2. Open the dialer and enter the * 2767 * 3855KK code and click the call button.
3. You need to wait until the phone reboots.
Hard Reset - advantages and disadvantages Samsung i640?
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. Removing viruses that have entered your phone. Solving problems that have arisen on the device between applications and for example bluetooth.
Disadvantages of Hard Reset:
Your files and data will be irretrievably lost. The need to back up contacts, settings and media files. 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. You can sign out of your google account before resetting. 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 you cannot use the phone because the phone is locked by FRP, 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. With the service programs for your phone, you can transfer contacts, media files, and important data to your PC.