The phone forgot the SMS password.

Vivo phones can encrypt SMS icons through privacy and application encryption or software lock. If the vivo phone forgets the privacy and password of application encryption or software lock, it can be solved in the following ways:

You can try to enter the interface of I Manager-Software Management-Software Lock, and click Retrieve Password-Enter Password Protection to change your password, or click Forgot Password-Enter Password Protection to change your password in the interface of mobile phone settings-Fingerprint and password-Privacy and application encryption.

If you forget the password and secret protection of privacy and application encryption or software lock, you can try to go to phone settings-more settings-restore factory settings-and try to clear all data.

Supplementary explanation:

Erasing all data will erase the important data in the phone. It is recommended to make a backup before this step.

The specific steps to retrieve the software lock password through secret protection are as follows (taking vivo Y55A as an example):

1. Find the iButler icon on the mobile phone desktop and enter the iButler interface.

2. Click Software Management in I Manager.

3. Enter the software management interface and select the software lock.

4. Click to retrieve the password in the software lock.

5. Enter the forgotten password interface and enter the secret answer to change the password.

The specific steps to clear data are as follows:

1. Find the setting icon on the mobile phone desktop and enter the setting interface.

2. Select more settings in the settings interface.

3. Click Restore Factory Settings in More Settings.

4. Select Clear All Data in the factory setting interface.