The changes that affected OS Nougat (translated into Russian) were reported back in May last year. At the Google I / O Developers Conference. Then her release was scheduled for the fall. And now, in January 2017, Samsung provides a list of its devices that will be equipped with Nougat.

In the press release of the Korean flagship, it is reported that the new operating system will receive the Galaxy S6, Plus, Edge. Also, the new OS will serve the A-line gadgets (including Galaxy A3, A8), phablets Galaxy Note 5.

Updates and tablets will be affected. Nougat will be refreshed Galaxy Tab A, styluses Tab S2, S Pen. Will receive an LTE update that is not tied to an operator. Samsung does not specify a specific timeline for the updates. But he clarifies that the Nougat mailing will take place in the first quarter of 2017.

Newsletter software Android 7.0 Samsung launched a few days ago. Advanced models Galaxy smartphones S7, edge are already getting a fresh OS. Ver.7.0 comes to these devices, not as relevant as 7.1.1, but with a security update from 01/01/2017.

The update has all the basic functionality of Nugat. Including services, Samsung-specific applications. They have a Performance Mode mode that allows you to increase the performance of the device in various scenarios of using the gadget. There is a Multi Window system that can open up to 5 "windows". And Samsung Pass allows you to log into web resources using a single master password.

What is so attractive about Android 7.0 (Nougat)? The main innovations, and there are three of them, are quite practical and necessary for users of the above gadgets.

First of all, the OS performance was optimized. Now there is a possibility of better elaboration and rendering of complicated graphics in 3D. The direct path of applications to the graphics chip reduces the load on the CPU. JIT Compiler "flyby" increases productivity when installing applications, reduces the size of the distribution.

Material on the topic:

The second innovation is a simplified menu. It has significantly increased the productivity of devices. There is a limit to seven recently used programs. There is a Clear All button allowing automatic mode close active applications.

Third new feature Nougat - preparation for work with hardware that provides virtual reality. Subsequent operating systems will be made with Daydream VR platform, Android VR Mode. This will optimize the operation of applications in the clauses of the artificial computing environment.

Android 7.0 Nougat Device Update Review Sony Xperia can be easily summarized in one sentence:

Timely, efficiently and without unnecessary noise.

This is the first major Android update that Sony Mobile developers managed to roll out quickly and without visible problems... Considering that only 3 months have passed since the official release of Android 7.0 Nougat, it's time to start praising Sony.

And all why? But because Sony Mobile engineers started working with the preliminary version of Android N in advance, made an open beta test (you can read it) and generally showed all sorts of quickness.

But I will not delay - I will immediately move on to specific innovations and changes in the new android, and at the end I will tell you my purely personal impressions.

Android 7.0 Nougat review was made based on firmware for Sony Xperia X Dual (F5122).

Android 7.0 Nougat innovations and Xperia Home changes

There are not so many changes visible to the eye in the Xperia Home shell on Android 7.0 Nougat, but they are:

New notification menu. Very similar to what can be seen in naked Nougat on Google Nexus devices. The switches now work differently - in the half-open form, these are on / off buttons, and in the open position, the buttons turn into mini-applications, when you click on them, the context appears. You can reply to messages without going into the application itself. The notifications were divided into groups, for example, instant messengers.


Google Now on the desktop on the right. Everything is clear here, the curtain of the Google Now aggregator is implemented in the same way as in Nexus smartphones.


Redesigned lock screen notifications. The appearance of notifications compared to Android 6.0 Marshmallow has become even more minimalistic, in general, it coincides with the stock Android 7.0 Nougat.

Multi-window mode. This mode works with most applications.

New menu of installed applications. Slightly altered appearance application menu.


Switch between applications by double tap on the multitasking button. One of the most useful features added to Android 7.0 Nougat update. In fact, the analogue of ALT + TAB on Windows.

Advanced system scaling. Now you can change the scale of not just text, but the entire system as a whole, which makes the Android interface even more flexible. Hi iOS. It will be extremely useful on smartphones with a screen diagonal of 5.5 ″. The scale changes in the display settings.


Saving traffic for individual applications. In the Data Usage settings, it is now possible to set restrictions on cellular data transmission for individual applications. It will be convenient for amateurs to control everything.


What's under the hood? Technical innovations Android 7.0 Nougat for Sony Xperia

Now about the technical changes that appeared in Android Nougat... There are few of them, but they are all very important.

Ditching OpenGL in favor of the proprietary Vulkan API. The new developer environment will allow for better control on the hardware component of the device, which should lead to increased performance. If game developers are serious about using Vulkan, of course.


JIT application compiler. Apps on Xperia devices with Android 7.0 Nougat install noticeably faster and weigh nearly half the weight.

Android update Runtime. Improvements in this technology have increased system performance from 40% to 600% in various benchmarks. But how it will look in reality is not yet clear.

Android 7.0 Nougat introduces the ability to fully encrypt information. Google does not forget about the safety of its users. It seems that the myth of the "leaky" Android is finally becoming a thing of the past.

Android Instant Apps. An innovative feature that allows you to feel the app without completely installing it. The user will be able to quickly evaluate the application and decide whether he needs it on his phone or not. This feature is not yet available.

Updating Xperia stock apps to Android 7.0 Nougat

The Android 7.0 Nougat update on Sony Xperia has affected the following applications:

Camera with manual settings. Manual settings have been added to the Xperia camera application, which are available in Manual mode. To activate them, you need to click on the icon with sliders at the bottom of the shutter button. Let's consider the possibilities of manual camera control in more detail.


White balance (WB). You can choose from five options - Auto (where everything is at the mercy of camera algorithms), Incandescent lamp, Fluorescent lamp, Sunlight, Cloudy. Under normal circumstances, it is best to use Auto White Balance, but sometimes you can use these presets to create the atmosphere you want.


Exposure (EV). Everything is extremely simple here, move the scale up or down, if you need to get a lighter or darker picture. The range is +2.0 to -2.0.


Shutter speed (SS) ... Perhaps the most important parameter in manual settings Xperia cameras. You can set the shutter speed from 1/4000 sec. To 1 sec. For me personally, a maximum exposure of only 1 second is not enough for creative tasks. I would like at least 5 seconds, but preferably 10 at once.


Focus (AF / MF). This setting item allows you to set focus from macro to infinity.


New messages. The proprietary messaging app has undergone a major makeover since the Android 7.0 Nougat update. We have written down a lot of possibilities related to adding content to messages. You can take photos / videos directly in Messages and send them as MMS.


New Stamina and Doze. Sony Mobile has finally managed to implement the full Stamina mode that Xperia users saw on Android 5.1 Lollipop, and then lost it due to the limitations of Android 6.0 Marshmallow. Now in the Battery - Stamina settings there is an item Stamina Level, in which you can set the desired level of energy saving. Each mode has a concise description that gives an idea of ​​what will be limited and how.



New dialer... The standard Phone application looks like a stock dialer from Google Nexus.


Performance and runtime

The Xperia X has slightly improved performance after the update, but the difference with Android Marshmallow is not critical. Rather, it is a smoother UI animation than a real performance boost.


But the autonomy of the smartphone has increased more noticeably. On average, the operating time increased by 1-1.5 hours. In addition, battery consumption has become more predictable.

Impression

My impressions of the Android 7.0 Nougat update for Sony Xperia are unambiguous - it turned out great. Kudos to Sony Mobile developers.

The only real caveat is about the camera app. Still, Sony could have been more diligent in this matter.

More precisely, it was necessary to gather strength and cross out the legacy of past years by creating a new application, simple and convenient. For example, like the Huawei P9, in which the camera application is simplified to the limit, but all the necessary functionality is fully present.

Hopefully, in the spring, at MWC 2017, Sony will present flagships with cameras on really new software.

Otherwise, the Android 7.0 Nougat update for the Sony Xperia XZ, Xperia X Performance, Xperia X Compact and Xperia X is exemplary.


Sony Mobile has done a painstaking job of porting all the features that Google developers have implemented, including the symbiosis of Doze and Stamina, JIT compiler, dual-window mode, and much more.

Not every manufacturer knows how to so delicately introduce technologies of new versions of Android into the proprietary shell.

The same thing always happens: a new version operating room Android systems, but until the phone vibrates, showing a notification about the availability of an update, it takes many months.

The reason is simple: most manufacturers require certain time to agree on new functionality OS with user interfaces, adapt drivers and test the stability of the updated system. First of all, Samsung is not known for its rapid adoption of new versions of Android on its devices.

Android Update for Samsung Mobile Phones

The same is the case with updates to Android 7.0 or Android 7.1. Let's try to answer the question: what devices in general will receive the system update? Official statements on this matter have not yet been made, but we will try to estimate the chances from a few scraps of information from various sources.

You can be confident in the Android update for the Galaxy S7 Edge and S7

Typically, Samsung's distribution of new software starts with flagship devices. Therefore, in the case of Android 7, the Note 7 should have become such a device, about the update operating system for which it has even been officially announced. Now that the Note 7's sales and swaps have been canceled, you can be pretty sure that the update will receive and in the first place.

Nougat update for Galaxy S6 and Galaxy S6 Edge

It is still questionable whether the top models of 2015 will receive updates to Nougat - we are talking about, and. We assume that the update will happen anyway. The fact is that the manufacturer promised to provide updates to the operating system for at least 18 months after the start of sales of the device.

Thus, an update for 2016 models is still likely. In addition, the update will allow Samsung not to lose buyers of the previous generation models so quickly.

Android 7 for mid-range Samsung devices

What about less expensive models like and? At the beginning of the year, Samsung actually rolled out another update for previous version so we anticipate that there will be significant delays in the 2016 Android 7 updates for these devices. For mobile phones the "J" line, the update is also not unthinkable.

No more updates for the Galaxy S5

Chances are good that the Galaxy S5 will no longer receive updated versions of the operating system. As already mentioned, the manufacturer's position is to provide updates to devices at least 18 months after the start of sales - however, the Galaxy S5 has been on the market for much longer.

Android users quickly switch between running programs dozens of times a day. If you need to constantly switch between messengers, browser or music player, the fast switching mode is simply irreplaceable. With Android 7.0 Nougat, users can now switch between the 2 most recently launched programs. This feature is realized with lightning speed, with the help of a double tap on the icon with the multitasking icon.

Android 7.0 - fast switching between applications

Messages and notifications

  1. Improved notification system.

A key innovation in Android 7.0 is a multi-level notification system. While modifying the functionality of the platform, the developer does not want to sacrifice the convenience and comfort of users. Now you can set up work with each incoming message more flexibly, at your discretion.


Interacting with notifications made easy

For example, working with by e-mail it will become much easier and more convenient if all incoming letters are formed into one puzzle, performing actions on which the user will be able to spend less time thanks to a set of built-in instructions.

  1. Quick response.

This functionality has also been previously used by various manufacturers and companies, but has only now become available at the system level. Quick response allows you to quickly respond to your interlocutor by clicking on the "Replay" button, without expanding the main application to a very display.

  1. Flexible customization of notifications.

All alerts and notifications can now be easily configured directly in the "Notification Center". You can flexibly turn off unnecessary sounds, select the program priority for personal requests, or block intrusive notifications.

  1. Quick settings.

All settings are right in the palm of your hand. They are located right under the curtain, a set of 5 most necessary settings, whether it is the inclusion of Wi-Fi, Bluetooth, GPS, mobile data, etc. To see the rest of the settings, just pull the shutter with the settings down. A full list of available parameters will open, where, by analogy, you can add and change your settings by positions. It doesn't matter if it is any of the marked functions of the messenger, social networks etc., the main thing is that it brings comfortable control with your Android 7.0 device.

Doze function

Google engineers in the past Android version Marshmallow has introduced support for the special Doze function, which is responsible for the consumption and saving of battery power. Over the year, the development of this technology has been greatly expanded, adding even more optimization for the energy consumption of devices.

🗲 Now Doze works "round the clock", namely:

  • active mode of operation at night;
  • during inactivity of the device;
  • when the gadget is locked;
  • lying in a bag, jeans pocket and everywhere where the system recognizes device inactivity.

According to personal feelings, the margin of autonomy has increased slightly, although, according to journalists and experts from the mobile sector, the increase in productivity is very small.

Security features

To highlight the status of one of the safest mobile platforms, Android developers worked in several directions at once:

  • the process of installing new updates;
  • file encryption and protection;
  • autostart applications after restarting the system;
  • filtering incoming and outgoing traffic using secure protocols.
  1. Direct Boot.

This improvement allows you to significantly reduce the boot time of the system and at the same time receive only the most important and operative messages at the start. Messages, SMS, alarms and other system notifications will be displayed in priority on the device's screen, even before it is unlocked.

  1. The renewal process hidden from view.

Now, setting on your Android devices 7.0, users will not have to worry about checking and wasting time installing system updates every time. Previously, when the update process took place, the person could not use the device until the moment passed complete installation and pre-optimization of the tuning process.

  1. Data encryption.

The new "green robot" now supports a more advanced encryption system based on core support in file system... Special encryption of each file allows you to achieve a more reliable and secure user experience while working on one device.

Productivity increase

  1. New compiler

By introducing new algorithms and a system of process interaction into the work of the system, the developers managed to achieve noticeable indicators in terms of the speed of the platform and the response of the interface. The JIT compiler not only made it possible to speed up the process of working and launching applications processed in the kernel, but also made it possible to reduce the time for installing applications and updating.

  1. Vulkan API

A new step towards meeting developers. In addition to improved rendering and feedback processing through the video core of the device, developers got direct access to the video subsystem. This achievement significantly improves visuals and graphics, bringing more colorful visuals to game concepts.

Examples of how the new API works were demonstrated on the latest Need for Speed: No Limits game.

Other visual improvements in Android 7.0

  1. Now on Tap.

Trying to create its own virtual assistant, Google is actively using the best practices of machine learning. So last year's feature Now on Tap is actively developing and refining. Conducting analysis and data displayed on the screen of the gadget, the system automatically performs selections and available information.

With the update, the service received wider functionality in the form of reminders, calendar events, working with alarms, stopwatches and timers, routing and informing about the nearest establishments on the map and events. To do this, you do not need to perform unnecessary actions and clicks, the virtual assistant will do everything for you.

  1. Keyboard.

The updated system keyboard has got themes and more flexible settings and personalization features. You can choose one of the available 15 background colors, and, if you wish, also exhibit your photo. You can choose a dark theme that will help you at least a little, but still conserve your device's battery.

New emoticons and emoji have been redrawn and improved. 72 new funny picture elements have been added to the keyboard fields.


New emoji Android 7.0 Nougat
  1. Multitasking menu.

The multitasking menu has also been slightly cosmetic changes. It will display a very long list of applications, but the system itself will "freeze" old processes and limit the work to only the last 7 active programs. According to analysts from Google, such a step will significantly reduce the list of running applications and optimize the workflow. In order to close all applications, there is a special key "Clear All".

  1. Information labels in the settings menu.

The settings lines have now been supplemented with special informative data. Next to the "Wi-Fi" setting, you can see the name of the active network, in the "Memory" field - the amount of used memory, near the "Battery" field - the number of available percentages of the battery charge. This approach saves time, and once again simplifies the process of interacting with the device.

  1. Saving mobile traffic.

The convenient and informative Data Saver control utility allows you to flexibly configure the process of traffic consumption, while setting limits on monthly rates with the provision of detailed statistics and reports. The prohibition on the transfer of data in the background significantly helps to save the consumption of valuable megabytes of mobile traffic.

  1. Change of size system fonts.

Now Android has a function that changes the size and scale of elements and system fonts on the display of the gadget. Easy customization and ease of use allow you to set the size of the interface elements at your discretion so as to maximize the effective distribution of the usable space on the device display.

Video review Android 7.0 Nougat

Summing up the Android 7.0 Nougat review

Google has been actively working on the current update. The developers managed to create a really convenient and universal system for installation on mobile gadgets and tablets. The redesigned interface elements, along with new menu items and settings, have a positive impact on the overall comfort and interaction when working with the platform.

Here is the entire list of smartphones and tablets that will receive the update. and newer versions ( Android 7.1 and Android 7.1.1 including) mobile operating system Google over the next few months (until the end of the second quarter of 2017, depending on the manufacturer).

The companies themselves while reluctant to predict the release of updates... After all, the work of adapting the firmware is difficult, fraught with a deterioration in the stability of the mobile devices(problems and security issues), and developers do not directly benefit from this. The manufacturer's only motivation is to maintain the brand's prestige so that users do not worry about further support for new devices.

You can already and now, but only for a certain type of device.

[This article is current as of February 2017]

To date (early 2017), most modern smartphones and tablets still have approximate update times Android 7.0 Nougat and newer versions. But this will require a long wait (development, optimization, testing, and only then release). The owners of these models will sooner or later wait for finalization and, finally, will be able to download Android 7 to their devices.

Which Samsung devices will update to Android 7.0 Nougat?

Leading Android smartphone supplier South Korean IT giant plans to move to base Nougat version 7.1.1 a large number of smartphones during the first half of 2017. Moreover, in the UK and the Czech Republic, the owners have already received updates for Galaxy S7... Below is the official list Samsung for Android 7, and it will be replenished.

- Samsung Galaxy S6;
- Samsung Galaxy S6 Edge;
- Samsung Galaxy S6 Edge Plus;
- Samsung Galaxy S7;
- Samsung Galaxy S7 Edge;
- Samsung Galaxy S7 Active;
- Samsung Galaxy Note 7 (discontinued due to exploding battery);
- Samsung Galaxy Note 5;
- Samsung Galaxy Note 4;
- Samsung Galaxy S5;
- Samsung Galaxy A5 (2016);
- Samsung Galaxy A3 (2016);
- Samsung Galaxy J3.

Which LG devices will update to Android 7.0 Nougat?

Lg and Android 7- a rapidly growing alliance in the mobile market. UpdatesAccommodation Nougat should appear on smartphones before the summer of 2017. But the list of devices is small. It is noteworthy that the top model LG V20 is the world's first smartphone based on Android 7.0.

- LG G3 (summer 2017);
- LG G4 (summer 2017);
- LG G5 (already updated in the US);
- LG V10 (March 2017);
- LG V20(the world's first smartphone based on Nougat"from the box").

Which HTC devices will upgrade to Android 7.0 Nougat?

Approved devices Htc for Android 7 also make up a small list.

- HTC 10 (the unlocked version has already been updated, the rest will receive in the spring due to some problems and errors);
- Htc one A9 (before summer);
- HTC One M9 (already updated);
- HTC Bolt / Evo 10 (already updated).

Which Motorola devices will update to Android 7.0 Nougat?

Under the wing Lenovo product renewal prospects Motorola before Android 7.0 Nougat were implicit. But the Chinese company has reliably taken care of the transition to the new operating system of a large number of device models. Some of them have already received new firmware.

- Moto Z (updated);
- Moto Z Force (updated);
- Moto G4 (updated);
- Moto G4 Plus (updated);
- Moto G4 Play;
- Moto X3 Pure Edition;
- Moto X Style;
- Moto X Play;
- Moto X Force;
- Moto X Turbo 2;
- Moto X MAXX 2;
- Moto Z Droid;
- Moto Z Force Droid;
- Moto Z Play;
- Moto Z Play Droid;
- Moto M.

Which ZTE devices will update to Android 7.0 Nougat?

Some of these devices are not available for the international market. But somehow ZTE and Android 7.0 Nougat sooner or later "make friends" finally on the example of the following models.

- ZTE Axon 7;
- ZTE ZMax Pro;
- ZTE Axon Elite;
- ZTE Axon Pro;
- ZTE Axon Max;
- ZTE Axon;
- ZTE ZMax 2;
- ZTE Blade V7.

Which OnePlus devices will update to Android 7.0 Nougat?

Have Oneplus a special strategy to programmatically improve their mobile devices using OxygenOS or custom firmwares. But all her smartphones use itself as a basis directly Android... The developers have already followed the generation change of the basic version of the operating system Google... Updating current devices to OxygenOS 4.0 on the base Nougat- just a matter of time.

- OnePlus 3 (already updated);
- OnePlus 3T (already updated);
- OnePlus 2 (coming soon, date unknown);
- OnePlus X (will never receive);
- OnePlus 1 (will never receive).

Which Sony devices will update to Android 7.0 Nougat?

Sony has already released a firmware update on most of its current mobile products. An important point - Xperia Z3 will not receive Nougat never, period. It is also interesting that the Japanese are interested in the subsequent update. 7.0 up to version 7.1.1 ... The dates, however, remain unknown.

- Sony Xperia Z3 +;
- Sony Xperia Z4 Tablet;
- Sony Xperia Z5;
- Sony Xperia Z5 Compact;
- Sony Xperia Z5 Premium;
- Sony Xperia X;
- Sony Xperia XA (expected in spring 2017);
- Sony Xperia XA Ultra (expected in spring 2017);
- Sony Xperia X Performance.

Which BlackBerry devices will upgrade to Android 7.0 Nougat?

IN this moment a Canadian corporation came under the wing of a Chinese TCL... And so far, they only have three Android smartphones ready to receive Nougat... But so far there is no information about the preparation of updates. Perhaps something will become clear at the end of February at MWC 2017.

- BlackBerry Priv;
- BlackBerry DTEK50.
- BlackBerry DTEK60.

Which Alcatel devices will update to Android 7.0 Nougat?

Alcatel working hard on adaptation Nougat for their mobile devices. At least four smartphones fall under the update follow-up strategy.

- Alcatel A3 XL (updated from the very beginning);
- Alcatel Idol 4S;
- Alcatel Idol 4;
- Alcatel OneTouch Idol 3.

Which Huawei devices will update to Android 7.0 Nougat?

Company Huawei announced that it is committed to accompanying any of its devices with all updates every three months for from one year after launch to two years. But the terms can be very long. For example, Honor 5X received Android 6.0 Marshmallow long after the release. Nevertheless, some devices have already received the coveted firmware, some of them are testing, some are awaiting the "second round" of updates.

- Huawei P9 (updated);
- Huawei P9 Lite (updated);
- Huawei P9 Plus (updated);
- Huawei Mate 8 (updated);
- Huawei Mate 9 (updated);
- Huawei Nova (spring);
- Huawei Nova Plus (spring);
- Huawei Honor 5X (it will definitely be, no date);
- Huawei Honor 6X (summer);
- Huawei Honor 5C (it will definitely be, no date);
- Huawei Honor 7;
- Huawei Honor 8 (in February);
- Huawei Honor V8;
- Huawei Mediapad M3 (spring).

And this is a list of those devices that the manufacturer refused to update at all for one reason or another.
- Huawei Shot X;
- Huawei Mate S;
- Huawei Honor GX8 (G8);
- Huawei P8 Lite;
- Huawei P8.

Which ASUS devices will upgrade to Android 7.0 Nougat?

Company ASUS has not yet clarified the release date Nougat on their smartphones. Some of the models are not available in some regions of the world. But development is definitely underway. And the model has already become the firstborn ZenFone 3- in January, a stable assembly was unloaded on it Android 7.0.

- Asus ZenFone AR (presented at CES 2017, already updated);
- Asus ZenFone 3 (already updated);
- Asus ZenFone 3 Laser;
- Asus ZenFone 3 Max;
- Asus ZenFone 3 Deluxe;
- Asus ZenFone 3 Ultra;
- Asus ZenFone Zoom;
- Asus ZenFone 2;
- Asus ZenFone 2 Laser;
- Asus ZenFone Selfie.

Which Xiaomi devices will update to Android 7.0 Nougat?

Range Xiaomi officially presented in Russia, and many fans of the Chinese brand are eagerly awaiting the coming Android 7.0 Nougat to their devices. New firmware already available on top Xiaomi Mi 5, but will also follow on other smartphones of the latest generations. True, the "oldies" Mi 2 and Mi 2S, Mi 3 and even Mi 4 have to come to terms with the loss of relevance. In other words, Android 7 and Xiaomi go hand in hand.

- Xiaomi Mi 5 (already updated);
- Xiaomi Mi 5S (expected);
- Xiaomi Mi 5S Plus (expected);

Xiaomi Mi 4S (expected);
- Xiaomi Mi 4 (expected);
- Xiaomi Mi 4C (expected);

Xiaomi Redmi Note 4 (expected);
- Xiaomi Redmi Note 3 (expected);

Xiaomi Redmi 4 (expected);
- Xiaomi Redmi 4 Pro (expected);
- Xiaomi Redmi 4A (expected);
- Xiaomi Redmi 3S (expected);

Xiaomi Mi Note (expected);
- Xiaomi Mi Max (expected);
- Xiaomi Mi MIX (expected);

Xiaomi Redmi Note (will not);
- Xiaomi Redmi Note 4G (will not be);
- Xiaomi Mi 3 (will not be);
- Xiaomi Redmi 2 (will not be);
- Xiaomi Redmi 2 Prime (will not be);
- Xiaomi Redmi 1S (will not be).

How to download Android 7.0 Nougat now?

If an update is available for your device to Android 7, then before following the instructions on the screen, recharge your smartphone or tablet at least to a charge level of 75% and turn on Wi-Fi. It is recommended to back up important data in advance (you can upload SMS messages, contacts and other data to the cloud) Google) - if the installation is unsuccessful, they can be erased.