How to set the SMS password of iphone 6 plus?

If you can't set the password of Apple SMS, you can only set the screen lock encryption.

The specific operation methods and steps are as follows:

Enter the iPhone6Plus phone settings;

Then click the password option;

After checking the simple password, click Open Password;

Just enter a 4-digit password;

After setting, when we use the password again, we can unlock it by entering the set password.