Why does Samsung's mobile phone card display Amgen mode?

If "Safe Mode" is displayed in the lower left corner of the phone screen, if you need to exit, it is suggested that:

1. Turn off the phone and restart it.

2. If the safe mode is still prompted, please back up the data (contacts, text messages, pictures, etc.). ) in the phone, and then restore the factory settings.

If the problem still exists, please take the purchase invoice, maintenance card and machine to the Samsung service center for professional after-sales engineers to help test.