2. Hold the Volume Up(+) and POWER buttons for a few seconds.
3. When the FastBoot Mode mode appears, release all the keys.
4. Select Recovery Mode. Use the Volume Up(+)/Down(-) buttons to go through the menu items and the POWER button to confirm.
5. Select three times Wipe Data. Use the Volume Up(+)/Down(-) keys to go through the menu items and the POWER button to make a choice.
7. Select OK and confirm with the POWER button.
8. Select back and confirm with the POWER button.
9. Select Reboot System and confirm with the POWER button.
Hard Reset - advantages and disadvantages Vivo X21?
In simple words, Hard Reset means hard resetting the phone. As a result, the system automatically returns to the factory settings and the system is completely cleared. Contacts, correspondence, application, files, search queries, passwords - all of this is deleted from the device's memory.
Benefits of Hard Reset:
The ability to get a completely clean phone from user settings and data. Removing viruses that have entered your phone. Solving various problems on the device, for example, with a camera, Wi-Fi or other applications.
Disadvantages of Hard Reset:
Complete cleaning of all user data on the device. The need to have a fresh backup of your phone's data, contacts, and media. Unfortunately, in some cases, not all viruses on Android will be removed, even after a hard reset.
What needs to be done before the Hard Reset operation.
If you want to do a hard reset on your phone, then make sure you know the login / password for your google account. Also, before resetting, you must first log out of your google account. In this case, after performing a factory reset, the phone will not ask for any logins and passwords and you can use your device. If, after a hard reset, the phone is locked by the FRP and you cannot remember the login password for logging into your Google account, then you need to use the instructions for bypassing the FRP lock for your phone model. Some new phone models may have problems with bypassing the FRP protection and for this you will need to contact the official service center.
After performing a hard reset, your device will be completely wiped clean. Everything that was in the memory of your device will be deleted.
What can be done to avoid losing important information?
If important information (contacts, photos, videos) remains in the memory of your phone, then it can be saved in several ways:
Sync your data with Google contacts, Google drive. Create a backup using Titanium Backup. Transfer important data to your PC using service programs for your smartphone model.