Samsung stays on the logo screen after booting! !

Samsung mobile phone has a boot screen, but it can't boot to the standby screen normally. You can do this: 1. Remove the SIM card and SD card at the same time, and then try to boot. 2. When restarting the machine, when you see the "SAMSUNG" logo icon, please press and hold the menu button (left touch-sensitive button). For the recently launched models, press and hold the volume down key until the words "Safe Mode" appear in the lower left corner of the screen, then release it and back up data (such as contacts, text messages, photos, etc. ) and restore the factory settings. 3. If you can't enter the safe mode or the problem still exists after the operation, it is recommended to bring the three-guarantee certificate of your mobile phone and send it to the nearest Samsung service organization.