How to encrypt the iphone address Book?

　　iphone Address Book encryption operation steps

1th Step: Open the iphone and find the "Settings" icon, click to enter;

2nd step: In the "Settings" option, find the "general" sub-item icon, click to enter;

3rd step: In the general settings, locate the access restrictions. If you have already turned on access restrictions, please skip to step 7th after entering the password.

4th Step: Enter the access restrictions, you will see the main list of many applications are grayed out of the state, to modify, first click the above "Enable access restrictions" button;

5th step: Because of the large access restrictions that will affect many important settings, Apple enforces a four-digit password for security reasons.

6th step: Again enter four-digit password to ensure the same password as before, and remember;

7th step: After the password is successfully set, access restrictions will be available, and in the main list, locate the "Address Book" in the Privacy item and click

8th step: The Address Book set defaults to "Allow changes", that is, the application to access the Address book, can be prompted and allowed. In the list below you can see that there are already some applications that have access to the traffic, in this case there are alipay purses and micro-letters that are forbidden to be paid by the Alipay purse. At this point you can disable access to the application shutdown switch alone. If you want to lock the current settings and do not allow new application access, you also need to click "Do not allow changes." At this point, the list will be locked and cannot be modified;

Click "Do not allow changes" to disable all application address Book access;

The current state of the application list will be locked and grayed out after disabled.