Remote erasure is a characteristic function of iphone, and it needs to meet two conditions. You must turn on the "Location" and network functions of the device. You must turn on the "Find My iPhone" function in iCloud function. Clicking this will erase all the data on the iPhone, which is equivalent to formatting.

The remote erasing method is to open the official address of iCloud on the computer side, and then enter the Apple ID bound by the mobile phone. Then click the Find My iPhone icon. Then a map will appear on the screen. Click the device button in the upper left corner and select the device you want to find. If the device is online, the general location of the mobile phone will appear on the map.

After positioning, click the lost mode to temporarily lock this device. Click the device button in the upper left corner, select the device you want to find, and then select the lost mode. Just set a password, and the device will enter the password lock state. As long as the wrong password is entered, the device will remain locked and lost. Then click Remote Erase to erase all the data of the mobile phone.