How to set SMS password for Apple 7Plus?

You can't set a password for the SMS of Apple's mobile phone. You can only lock the screen for encryption.

Specific operation:

1. Find the settings on the desktop.

2. Find "Touch ID and Password"

3. Open, drop down and click "Open Password"

4. You will be prompted to set a password. There are three keyboard forms of password. Touch id to unlock it.

5. Click Add Fingerprint and follow the prompts.

6. Open the iphone to unlock it. That's enough.