1. Check whether the power button and volume button are touched by mistake.
Check whether the keys of the mobile phone are stuck (for example, the protective case and other objects are stuck), because pressing the power button and the volume down button for more than 10 second at the same time will trigger the forced restart of the device;
Step 2 check the settings
Check whether the mobile phone is set with time switch machine (enter Settings? , search and enter "time switch machine"? ), if the time switch function is set, the mobile phone will automatically turn on and off at a specific time.
3. Check whether the mobile phone is in an environment with too high or too low temperature.
Too low or too high temperature will trigger the low or high temperature protection function of the mobile phone, resulting in automatic shutdown or restart. Please try to keep the phone at 0℃~35℃.
4. Check whether the mobile phone is running incompatible applications.
If you have recently installed software through non-app store channels, it is recommended to uninstall such software and try again. If the program keeps reporting errors and restarts, and cannot be started normally, you can enter the safe mode and uninstall the previously installed software for troubleshooting.
Enter the safe mode: when the device is turned on, when the sign of vivo/NEX/iQOO is displayed on the screen, release the power button, wait for about 5 seconds, and then immediately press and hold the "volume down button". Do not release the button before entering the screen lock interface to enter the safe mode.
Exit Safe Mode: "Safe Mode" is a function of Android native system. After entering this mode, just restart the device to exit. The specific method is as follows:
1), press and hold the power button until the screen displays the shutdown slider or button, drag the slider or click the button to restart the device;
2) If there is no response after pressing the power button for a long time, you can try to restart the device forcibly.
Restart the phone:
1), press and hold the phone power button to pop up the "restart" option to turn it off;
2) Slide down the top of the mobile phone screen twice to bring up the shortcut bar details page/slide up the bottom of the screen to enter the control center, and click the "shutdown/restart" switch;
3), forced to restart the phone; (Mobile phone crashes or the card is recommended immediately)
① ① models of funtouch OS 3.2 and subsequent systems: press and hold the "power button" and "volume down button" at the same time 10 second or more;
② Press and hold the top round key 10 second or more to forcibly restart the mobile phone (NEX 3/NEX 3S is applicable);
③ System model before ③Funtouch OS 3.2: Press and hold the "power button" for more than 12 seconds.
After restarting the device, it still enters "Safe Mode". You can troubleshoot in the following ways:
1), and confirm whether the volume "-"key is touched by mistake during the boot process;
2) Use the volume "-"key to confirm whether the protective shell of the equipment is stuck;
After investigation, it is still unresolved. Can I bring my equipment? Vivo customer service center? Handle.
5. Check whether the storage space of the mobile phone is enough.
Insufficient storage space may cause the phone to automatically restart. Please enter I housekeeper to free up space through "space cleaning" and ensure sufficient storage space.
6. Upgrade the system version
Check whether the mobile phone system version is the latest version. System update will improve the compatibility and stability of the system for third-party applications, and some new versions will add some new functions.
7. Restore all settings
You can enter Settings-System Management/More Settings-Backup and Reset/Restore Factory Settings-Restore All Settings-Restore, Restore Settings Options.
This operation will not delete files or software, but will cancel the password and restore all settings, including the set wallpaper, unlocking method, WiFi, default opening program, etc.
Note: Enter Cloud Service-Device Cloud Backup-Backup Data Type-System Data-Back-Back up some backup system settings and desktop layout immediately; Cloud service-data synchronization-turn on WLAN and Bluetooth to synchronize data to cloud service.
8. Repair the system
How to use the system repair mode:
Enter recovery mode-install system software-confirm the latest version of networking update-download and install the latest version, and connect with available WiFi-download and install-restart after the upgrade package is successfully installed.
Note: Because the system upgrade package is large and takes a long time to download, it is recommended to connect a charger to maintain sufficient power.
How to enter recovery mode:
1. Folding screen: unfold the operation in the power-off state, press and hold the "power button" and "volume plus button" for about 5 seconds to enter the fast boot mode, press the volume button to select "Enter Recovery", and press the power button to confirm the entry.
2.2065438+Equipment listed after September, 2007: Press and hold the "power button" and "volume plus button" for about 5 seconds when shutting down, enter the fast boot mode, press the volume button to select "Enter Recovery", and press the power button to confirm entry? .
NEX？ 3/NEX？ 3S: Press and hold the top wheel key for about 1.5 seconds in the power-off state, then press and hold the volume plus key to enter the quick start mode, and press the volume key to select "Enter Recovery"? Press the power button to confirm the input.
4.2065438+Vehicles listed before September 2007: Press and hold the "Power button" and "Volume Plus button" for about 5 seconds at the same time to enter the recovery mode.
Exit recovery mode: You can click "Restart" in the recovery mode interface to exit.
If you can't quit, you can try to restart the phone forcibly, or use the system repair mode to see if it can return to normal.
If the above methods can't help you solve the problem, please bring the equipment and purchase certificate? Vivo customer service center? Handle.
9, service center testing
If the above methods fail to help the recovery, it needs to be detected and handled by the customer service center (customer service center address: go to vivo official website /vivo Mall APP-My service outlets/after-sales outlets-select provinces and cities to inquire about the customer service center address).
If the mobile phone is damaged by falling or entering liquid, it will lead to unstable operation, so it is necessary to take the equipment to the service center for further testing.