Apple mobile phone SMS lock

Apple phones can't set application locks, but they can set access rights to hide applications. In, set general application access rights, and then click Open.

The steps are as follows:

1. Open Settings-General, as shown in the following figure:

2. Click "Access Restriction" and enter the password, as shown in the following figure:

3. Click "Enable Access Restriction" to turn on or off the access restriction of the application, as shown in the following figure: