How to encrypt Samsung s6' s mobile phone? Why is the option to encrypt the phone grayed out?

1. To cancel the encryption device, please operate: Settings-General-Security-Decryption Device-Click Decryption Device-Enter the screen lock password-Click Decryption Device at the bottom of the screen again-Wait for completion.

Note: When canceling device encryption, the mobile phone needs to be connected with a charger.

2. If it cannot be operated, the suggestions are as follows: Back up mobile phone data (phone book, SMS, multimedia files, etc. ), restore the factory settings (enter the phone settings-general-reset-restore the factory settings) or send the phone to the nearest Samsung service center for testing and further processing.