How to remove Find My iPhone from your phone
- Sign in to your iCloud account at www.icloud.com/find.
- Click All Devices to open a list of devices linked to your account, then select the device to be removed.
- Click the Erase button to erase all content and settings from the device.
- When prompted, don't enter a phone number or message. Click Next until the device is erased.
- When the erase is complete, click "Remove from Account" to remove the device from the account..