1. First download Xperia Companion on a laptop or PC.
2. Take the program here www.support.sonymobile.com/global-en/tools/xperia-companion/.
3. Install this program to your computer.
4. Turn off the phone and connect the USB cable to the computer.
5. Open Xperia Companion and in the main menu, select Software Repair.
6. Confirm the process, follow the instructions on the screen.
7. Translate Sony Xperia XZ2 Premium in FastBoot Mode.
8. Hold down the Volume Down(-) button Connect the USB cable to the phone.
9. Press the Next button to delete all data.
10. Upon completion, turn off the phone.
Hard Reset - advantages and disadvantages Sony Xperia XZ2 Premium?
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 problems that have arisen on the device, for example, between the camera and other applications.
Disadvantages of Hard Reset:
All your data and media files will be deleted. The need to back up all data and contacts. 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. 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 resetting the settings you cannot log into your Google account, then you need to find instructions for bypassing the FRP lock for your phone model. Owners of new phone models do not get to bypass the protection of the FRP and 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. Using the Titanium Backup program, create a backup. Transfer important data to your PC using service programs for your smartphone model.