How to delete all the information in ipad?

Please turn off the "Find My iPhone" function before completely erasing everything on the ipad.

If you have upgraded to the iOS 7 system, you need to log in to your iCloud account and turn off the "Find My iPhone" function in the setup interface before you can really clean up the personal data in the iOS device.

1. Enter the "Settings" interface in the iOS device, scroll down to find and enter "iCloud";

2. Continue to scroll down to find "Find My iPhone" and close it;

3. At this time, the system will prompt for a password, and the function will be turned off after the password is entered.

After completing this step, you can really start deleting the data on the iOS device. However, the above steps are only for systems above iOS 7, and the old system can directly proceed to the next step.

To erase all data on your iPhone or iPad:

1. Enter the "Settings" interface in the iOS device, and then enter "General";

2. Scroll to the bottom of the interface and find the "Restore" option;

3. Then select "Erase all contents and settings";

4. The system will prompt "All media and data will be deleted" and click "Erase iPhone";

Once all the data is erased, it cannot be recovered, so you must make a backup.