Description:
There are times when you set it up yourself without remembering where and how to get everything back or a lot of applications cost, or maybe just sell, give, give away for some time to other people your Android smartphone. And you need to clean, clean or restore your smartphone to a state, like after a purchase. In this case, it is necessary to reset to the factory settings, which will delete all your personal data: all contacts, SMS, photos, applications installed by you that are stored on the phone.
Yes, if you think that everything that you delete in the chat is not needed, create it anyway backup all data before starting recovery.
Remember that data from external memory cards will not be deleted unless you select the additional option “Clear SD card”.
Resetting procedure on Android version 2.3: open the menu item Settings, in which select- "Privacy" and then select "Reset Settings" or "Reset Data". Now it remains to click on “restart phone” and after confirming your intention by clicking on “Erase everything”. The smartphone will reboot and the factory settings will be restored.
Resetting procedure on Android fourth version: select the “Reset and restore” item in the settings menu, then click “Reset settings”. We read and agree to carry out the operation to clean the smartphone by pressing the "Erase Everything!" Or "Reset Settings" button. Then you will return to the original factory settings of Android!
It is not rare that a smartphone or tablet locks up, freezes, spontaneously reboots, does not respond to anything, or simply starts to fail, in these cases Android device need a hard reboot– hard reset, while all your data, settings and downloaded applications will be deleted! Your device will recover to original condition from the factory. At the same time, it will be impossible to restore everything later, but the data from the memory cards and SIM are not deleted.
In principle, it is not difficult to make a hard reset on Android if you know the key combination set by the manufacturer to enter “ Android system recovery ”, which you can find out from the list below or try to find it on your own, especially since touch smartphones use mechanical keys for these purposes and there aren’t so many of them that it’s not long and difficult to select the right combination.
So, you are in the Android menu system recovery"And we see the lines: reboot system now; apply update from sdcard; apply update from cache; wipe data / factory reset; backup user data; wipe cache partition; restore user data. We move around the menu by pressing the volume buttons up and down, go down to the line “wipe data / factory reset” and press the Home or Power key to select it. After that, we will see a new menu, where there will be many different lines, we go down with the name “Yes - delete all user data” and activate it with the Home or Power key. That's all we wait until the phone reboots, after which it will turn on with the factory settings.
How to enter “Android system recovery”? For most models of smartphones and tablets, this is done as follows: turn off the device, press and hold the volume down and power button simultaneously.
Samsung to enter the “Android system recovery”: you need to turn off the phone, and then simultaneously press the buttons: volume up + Home button + power on.
For Sony Ericsson: Turn off the smartphone. We press simultaneously the buttons: cameras, volume down and on.
For LG: turn off the phone first. After we press and hold the button for about 10 seconds: volume down + Home screen (Home) + Power / Lock. We release one Power / Lock button immediately after the LG logo appears, and the rest when the Recovery screen appears.
For Huawei: suitable combination of simultaneously pressing three buttons: turn on + carry volume + volume down.
For HTC: Turn off the smartphone: Press and hold the volume down button, and then briefly press the power button. Release the volume down button only when you see the Recovery screen with the three androids depicted on it. Find the Clear Storage item and select it by pressing the power button. Confirm the action with the volume down button.
Intensive operation of the mobile gadget leads to the fact that over time, its operating system begins to “fail”. Errors appear in the operation of certain applications, the device freezes, functions may not be available. This material will allow you to find out when an Android system recovery is required and how to do it correctly.
First, consider the reasons why you can determine the need for recovery standard settings platforms:
- Infection of a mobile gadget with viruses and malware. This is due to the fact that the user did not think about the security of the device and did not install an antivirus program on it. The probability of infection of the gadget will be high if the user constantly clicks on suspicious links from emails. This is due to the installation of unofficial programs and applications or software developed by hackers. Viruses can infect your phone from suspicious Internet resources.
- Littering the platform. This problem is relevant for active users who regularly download new software and applications to their phones. The official store offers users a wide selection of applications and programs, but this does not mean that you need to download everything. A large number of installed programs will lead to a decrease in work efficiency operating system, in the end, it will "hang", which is almost impossible to work.
- Software malfunctions in the phone. There are no viruses on the smartphone, from the programs - the necessary software, while the phone does not work efficiently. The reason may be a malfunction in one of the installed utilities. And sometimes the malfunction lies precisely in the operation of system applications.
Recovery procedure
The recovery procedure is not a particularly complicated process, which a student can handle today. To do everything right, consider a few nuances described below.
If you are faced with the need to restore the operating system on a phone or tablet for the first time, it will be useful to learn about the backup function. When you completely update the platform and return it to the factory configuration, all user information, account information, contacts, etc. will be deleted from the phone. Therefore, you will have to re-find and install the programs and applications necessary for normal operation. Remembering the list of all installed programs on the phone is almost impossible, it is especially difficult to find applications. You can use the option to copy your account, this will register all the programs on Google Play.
The backup procedure is as follows:
- To get started, go to the phone settings menu.
- Here you will see the Restore and Reset Settings tab. Select Reservation Information (Reservation).
- Check the box next to the item. This will save the information in the cloud service.
- Next, you will need to specify account Google for data backup.
- Below you can see the inscription - Auto Restore. Check the box next to the item.
- When the actions are completed, all your information will be restored to auto mode to factory settings after you perform the restore (video published by the Android Software channel).
Please note - after recovery, you must specify the username and password of the account that was used to register on Google Play.
Android reset procedure
If the operating system has flown on your mobile gadget, but at the same time you can go into the settings, then you can try to perform a recovery.
How to restore the device with your own hands:
- First, go to the phone settings option and find the tab for Restoring settings and resetting them.
- Go to the reset point. The gadget will warn that the information will be deleted from the phone. If necessary, do backup data or select files and transfer them to external storage. A little lower is the red reset button of the mobile computer.
- Select Reset Settings. A warning appears that the data will be deleted from internal memory. If there are important files or documents in the internal memory and you do not want to lose them, you need to copy all this data to an external memory card or to cloud storage. At the same Google drive, eg. Below the “red button" Reset the mobile computer.
Write separately on paper the data from entering the account, if you do not remember them by heart, this will allow you to quickly access your account after recovery. - During the reset, you will need to put the phone on charge by connecting a wire to it. The recovery process itself is performed automatically; it does not require user participation.
- When the procedure is completed, you need to authorize in google services, for this you will need to enter a username with a password from the account.
- When you successfully log in, the system will begin to check and install all the programs that were installed before the reset. If you want the installation process to be completed more quickly, connect your mobile gadget to the Internet via Wi-Fi, since it will recover when connected via mobile internet programs will be long. On this recovery is completed.
1. Click on settings.
2. Select the third item.
3. Confirm the selected action.
But what if the operating system does not even respond to touch touches and you can’t enter the settings menu? In such cases, you can use the physical reset function, which provides almost all manufacturers of mobile devices.
In accordance with the technical and design features, the recovery options may be different, therefore, we recommend that you familiarize yourself with the service book for the phone:
- The mobile device can be equipped with a special small hole on the device. Usually this hole is located next to the power button, on tablets it is often located on the back cover, not far from the camera or speaker. There is a small button in this hole, you need to press it with a pin or a needle. In fact, this is a reset button, like on a computer.
- You can try to turn off the device and at the same time press the shutdown key, as well as the volume up or down button (usually this decrease). In some devices, you can hold down the shutdown button, and briefly press and release the volume key. Ultimately, the display should highlight a menu where you need to select the “wipe data factory reset” item, and then click on “yes - delete all user data”.
If there is, then through Recovery mode (there you can save and restore all data), from a flash drive. And so through the computer using prog.
An excellent program for recovering lost data on Android is ... After installing Undelete for Root Users for Android, it will scan a memory card and ...
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The standard recovery console call is the ON button + volume key (down)
if you need to restore the state of the system - then use Titanium backup (root)
all questions on the HERE typewriter
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How to recover deleted files? android and what if recuva does not see the phone?
Download Undeleter Recovery of files deleted from SD cards and internal memory on Android, you can use the link below.
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As she hid, only in reverse order.
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Look on the site undelete-file.ru, there is everything for recovering deleted files.
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Only reinstalling, or restore from recovery, if any
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WHERE the file is important, and WHAT for the phone. If it opens like a flash drive, then it’s elementary Recuva: https://yadi.sk/d/mmBN_ZTs7YhxE
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Sometimes after an unsuccessful update, installation of an application with a virus or unofficial firmware of the device, the gadget starts to malfunction. In particularly difficult cases, you can remove both the firmware and the bootloader, then the smartphone will not be able to load the system at all or reset it to the factory settings. We describe simple and effective waysthat can help restore firmware on Android.
Flashing the phone using a PC
If Android has completely crashed, you need to do a flashing of the operating system. About how to return to its factory version, we will tell for now on the example of Samsung gadgets. There is a completely official way to update using software Kies.
Flashing procedure:
There will also be a recovery code that you copy in the appropriate field. To start the process, it remains to click on the “Restore” button.
If the code recovery program I didn’t offer, it will be impossible to do a flashing.
A universal way to flashing Samsung using Odin
Odin runs on Windows with all Samsung devices. All data after flashing is destroyed, so do it before you need to backup it.
Training:
After that, you can do a flashing. To do this, first run Odin on your PC and put the device from Android into Recovery mode. In Samsung devices, it usually starts as follows:
- turn off the device;
- simultaneously press and hold the Home, "-" and Power buttons;
- then the “+” button once.
After the transition of the device to Recovery mode connect it with a USB cable to the PC. Further:
It remains to wait for completion, after which the device will reboot. Next, you will need to do standard procedures - return old account etc.
Restore LG device firmware
Ways to remove old version and update the firmware through the computer is largely universal. This can be seen in the example of another LG device. To restore the latest factory firmware:
Unofficial LG flashing
If problems in the phone do not allow official flashing, then you can resort to using unofficial methods. For Samsung, as we previously noted, this is the Odin program, for LG - KDZ Updater, for HTC - Android SDK Platform Tools.
Consider the example of LG, how to do a flashing if Android has flown: 
- Download and unzip the archive to KDZ Updater in the system partition of your disk;
- Go to the application folder and run the installation msxml.msi;
- For your device model, download the firmware from the Internet on the website http://lg-phone-firmware.com/, during this time, recharge the device at least 50%;
- Launch KDZ Updater;
- Connect the device using a USB cable, wait until the USB drivers are installed on the PC;
- Make sure that the USB debugging function is enabled on the smartphone (settings section, “For Developers” folder);
- Turn off the device and disconnect the cable from the PC;
- Next, you will need to remove the battery (this is not required for all models), hold down the Volume Down (volume down) button, reconnect the gadget to the PC using the USB cable;
- The display will show S / W Upgrade;
- In the device manager of the "Computer" folder, turn off the LG Mobile USB Modem;
- Go to the folder with the application for firmware and on behalf of the administrator run the file KDZ_FW_UPD.exe;
- In the program, in the Type drop-down list, open 3GCQT;
- In the PhoneMode field, specify the DIAG parameter;
- In KDZ File, specify the path to the previously downloaded firmware;
- The process is started by clicking on Launch software Update, during the flashing the smartphone can reboot several times.
As you can see, the old Android OS can be returned in a way standard for all manufacturers. Using non-original flashers is not always easy, and this process involves the risk of turning the device into a "brick". However, in some situations, only this method can help to cope with the complex problems of your gadget system.
Mobile devices are so closely intertwined with everyday life that the lack of a smartphone at hand can cause panic. And if he broke, then there is nothing to say. For many, this threatens with the loss of thousands of nerve cells. In this article we will look at how to restore the Android device to work with some “breakdowns”, learn how to partially restore its functions before buying a new one and get important information from a broken phone.
The ideal option for the recipes described in the article is a phone with an unlocked bootloader installed by a custom tWRP recovery (CWM has not been updated for a long time), with root privileges and the “USB Debugging” checkmark in the settings for developers. Such a trifle as this very tick will allow in case broken screen not only pull data from the memory card, but also get the contact database or SMS using the ADB plugin for Total Commander.
I recommend that you do these manipulations immediately so that it is not excruciatingly painful when problems arise with the phone. All examples will be given for the Nexus 5, as the most common reference Android smartphone.
PROBLEM # 1. PHONE DOES NOT DOWNLOAD
Let's start with the most common problems. The phone has stopped loading. The Google logo is constantly hanging, and it doesn’t go any further. We have a classic bootloop (bootloop - loading in a circle). It can occur after a monthly security update of the device even for users with stock firmware who have never climbed into the system. Three solutions:
- make a reset from stock recovery (will lead to the loss of all data) or from TWRP (data will not be lost);
- flash from stock recovery through sideload a complete OTA-image in ZIP format, which since May Google began to upload for general use, which greatly simplified the life of many users (data will not be lost);
- flash the full firmware image by first removing -w from the flash-all.bat script so as not to lose data.
PROBLEM # 2. PHONE DOES NOT TURN ON
When the battery is completely discharged, the phone may not turn on even after connecting the charger: after reaching several percent of the charge, the smartphone will start loading, during which it will empty the battery and turn off again. There may be several solutions.
- Connect the charger from another device with a large current, ideally 2A.
- Go to the bootloader (usually volume down + power), then use the "Power" button to confirm the selected Start item. If it does not help, then in bootloader mode, select Power down with the volume, then confirm with the power button. Next, disconnect the charger and reconnect it within ten seconds. The battery icon should appear on the screen. After that, you can try to turn on the device, after allowing it to charge at least an hour. Read more on the official support page.
- Power the smartphone from the computer’s USB output using a self-made frog. To do this, just find any USB-cable (suitable from the mouse), cut it off, and then attach the red wire to the plus of the battery, and the black to the minus. Next, the battery should be put in place (with wires connected) and turn on the smartphone.
PROBLEM # 3. PHONE DOES NOT RING
If you can’t make a call or your smartphone does not see at all mobile network, you should first check IMEI. You can do this by dialing * # 06 #. If zeros were displayed instead of the number, then the IMEI has flown. The easiest way is to restore it from backup, so I recommend making it after reading the article and throwing it in the cloud. IN Play market There are a lot of programs for creating and restoring such backups, so I will not dwell on them. You can do the same with your hands. For example, for Nexus 4 in the terminal emulator or from the console, you need to enter the following commands:
Backup IMEI:
$ adb shell & gt; su & gt; dd if \u003d / dev / block / mmcblk0p8 of \u003d / sdcard / m9kefs1 .img & gt; dd if \u003d / dev / block / mmcblk0p9 of \u003d / sdcard / m9kefs2 .img |
Repair IMEI:
$ adb shell & gt; su & gt; dd if \u003d / sdcard / m9kefs1 .img of \u003d / dev / block / mmcblk0p8 & gt; dd if \u003d / sdcard / m9kefs2 .img of \u003d / dev / block / mmcblk0p9 |
Nexus 5 does not have a separate EFS partition. Therefore, you must back up the entire sections 12 and 13:
$ adb shell & gt; su & gt; dd if \u003d / dev / block / mmcblk0p12 of \u003d / sdcard / modemst1 .img & gt; dd if \u003d / dev / block / mmcblk0p13 of \u003d / sdcard / modemst2 .img |
Recovery is carried out as follows:
$ adb shell & gt; su & gt; dd if \u003d / sdcard / modemst1 .img of \u003d / dev / block / mmcblk0p12 & gt; dd if \u003d / sdcard / modemst2 .img of \u003d / dev / block / mmcblk0p13 |
But what if there is no backup? There is a way to restore IMEI in this case. You need the EFS Professional and QPST utility kits, as well as Qualcomm drivers for your device. First, the modified kernel is loaded, then the phone is reloaded into the diagnostic mode with commands
$ adb shell & gt; su & gt; setprop sys .usb .config diag, adb |
After that, IMEI can be changed. Detailed instructions . If there is no box at hand, then IMEI can be found at Google in personal account on the Android tab.
In addition, you need to find out the SPC code - a six-digit number required for the operation of service programs. You can do this as follows. We download from the market and launch the Nexus 5 Field Test Mode, click three points, then Settings (view), then select LTE, edit, a window will pop up asking for the code. After that, in the console, enter:
Flashing the full image on Nexus 7 via flash-all.bat without the -w option
Red - plus, black - minus
& gt; adb shell & gt; logcat - d | grep "commandId 200" |
The answer will be lines of the form:
& gt; 08 - 02 10: 16: 27.140 14401 14401 D LG_SVC_ITEMS: getCommands commandId 200 - START |
& gt; 08 - 02 10: 16: 27.185 14401 14401 D LG_SVC_ITEMS: getCommands commandId 200 \u003d 353662 - END |
where six digits at the end is the desired code.
Android tab with IMEI in your account
Connecting EFS Professional
Qualcomm NV Tools Utility Included with EFS Professional
PROBLEM # 4. DOES NOT WORK TACHSCRIN
If you fail to drop the phone, you can damage the screen and, as a result, the touchscreen. In this case, the mouse connected to the smartphone via the USBOTG adapter will help. You can also connect the device to your computer and use the console and ADB to control it, as I wrote in the article. ADB will allow not only to launch applications, send SMS and even make calls, but also emulate screen taps. The commands are as follows:
Text - enter a string;
keyevent - emulate pressing a hard button;
tap - tap at the specified location on the screen;
swipe - swipe from x1, y1 to x2, y2.
The same QPST can be activated on the Nexus 5 of the American model D820 LTE frequencies suitable for use in Europe.
For example, you can pull out the curtain with notifications like this (the coordinates are counted from the upper left corner):
If only part of the screen does not work, you can arbitrarily shift the displayed image through the wm overscan console command or the Screen Shift program.
PROBLEM # 5. USB DOES NOT WORK
If by USB phone it charges, but when connected, the computer does not see the device, you can make manipulations with the phone via Wi-Fi. To do this, you need root privileges and the WiFi ADB application. Launch the application, press the button and connect to the smartphone using the connect command and the IP address shown by the application:
The phone will boot. To ensure operability, you can install the GravityBox module for the Xposed framework and enable the “Volume Awakening” option or install the kernel with DoubleTap2Wake support. To be able to turn off the screen (lock), you must activate the option "Double-click for sleep" in GravityBox.
Other hardware buttons can be reassigned by editing one of the files / system / usr / keylayout. There are few hard buttons on the Nexus 5, so I will give an example with a Micromax Q415 smartphone. It has a very unfortunate arrangement of the "Back" and "Menu" buttons, but it is easy to swap them if you edit the file ft5x06_ts.kl:
key 158 BACK
key 139 APP_SWITCH key 172 HOME
key 217 SEARCH
key 249 MENU
It is enough to indicate the keycode 249 on the first line, and 158 on the last line. You can change any other buttons in the same way, including the volume buttons (their settings may be in another file).
PROBLEM # 7. WHAT TO DO IF YOU FORGOT THE PIN CODE
Suppose you forgot your PIN or didn’t quite sober up the graphic key, well, or your friends joked and turned on face recognition. So, if the device is locked for some reason, the lock can be removed (provided that USB debugging and root privileges are enabled) through the same console:
$ adb shell & gt; su & gt; cd / data / system & gt; rm * .key |
The command will delete all passwords and graphic keys. The files themselves, depending on the firmware and device model, can be: gesture.key, password.key, cm_ gesture.key, personalpattern.key, personalbackuppin.key. The locksettings.db, locksettings.db-shm, locksettings.db-wal files are also responsible for locking.
After that, just reboot the device and enter any key, password. If this does not help, you can try the following:
$ adb shell & gt; cd / data / data / com .android .providers .settings / databases & gt; sqlite3 settings .db & gt; update system set value \u003d 0 |
PROBLEM # 8. GOOGLE ACCOUNT REQUEST AFTER RESET TO FACTORY SETTINGS
On all Nexus, starting with Nexus 6, as well as on many modern google phones and manufacturers have introduced a new user data protection system, called Factory reset Protection (FRP). Now, after resetting the device to the factory settings, at the initial setup stage, the user will be required to enter data (mail address and password) from the previous account to which the phone is attached.
According to Google, such protection makes theft of the phone pointless: an attacker who fails to pick up a password will be able to reset the device to factory settings through stock recovery, but will run into this screen when it boots.
But what about honest users who have forgotten the username and password on the device? You set up the phone for your parents and safely forgot your email with a password. Will come to the rescue youTube channel Rootjunky.com website. The channel has many video instructions on how to bypass protection on different devices, including a security update dated June 1, 2016 and android firmware N developer preview 4.
They come down to the fact that you need to get to the browser, download and install the QuickShortcutMaker program, find the Google Account Manager in it, select Type Email and Password, click Try, three dots, then Browser sign-in. Then you can enter the data of any account and reboot the device. The launched setup wizard will no longer require Verify your account.
adb shell make_ext4fs / dev / block / mmcblk0p16After that, the device should work normally. The only negative is that the / persist directory will be empty, and with each reboot, the MAC addresses on Wi-Fi and Bluetooth will change. If this is critical, then additional steps can be taken:
As you can see, even in the event of major breakdowns with the device, it is still possible, even with difficulty, to work or at least get important information out of it. And Nexus is almost impossible to kill. We must really try to intentionally flash the file from another device or pull out the cord at the time of the firmware. I hope that with this article I will move you to the study of the insides and principles of operation of devices and help to save nerves in future breakdowns.
Last updated by at November 18, 2016.
