Apple's SMS icon is missing. How to save it?

# Apple SMS icon is missing, and the home screen layout needs to be restored. We need (3 steps) to recover the missing Apple SMS icon. The model of this demonstration is iPhone13; . System: IOs15.1; +0; The following are the detailed steps:

1 Click General.

In the phone settings, turn on General;

1. Click Universal 2, and then click Restore iPhone.

After entering, turn on the transmission or restore the iPhone；;

2. Click Restore iPhone3, and then click Restore.

After entering, click Restore.

3. Click Restore