1. First, turn off your phone using the POWER button.
2. Hold and press the Volume Up(+) and POWER buttons for a few seconds, and release when the Samsung logo appears.
3. Select wipe data / factory reset using the Volume Up(+)/Down(-) buttons to scroll and use the Home button to confirm.
4. Select Yes using the Volume Up(+)/Down(-) buttons to scroll and the Home button to confirm.
5. Select "reboot system now" using the Volume Up(+)/Down(-) buttons to scroll, and use the Home button to confirm.
Hard Reset - advantages and disadvantages Samsung I405 Stratosphere?
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 due to an application conflict.
Disadvantages of Hard Reset:
All your data and media files will be deleted. The need to have a 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 can log out of your google account in advance. Then, after performing a factory reset, you do not need to remember the login password for your Google account. 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. Not all modern phone models can bypass this protection, their owners will have to contact an 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. Backup your data, contacts and media. With the service programs for your phone, you can transfer contacts, media files, and important data to your PC.