#Samsung Galaxy Note 10 Vs Huawei Mate 20 Lite

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Samsung Galaxy Note 10 Lite Release Date, Price, Specification Samsung Galaxy Note 10 Lite Release Date, Price, Specification - History has been made, we had the return of the Galaxy Note new model.

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Smartphone Storage Review

For several years, smartphones have been steadily leading in popularity in the consumer electronics segment. Enormous competition encourages companies to constantly expand the functionality of their models. For example, companies already offer Projector Mobile Phones with a projector function, including the very popular Blackview MAX 1 Projector Mobile Phone.

But to a greater extent, the choice of optimal phonedepends on its price, brand and specs, including OS, smartphone performance, camera, screen, etc. Of course, smartphone storage is one of the main characteristics, affecting its performance.

Smartphone Storage

Any technical discourse is often accompanied by a free interpretation of concepts and terms that cause confusion. Smartphone Storage is no exception. But a simplified classification will help to eliminate this factor. Functionally, it includes ROM, RAM, internal memory, and external memory cards. By analogy with a PC, ROM corresponds to the C drive with OS on the HDD or SSD, and internal memory corresponds to the user partitions. Of course, non-volatile ROM (Read Only Memory) stores data even in the event of a power failure. ROM has high speed, provides the same access time to all cells and is used for OS. The ROM in smartphones uses dedicated partitions in the internal memory (eMMC or UFS) in read-only mode (via software). Respectively, this system partition is protected from accidentally deleted or edited. The volatile RAM (Random Access Memory) does not save information after shutdown. Typically, RAM stores only temporary information, for example, operating system or open apps, that are loaded into memory at startup. Its volume directly affects multitasking and device performance. The internal flesh memory of the phones is slower compared to RAM and ROM, but much faster than the external memory on the SD card. Therefore, many companies, including the iPhone, install a fairly capacious internal memory from 16 to 128 GB. MicroSD card provides an extension of the physical capacity of the internal memory. Basically, it provides storage for user data, including, videos, music, documents and app data. Articles often contain data on memory capacity without specification. Strictly speaking, this is incorrect, because Android system partitions reside in the same eMMC or UFS chip as the internal memory. Thus, the amount of memory available for rewriting is approximately 2 GB less than that specified in the specs.

Flash storage

ROM of modern smartphones use eMMC or UFS storage. Until recently, eMMC (embedded MultiMediaController) practically had no competitors in the segment of mobile devices. The latest eMMC 5.1 version was released in 2015, providing a reading speed of 250 MB/s and writing - 125 MB/s.

In 2016, Samsung first introduced UFS (Universal Flash Storage) memory based on the new operation principle that provides significantly faster read / write speeds. In particular, eMMC uses sequential organization of read / write processes (Half Duplex), while UFS implements them simultaneously (Full Duplex).

As a result, UFS is significantly faster and consumes less power. Today eMMC 5.1 is the most common for budget devices and mid-range smartphones. Accordingly, UFS is used for flagship devices. Their comparison among themselves demonstrates the huge advantage of UFS memory. For example, sequential read / write for UFS 2.1 reaches 750/143 MB/s vs 282/98 MB/s for eMMC 5.1. Moreover, Samsung Galaxy Fold, Note 10, as well as Chinese OnePlus 7 and 7 Pro, already use UFS 3, which works three times faster even compared to UFS 2.1.

As a rule, the specifications of models with UFS contain information about the memory type, which in this case is an indirect advertisement.

RAM

Gradually, companies expand the RAM of budget models from 2 GB to 3-4 GB, increasing their productivity for web surfing. The middle segment still uses 4-6 GB. RAM of some flagship models already reaches 12 GB. As before, companies use LPDDR (mDDR or Low Power DDR) memory. Their list includes: - LPDDR3 - in the budget segment; - LPDDR4 and 4X - middle and expensive models; - LPDDR 4X at maximum frequencies of 2133 MHz - flagship models. Samsung promises to introduce a faster LPDDR5 in 2020.

According to the company, its energy consumption will be reduced by 20%. Today, Samsung produces UFS moduls for their smartphones and also sells them to other companies, including LG, Huawei and HTC. Apple uses memory from different manufacturers. For example, iPhone 7 and 5S use memory modules from South Korean SK Hynix, iPhone 6S from Toshiba, iPhone 6 from SanDisk. Toshiba also supplies memory for Xiaomi and Meizu.

Conclusion

Today companies often combine different types of memory for smartphones because of cooperation with several suppliers at once. For example, Huawei P10 and P10 Plus can come with LPDDR4 and eMMC 5.1, LPDDR 3 and UFS 2.0, or with LPDDR 3 and eMMC 5.1. Of course, the company claims that their speed is identical. But the speed of UFS 2.1 and eMMC 5.1 are significantly different. In principle, this situation is typical for the smartphone segment. For example, Samsung in its flagship models uses Exynos chips or Qualcomm chips, and the iPhone 7 may have an Intel or Qualcomm modem. Of course, the memory type significantly affects its speed. But, on the other hand, these differences affect only downloading heavy games, for example, World of Tanks Blitz, or transferring large amounts of data to a PC. Therefore, expediency substantially depends on the price. As a result, many companies are in no hurry to install ultrafast memory on their models. For example, the flagship Xiaomi Redmi Note 7 Pro, Samsung Galaxy A70, Blackview BV9700 PRO, LG G8 ThinQ, and Huawei Mate 20 Lite still use eMMC 5.1. At the same time, the mid-budget LG G7 Fit, Xiaomi Redmi K20 Pro and Sony Xperia XZ2 Compact already use UFS 2.1. But, of course, at an equal price, models with UFS are preferable to smartphones with eMMC 5.1. This video offers a comparison of UFS 2.1 vs 2.0 vs EMMC 5.1. Read the full article

[mydigitalnepal]

Xiaomi Mi 9

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Xiaomi Mi 9 Price in Nepal, Full Features, Specifications, and Comparison

Xiaomi MI 9 is not only a flagship phone but also inexpensive which makes it challenging for Samsung Galaxy S10 and Huawei mate 20 pros. At first glance, the curved back look and a holographic layer of the phone gives an absolutely wow feeling. The Mi 9 possesses a second-generation in-display fingerprint sensor. Mi 9’s 3300 mAh battery capacity is definitely on the lower side, but the latest Snapdragon 7nm chip offers outstanding power efficiency. The Mi 9 comes with a 27W fast charger, which can fully charge the phone in little over an hour. The phone also supports super-fast wireless charging up to 20W, which is usually seen in wired fast chargers. Here we are going to list out Xiaomi Mi 9 Price in Nepal, features, and Specifications. So, let's get into it. Design and Display Overview The phone features a 6.39-inch FHD+ AMOLED display. It has a bit dated waterdrop notch. However, It has three variant of which the black variant of the phone which is the least impressive, as the blue and purple variants has a holographic layer to disperse light. The front of the Mi 9 is shaped with the recent Corning Gorilla Glass 6, while the entire back is curved. The curves are so gentle and edged that we have to be careful as it can slide out easily. Software and performance Xiaomi Mi 9 has a flagship  Qualcomm Snapdragon 855 chipset with Octa-Core processor (2.84 GHz, Single core, Kryo 485 + 2.42 GHz, Tri-core, Kryo 485 + 1.8 GHz, Quad core, Kryo 485). It uses Adreno 640 as graphics. The performance of the phone is ineffable. This phone gives a great performance in spite of heavy gameplay and intense multitasking. It comes with MIUI10 android 9 Pie.  Xiaomi Mi 9 has a base variant with RAM 6GB and internal storage 128 GB. It also comes with a top variant of 10 GB and internal storage 512 GB. Furthermore, it has an exclusive edition which comes with transparent back and has 12 GB RAM and 512 GB internal storage. Camera Sensor(Rear and front) I was curious and optimistic about Xiaomi Mi 9 camera since it had an impressive camera on Mi 8. So the predecessor of Mi 8, new Xiaomi Mi 9 has a triple rear camera setup which includes 48-megapixel  primary sensor, 16-megapixel  secondary sensor and a  12-megapixel tertiary sensor. The primary sensor of Xiaomi Mi 9 comes in relevant with Sony IMX 586 which is not a fake 48-megapixel sensor thanks to pixel binding technology. The secondary sensor has a telephoto lens which is zoom lens can be used for wide angle shot or macro shot. The rear camera gives unbelievable detailing that you can even capture details of pollen grains of flowers. There's sapphire glass protection for no scratches on the camera lens which is another plus point. The Xiaomi Mi 9 has a 20-megapixel camera sensor on the selfish section with AI beauty, bigger pixel, and aperture. Battery and Charger. It has a battery capacity of 3300 mAh with outstanding efficiency because of new Snapdragon 7nm chip. Mi 9 comes with a 27W fast charger, which can fully charge the phone in little over an hour. The phone also supports super-fast wireless charging up to 20W, which is the record-breaking limit. Xiaomi Mi 9 Other Specifications Xiaomi Mi 9 has other Specifications like special multifunctional NFS and IR blaster which is great for users who wishes these functions. It has a dedicated Google Assistant bottom. However, the Xiaomi Mi 9 doesn't give headphone jack and it has no micro SD card slot. Xiaomi Mi 9 price in Nepal This is huge from Xiaomi Mi phone. We have seen some very good smartphones from Xiaomi in mid and low range. So, with lots of features, it makes a sense to be curious about what is going to be Xiaomi Mi 9 price in Nepal? This flagship level phone Xiaomi Mi 9 price In Nepal is going to be around 52,000 rupees which hence is going to be a revolutionary on more features less price phone in Nepal that will challenge one plus 6 and much more high range and expensive phones like Samsung S10 and Hawaii mate 20 pros. Talking about its availability, the phone has just launched in China on the 20th of February. And, its global availability will be around June/July. So, it might just take some further time to arrive in Nepal. Wrapping up With its unbeatable value for money, a flagship standard Xiaomi Redmi Mi 9 is worth waiting. So, this was the full review of Xiaomi Mi 9 with its full specification, features, price in Nepal and its availability. But what do you think about it, tell us in the comment section below? Rate this phone and write your personal reviews from the review section above. Thank you for visiting "MY DIGITAL NEPAL". Let’s make a digital Nepal. Also Read: Why Xiaomi Shouldn't bring Mi Play to Nepal? Xiaomi Redmi Note 7 Price in Nepal Price of Xiaomi Redmi Note 7 pro in Nepal Comparison between Samsung Galaxy M-Series Huawei P30 vs Huawei P30 pro in Nepal Samsung Galaxy S10 vs S10 Lite Read the full article

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2018-03-23 09 ANDROID now

ANDROID

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[salkamine]

Liked on YouTube: شاومي وفيفو في السوق المغربي Xiaomi & Vivo

شاومي وفيفو في السوق المغربي Xiaomi & Vivo رسميا دخول شركتين صينيتين للسوق المغربي Xiaomi & Vivo *Instagram : http://bit.ly/2GiSnDt Xiaomi Morocco : http://bit.ly/2GAlq3f Vivo morocco instagram:https://bit.ly/2KpmOJU ►Subscribe (🔔) لا تنسى الاشتراك في القناة و تشغيل التنبيهات http://bit.ly/2ObeCum ►Help support the channel when shopping on Gearbest : ادعم القناة عند الشراء من جيربست http://bit.ly/2AxjBRr ►Help support the channel when shopping on jumia : ادعم القناة عند الشراء من جوميا http://bit.ly/2LOfipb Follow me on: تابعني على *Facebook : http://bit.ly/2GDnhV9 *Instagram : http://bit.ly/2IQgXLu *Twitter : https://twitter.com/Allokamal * site WEB : http://bit.ly/2GAQXCe For buisness inquiries contact me at للإعلان والتعاون kimokhaidoum@gmail.com يـتضمن هذا الفيديو مــقطع موسيقي مـصدره : Tobu - Candyland [NCS Release] Music promoted by Vlog No Copyright Music. Video Link: https://bit.ly/1A9dGxv xiaomi morocco xiaomi maroc vivo maroc vivo morocco Samsung maroc oppo maroc galaxy M30 Maroc galaxy A30 Maroc galaxy A10 MAROC GALAXY A 80 Galaxy M20 maroc Galaxy M10 maroc Galaxy M Xiaomi Redmi note 7 Redmi Note 7 ريدمي نوت 7 150 دولار Huawei Y7 2019 Huawei Y6 2019 Huawei P smart 2019 Honor V20 مراجعة هاتف Huawei Nova 4 هاتف Lenovo Z5s Xiaomi Mi Play Galaxy A8s هاتف Galaxy A8s مراجعة كاملة لهاتف Realme U1 Realme U1 Realme 3 OPPO Realme U1 Honor 10 Lite | بمواصفات ممتازة أونور 10 لايت Honor 10 Lite مراجعة هاتف OPPO A7 OPPO Realme 2 pro Xiaomi Mi Mix 3 Infinix hot 6x Realme 2 oppo k1 Huawei Mate 20 Huawei Mate 20 pro Huawei Mate 20 lite Huawei Mate 20X Galaxy A9 Galaxy A7 2018 أحلى ٧ كاميرات | Samsung Galaxy A7 & A9 فتح صندوق هواوي Y9 2019 الجديد Huawei Y9 2019 هواوي واي 9 2019 Honor 8X Xiaomi redmi note 6 IPhone Xs Max IPhone Xs IPhone Xr Honor 8x Huawei Mate 20 Lite مراجعة هاتف Huawei Mate 20 lite Xiaomi Pocophone F1 Xiaomi Poco F1 OPPO F9 honor play OPPO F7 Huawei Nova 3i infinix S3X Nova 3i infinix note 5 Xiaomi Mi Max 3 Xiaomi Mi A2 Xiaomi Mi A2 lite Galaxy Note 9 infinix Smart 2 Pro infinix note 5 OPPO find x OPPO F7 OPPO Samsung Apple iPhone X iPhone SE2 iPhone 2018 one plus 6 Infinix hot 6 Pro Xiaomi Redmi S2 Huawei Y5 prime 2018 Xiaomi Redmi Note 5 Xiaomi Redmi 6 Xiaomi Redmi 5 OPPO find x Vivo Nex Vivo Apex iOS 12 Huawei Y5 prime 2018 honor 7C honor play honor 7A honor 10 Huawei Y7 prime 2018 Huawei Y5 2018 OPPO F7 vs Huawei P20 lite OPPO F7 Y6 2018 Galaxy A6 plus Galaxy A6 2018 Galaxy J6 2018 Galaxy J8 2018 Vivo maroc vivo morocco xiaomi morocco xiaomi in maroc ►Subscribe (🔔) لا تنسى الاشتراك في القناة و تشغيل التنبيهات http://bit.ly/2ObeCum ►Help support the channel when shopping on Gearbest : ادعم القناة عند الشراء من جيربست http://bit.ly/2AxjBRr ►Help support the channel when shopping on jumia : ادعم القناة عند الشراء من جوميا http://bit.ly/2LOfipb Follow me on: تابعني على *Facebook : http://bit.ly/2GDnhV9 *Instagram : http://bit.ly/2IQgXLu *Twitter : https://twitter.com/Allokamal * site WEB : http://bit.ly/2GAQXCe For buisness inquiries contact me at للإعلان والتعاون kimokhaidoum@gmail.com via YouTube https://youtu.be/nkU3deNee2A Liked on YouTube: شاومي وفيفو في السوق المغربي Xiaomi & Vivo IFTTT, YouTube via 1better http://bit.ly/2Pnyeg4

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Huawei P20 Pro Review After 10 Months - Still Worth it in 2019?

https://www.quanrel.com/huawei-p20-pro-review-after-10-months-still-worth-it-in-2019/ Huawei P20 Pro Review After 10 Months - Still Worth it in 2019? - https://www.quanrel.com/huawei-p20-pro-review-after-10-months-still-worth-it-in-2019/ Huawei P20 Pro Review After 10 Months – Still Worth it in 2019? Download iSkysoft Toolbox to transfer Whatsapp from iPhone to iPhone/Android selectively. Download: Huawei P20 Pro detailed review: Mate 20 Pro review: GET the P20 Pro here: Get Huawei P20 Pro (International): ———————————————————————————————– 100% RELIABLE websites to buy tech from China: Gearbest: Banggood: ———————————————————————————————– CAMERA GEAR used to make this video: ESSENTIALS: 1. Main Camera: Lens: 2. Secondary camera: Lens: You need this adapter to use this lens: Another lens I use: ALL OF MY CAMERA GEAR: ———————————————————————————————– Official email: techlinehd@gmail.com ———————————————————————————————– Join TechLineHD Deals and Discounts Facebook Group: ———————————————————————————————– Support my channel by shopping on Amazon using my link: ———————————————————————————————– BEST VALUE SMARTPHONES 2018: 1. Xiaomi Redmi Note 5: 2. Xiaomi Mi A2: 3. Xiaomi Redmi 5 Plus: 4. Meizu Pro 6 Plus: 5. Nubia Z17 Lite: 6. Nubia M2: ———————————————————————————————– Check out these videos: 1. Xiaomi Redmi Note 5 Review – AMAZING $200 Smartphone!: 2. Meizu Pro 6 Plus Review – Insane Value Smartphone 2018!: 3. Asus Zenfone 5 Review – A Premium Midrange Flagship!: 4. Nubia Z17 Lite Review – AMAZING $170 Smartphone!: ———————————————————————————————– Follow me on social networks: Twitter: @TechlineHD Instagram: techlinehd Facebook: www.facebook.com/TechlineHD ———————————————————————————————– -~-~~-~~~-~~-~- Please watch: “Samsung Galaxy S10+ Review – Almost Perfect Smartphone 2019!” -~-~~-~~~-~~-~- Check Price & Availability Huawei P20 Pro Review,Huawei P20 Pro,huawei p20 pro camera,Huawei P20 Pro long term review,Huawei P20 Pro 2019,Huawei P20 Pro review in 2019,p20 pro review,huawei phones 2019,huawei p20 pro battery life,should I buy huawei p20 pro in 2019,huawei p20 pro vs mate 20 pro,huawei p20 pro camera test,top 10 huawei phones 2019,top 5 huawei phones 2019,all huawei phones 2019,p20 pro review 2019

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Key features of Huawei and Honor phones Review

As known, Huawei Technologies Co. Ltd. was founded in 1987 by a former engineer of the People's Liberation Army of China. Today, its share reaches 13% of global smartphone sales, second only to Samsung (19%). For example, in 2018, its revenue reached $ 107 billion, providing a profit of about $ 8.8 billion. A significant share of the company's products is sold under the Honor brand, which also belongs to Huawei. In fact, the Honor brand can be positioned as a separate series of devices with its own name. Initially, Huawei created it for the mid-budget segment of smartphones, laptops, etc, oriented primarily to the younger generation. But the strategy of selling Honor models via the Internet, including its own websites and third-party online stores, allowed the company to further reduce prices. As a result, its popularity has increased dramatically. Today, there is even a Honor Club that provides additional discounts to its members. As a consequence, some perceive Honor as a separate company. But in fact, Honor is just a very successful Huawei series.

Sanctions

Of course, the confrontation with the US government has made significant adjustments to the rapid development of the company. As known, spring 2019, U.S. President Donald Trump introduced an emergency regime to protect the country's communication networks, blacklisting Huawei. Of course, this decision significantly complicated the sale of Huawei products in America. Additionally, from May 20, 2019, Google stopped working with Huawei, limiting its access to Android services. Then, on May 22, the British ARM company broke off cooperation with Huawei, despite losses due to the production of Kirin chipsets. Then, on May 22, the British ARM company broke off cooperation with Huawei, despite the loss due to Kirin chipsets. But in July, during the G20 summit, U.S. President Donald Trump unexpectedly made a statement about the possible lifting of some bans on cooperation between US companies and Huawei. Nevertheless, even at the end of 2019, the prospects for the further development of this situation remain very uncertain. On the one hand, the US Congress allocated $ 1 billion to small telecommunications operators to replace Huawei and ZTE equipment. In addition, Google, Intel and Panasonic completely suspended their cooperation with Huawei. But the US Department of Commerce licensed Microsoft to sell the software to this Chinese company. Of course, any trade war sooner or later ends with a reasonable compromise agreement. Probably, this conflict will also be resolved in the near future without fatal consequences for the parties. However, throughout the second half of 2019, the Chinese giant was intensively preparing for possible complications. In particular, Huawei unexpectedly introduced its own Harmony OS (HongMengOS or OakOS), which can become a competitor to Android OS, and several great HiSilicon Kirin chipsets, including Kirin 810, 990 and 990 5G, whose specs are quite comparable with Qualcomm Snapdragon 855.

Key Features

Probably, a modern phone can be considered one of the most technically sophisticated devices. In fact, today it combines the functions of a phone, a pocket PC, a high-quality camera and a multimedia center. For example, some companies have been offering Projector Mobile Phones with a projector function, including the very popular Blackview MAX 1 Projector Mobile Phone. As a consequence, the modern smartphone uses complex components, including OS, chipset, Smartphone Storage, camera, display, etc. Their specs directly affect the functionality and quality of the model and, accordingly, smartphone choice. At IFA 2019, the company introduced EMUI 10 (Emotion UI) for Android 10. But further escalation of the conflict could accelerate the full implementation of Harmony OS instead of Android. Todey the company sees Harmony OS as “Plan B," planning to use the new OS only in the Chinese market. In addition, Huawei equips the phones with its own HiSilicon Kirin chipsets, which today quite successfully compete even with Qualcomm Snapdragon.

Camera and display

In recent years, the company places the Leica logo next to the cameras of its flagships, advertising its cooperation with the famous German manufacturer. Of course, Leica does not produce cameras for Huawei. Formally, their cooperation includes the experience exchange in the development of optics and software, including the optical transmission, color rendering, detailing, image post-processing with AI methods, etc. But in fact, Leica strictly controls and, if necessary, helps to create high-quality cameras in exchange for the right to use their logo. As a result, almost all experts note a sharp increase in the quality of cameras in Huawei models. As known, Huawei uses in their phones AMOLED and IPS matrices from various companies, including Foxconn, Tianma, LG, etc. For example, the very expensive Porsche Design Huawei Mate RS (2018) uses a gorgeous 6.0-inch LG OLED screen with 2880 x 1440 (Quad HD +) resolution, 538 ppi pixel density and 90,000: 1 contrast.

The lineup

Huawei uses a fairly popular strategy, annually offering a huge number of models in different price segments. A few years ago, Samsung and LG used a similar tactic. For example, in 2014 Samsung introduced 56 new models, and LG - 41 new smartphones. But other companies, including Apple or Google, prefer a small assortment of new models. Of course, a huge range allows the company to actively experiment with components in search of the optimal configuration. For example, many Best Sellers have only average specs, but a good price / quality ratio due to the successful configuration has ensured them marketing success. But the cost of any product consists of the costs of development and design, production, logistics, advertising, etc. Further support also requires additional costs for updating the OS, production of components for repair, etc. As a result, a large number of models almost always reduce profits due to rising costs. Therefore, in recent years, many leaders are reducing their range. But Huawei does not change its tactics. Apparently, financial power allows the Chinese giant to ignore this aspect. As a result, today the market simultaneously offers dozens of Huawei models with almost the same specs and price. Of course, this factor expands the range, but often complicates the phone choice. In fairness, the company does not very strictly follow the traditional division of its products into price segments. In 2019 company introduced several very interesting innovative phones, including the Nova 5, 5i and 5 Pro, P30 Lite, P30 and P30 Pro, Mate X and Mate 30 Pro, Honor 10i, 20, 20 Pro and View 20.

Conclusion

Traditionally, Huawei's list of pros includes flexible pricing policy and a huge assortment. But in recent years, the Chinese giant has made several breakthroughs. Firstly, in collaboration with the famous German Leica Camera AG, the company radically improved the quality of the cameras of its smartphones, taking a leading position in the segment of camera phones. Second, the company has radically improved its HiSilicon Kirin chipsets, which today successfully compete even with the latest Qualcomm Snapdragon 855 Plus. Thirdly, the company introduced new Harmony OS, which many experts consider very promising. Moreover, Honor and Huawei smartphones took the first two places in the research of Harris Interactive. This company analyzed 130,050 cases of after-sales appeals of customers of a large European Darty retail network. To the surprise of many, Chinese models were recognized as the most reliable. iPhone took only third place. Perhaps the Chinese manufacturer for the first time ahead of traditional leaders in this indicator. The combination of these factors allows the Chinese company to be optimistic about the future, despite their problems with sanctions. This video offers Samsung Galaxy A70 vs Honor View 20 SpeedTest. Read the full article

[appliancesreviews]

AMOLED vs LCD displays in phones

A modern smartphone uses a large number of complex components, including main camera and several additional cameras in multi-camera smartphones, chipset, RAM and ROM, operation system, etc. Their specs directly affect the functionality and, as a result, the choice of the optimal model. But of course, the display is one of the main components. Its specs, service life and safety for vision depend on the matrix type. All modern TVs and smartphones use AMOLED (Active Matrix Organic Light-Emitting Diode) or LCD screens. As known, before the invention of OLED technology, LED LCD displays dominated the market. The first light-emitting p-phenylene vinylene (or PPV, or polyphenylene vinylene) polymer was synthesized in the Cavendish Laboratory of the University of Cambridge in 1989. Already in 1992, Cambridge Display Technolodgy (CDT) was established to produce polymer light-emitting materials. But the fierce competition between them began only in the 21st century, provoking their rapid development.

LCD

As known, LCD (Liquid Crystal Display) technology uses fluidity and anisotropy of crystals. In fact, they perform the function of a light filter, forming a pixel of the desired color on the screen surface. Of course, this technology requires a backlight that uses LEDs. In February 2011, Samsung introduced the first QLED display with improved LED backlighting on quantum dots. In fact, engineers added an LED panel instead of traditional cold cathode fluorescent tubes. This technology has significantly expanded the color gamut of the matrix. Further, other companies developed their own technologies based on this idea. Today they use their own marketing names, including NanoCell from LG, Triluminos from Sony and ULED from Hisense. In parallel, companies developed backlight technology. As a result, FALD (full-array local dimming) backlighting was developed. Today, experts expect LCD with innovative miniLED-based backlighting. Unlike traditional backlighting, the size of its diode modules does not exceed 100 microns. The reduction in size promises to drastically reduce energy consumption, increase contrast and color accuracy by increasing the number of local dimming zones. TVs already use this technology. For example, TCL announced 8-series MiniLED Roku TV with 1,000 local dimming zones. In comparison, today the best expensive LCD TVs use no more than a few hundred. This technology promises to bring the quality of LCD screens closer to AMOLED. Some experts were expecting these smartphones in 2019. Unfortunately, their hopes did not materialize.

OLED

OLED matrices (Organic light-emitting diode) use multilayer organic polymers that emit light under the influence of electricity and do not require backlighting. In fact, it's the main difference between these technologies. All modern phones use only AMOLED (Active Matrix OLED) matrices with Active Matrix. But in the TV segment, companies continue to use the acronym OLED without adding AM. In the summer of 2009, LG announced the first 15-inch OLED TV. A few years later, at CES 2012, Samsung and LG introduced 55-inch OLED TVs. At IFA 2013, LG has already announced the world's first 77-inch 4K OLED TV. At CES 2013, Samsung announced the Galaxy S4 with 5 "Super AMOLED Full HD panel. In the second half of 2014, Samsung Display began production of AMOLED flexible panels. Modern models already use AMOLED, Super AMOLED, HD Super AMOLED, Dynamic AMOLED and P-OLED matrices.

MicroLED (mLED or μLED or ILED)

MicroLED is the next step in the development of OLED technology. Like OLED, MicroLED uses subpixel LEDs with its own radiation and does not require backlighting. But as a light-emitting material, OLED uses sm-OLED (Small Molecule-Organic LED), POLED, or PHOLED (phosphorescent OLED). MicroLED uses inorganic GaN (gallium nitride) with a size of only 5-10 microns, which is its main advantage. The new technology has great prospects. In particular, high light output can drastically reduce energy consumption to about 10% LCD and 50% OLED displays, and the miniature size will allow companies to achieve pixel densities of up to 1,500 PPI, providing huge resolution even for large matrices. In 2018, Apple announced plans to produce MicroLED panels. But in 2019, serial microLED displays did not appear on the market. However, Sony and Samsung are already selling microLED The Wall.

OLED advantages

1. As known, contrast characterizes the ratio brightest white to the darkest black pixels on the screen and is measured in the ratio of "maximum brightness" / 1. Thus, a screen with a contrast ratio of 1000: 1 displays white 1000 times brighter than black. But in the OLED display, black color corresponds to a completely off diode with a brightness of "0". Therefore, companies often use the term "Infinite contrast", although, as you know, mathematics prohibits the division by "0". Sometimes companies indicate 2,000,000: 1 and above, which is probably more correct. Unfortunately, LED backlight in the LCD screen fundamentally eliminates the perfect black. 2. Smartphones with OLED screens support Always On-Display mode. In this case, the smartphone’s display can display information by controlling individual pixels. This mode provides a significant reduction in energy consumption when choosing interface in dark colors. But black color of the IPS matrix corresponds to the on backlight, which we do not see due to the light wave damping by the second polarizer. Thus, the IPS matrix cannot provide this useful option because its backlight constantly illuminates the matrix. 3. As known, the image brightness decreases when viewed at an angle. For example, the brightness drop in smartphones with IPS-screen reaches 55% for an angle of 30 degrees. For comparison, brightness reduction of the OLED screen at the same angle does not exceed 25%. 4. The absence of a backlight in OLED screen eliminates problems with its uniformity. Unfortunately, it's relevant for the IPS screen. Typically, companies place backlight diodes along the bottom edge of the IPS screen. During operation, their light passes through a special flexible diffuser made of a thin film. Unfortunately, many LCD screens display a brighter bar at the bottom of the screen near the diodes.

LCD advantages

1. IPS-screen is much cheaper than OLED-analogue, including repair. 2. Almost all OLED screens have problems with Screen burn-in. The service life of green diodes reaches 130,000 hours, red - 50,000 hours, blue - only 15,000 hours. However, today companies successfully solve this problem using PenTile. For example, PenTile technology allowed Samsung to use half as many blue and red subpixels compared to green. Moreover, the most powerful blue diodes operate at half power, saving a resource. It increases their service life, and all subpixels burn out evenly. Typically, companies use RGBG (additional green sub-pixel) or RGBW (additional white sub-pixel). Today AMOLED, Super AMOLED and HD Super AMOLED often use this configuration. On the other hand, 15,000 hours of service life for blue diodes corresponds to more than 5 years of operation, even with heavy use. Most people change models more often. In addition, static displaying for a long time at maximum brightness may form a residual image on the screen. But Pixel Shifting and Parallax Backgrounds successfully solve this problem. Pixel Shifting software algorithm shifts the image by 1 pixel for a prolonged static image. Recently, Google and Apple often use parallax backgrounds, preventing a static image on the screen. 3. Screen flicker due to PWM in OLED screen increases eye strain. As known, the diode brightness depends on the current strength. With its increase, it gradually rises. Unfortunately, the decrease in brightness does not occur smoothly. Instead of smooth dimming, the diodes begin to work with small pauses. For example, diodes burn 0.9 ms for 1 second at 100% brightness. But at 50% brightness, these LEDs only work for 0.45 ms for 1 second. Of course, this flicker significantly increases the load on the eyesight, causing discomfort in the eyes.

Brands

Today, budget and mid-budget Android, and Apple, mainly use LCD displays. This list includes: - iPhone 11; - iPhone XR; - Honor 20/20 Pro; - iPhone 8/8 Plus, iPhone 7/7 Plus; - Xiaomi Redmi Note 7; - Huawei P30 Lite. AMOLED screens are used on almost all flagships and even on mid-range smartphones. This list includes: - the entire line of Samsung Galaxy S-series, Note-series, etc; - iPhone 11 Pro / 11 Pro Max, iPhone XS / XS Max and iPhone X; - Huawei flagships (P30, Mate 30); - Xiaomi flagships (the entire line of Mi 9, etc.); - Sony Xperia XZ3 and Xperia 1.

Conclusion

In general, the trend clearly demonstrates the rapid convergence of technology. The active use of effective innovative technologies has ensured the convergence of consumer qualities of models with AMOLED and LCD matrices. Of course, AMOLED retains a slight advantage in image quality, but LCD successfully compensates for it due to price. Today we can assume the direction of their further improvement. Apparently, the market will soon offer LCD screens with miniLED-based backlighting. In the segment of OLED technology, MicroLED displays have good prospects over time to replace modern AMOLED screens. In this case, LCD with miniLED will compete with MicroLED in the next step. This video shows the 75-inch and 219-inch Samsung Micro LED Modular TVs at CES 2019. Read the full article