The problem of being unable to boot is caused by random flashing, flashing the wrong package, or flashing an unstable flashing package. This problem is a problem for experienced users. The following content is the phone boot recovery that I have carefully organized for you. Factory settings, welcome for reference! Part 1 of restoring factory settings after turning on the phone

1. Shut down the phone

2. After the phone is turned off, press and hold the power button + volume up button + home button at the same time

< p>　3. Then select: wipe data/factory reset this option

　4. Then enter this interface and select: YES

　5. Then the phone will restore the factory settings by itself

6 After the factory reset is completed, return to this interface and select: reboot system now (restart). Turn on the phone to restore factory settings Part 2

First of all, in order to solve the problem of the phone not being able to turn on, we should First, let’s know why the phone suddenly cannot be turned on? Through investigation, the author found that most of the reasons for the inexplicable failure to boot are roughly the following:

1: Caused by random flashing, flashing the wrong package, or flashing an unstable flashing package. Booting problem, this problem is a problem for experienced users, just go and refresh it again!

2: The phone has never been flashed, and I haven’t had any troubles recently. It cannot be turned on for no reason, and it restarts endlessly! This situation generally occurs more often on brand-name or copycat machines. The solution to the problem is the same as the following.

3: Deleted system files by mistake. Some mobile phone users like to root. Of course, rooting is necessary, but some novices delete some system files randomly after rooting their mobile phones, causing the mobile phones to fail to boot normally. .

Based on the above-mentioned problem that the mobile phone cannot be turned on, Huang Xina, the first Android station, teaches you a trick to easily solve the problem:

If the phone cannot be turned on not because of the flashing problem, Then most of us can use the official REC in the mobile phone to restore the factory. The so-called REC is Recovery, we call it REC for short, expressed in Chinese words. We can also call REC recovery mode. Samsung mobile phones like to call it coal mining mode. In the past, some people also called REC recovery mode hard-blocking. Yes, this is what many people called hard-blocking the phone before, restoring the phone to factory settings! So how to enter REC recovery mode? What to do after entering recovery mode?

The method for most mobile phones to enter REC recovery mode is:

In the off state, press and hold the volume + button and the power button at the same time to enter REC mode

If that doesn’t work, press and hold the volume-key and the power button at the same time.

If that doesn’t work, it means your phone may have intermediate hardware, such as some Samsung models, which are used in mobile phones. If there is a hardware button in the middle of the bottom, we need to press three keys to enter REC, that is, press and hold the volume + sign plus the middle key + the power key at the same time, or hold the volume down key plus the middle key and the power key at the same time. You can enter REC recovery mode!

After entering REC mode, most official RECs are in English. We can use the volume keys to select the move, move to the third line: wipe date/factory reset, and then press the power button to confirm, and you can select YES

Select YES——all user date

Then it will automatically return to the original screen. Select the first reboot system NOW and reboot to successfully boot!

Summary: After entering REC mode, remember these English meanings and you will be able to solve the problem easily:

-wipe data/factory reset Clear the data partition and restore factory settings

-reboot system now Restart the system

-apply sdcard:update.zip Use update.zip in the root directory of the SD card to update the system

-wipe data/factory reset Clear the data partition And restore factory settings

-wipe cache partition Clear cache partition

-install zip from sdcard Select files from SDcard to update the system

backup and restore Backup and restore< /p>

-mounts and storage

Advanced

Power off

GO back to the previous level

< p> Select install zip from sdcard and select the file from SDcard to update the system. The following options appear:

Apply sdcard:update.zip Use update.zip in the root directory of the SD card to update the system

-- choose zip from sdcard Select zip format upgrade package from SD card

--toggle signature verification Switch signature verification

--toggle script asserts Switch upgrade script check

The English of REC mode is roughly as follows: Some models are different, but as long as we see -wipe data/factory reset, we will know that this is to clear the data partition and restore factory settings.