If the Samsung mobile phone has a startup screen but cannot boot to the standby screen normally, you can perform the following operations:
1. Remove the SIM card and SD card at the same time, and then try to boot again.
2. When you see the "SAMSUNG" Logo icon when you restart your phone, long press the menu button (left touch-sensitive button) for recently launched models, and long press the volume down button until it reaches the lower left corner of the screen. When the words "Safe Mode" appear, let go, back up data (such as contacts, text messages, photos, etc.), and restore factory settings
3. If you cannot enter safe mode or the problem persists after operation, it is recommended to bring your mobile phone with you With the three-guarantee certificate, send the phone to the nearest Samsung service center for inspection and repair