2. Press simultaneously and hold the Volume Up(+) and POWER button for a few seconds.
3. Release all keys when you see Recovery mode.
4. Select from the wipe data / factory reset option. Use the Volume Up(+)/Down(-) keys to go through the menu items and the POWER button to confirm the selection.
5. Confirm the reset operation, select Yes. Use the Volume Up(+)/Down(-) keys to go through the menu items and the POWER button to confirm the selection.
6. Now you need to overload the phone, select "Reboot System Now. Use the Volume Up(+)/Down(-) keys to go through the menu items and the POWER button to confirm the selection.
Hard Reset - advantages and disadvantages ZTE Nubia Z9?
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 the stability of its work. Removing viruses that have entered your phone. Solving various problems on the device that arise due to the conflict of applications.
Disadvantages of Hard Reset:
Complete cleaning of all user data on the device. The need to have an up-to-date backup. 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. Before a hard reset, you must first log out of your google account. In this case, after performing a factory reset, the phone will not be locked by the FRP. 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. Not all phone models can bypass the FRP protection, their owners 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:
Synchronization with Google contacts, Google drive. Backup your contacts and information. With the service programs for your phone, you can transfer important data to your PC.