1. To start the Hard reset procedure, the phone must be turned off.
2. Press Volume Up(+) and POWER simultaneously for a few seconds.
3. Release all the keys when the fastboot mode mode appears.
4. To select Recovery mode Use the Volume Up(+)/Down(-) keys, and press the POWER button to confirm.
5. As you can see, you are in Recovery Mode. Select a language using the same keys as before.
6. Now go to Wipe Data and Cache.
7. Select Erase Everything and confirm it.
8. Select Reboot.
Hard Reset - advantages and disadvantages OnePlus 3?
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 reset the phone, thereby improving its performance. Removal of viruses that interfere with the normal operation of applications and the system. Solving problems that have arisen on the device, for example, between the camera and other applications.
Disadvantages of Hard Reset:
All your data stored in the phone will be permanently deleted. The need to back up contacts and all user data. In some cases, it is impossible to remove all viruses from Android, even after a hard reset.
What needs to be done before the Hard Reset operation.
So that after a hard reset you can use your phone, make sure you know the login / password to your google account. So that, after performing a factory reset, you do not need to remember the login password for the google account, you can log out of the google account before the hard reset. If after a hard reset you cannot remember the login password to enter your Google account, then you need to use the instructions for bypassing the FRP lock for your phone model. Not all owners of new phone models will be able to bypass the protection of the FRP and for this they 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 personal data (contacts, photos, videos) remains in the memory of your phone, then they can be saved in several ways:
Sync your data with Google contacts, Google drive. Using the Titanium Backup program, create a backup. Transfer contacts, media files and important data to your PC using service programs for your smartphone model.