Step 1: please Open the “Settings” of your iPhone, and select “iCloud”.
Step 2: Click on “Find My Phone”.
Step 3: Turn on the “Find My Phone”.
Step 4: so, now you need to enter the correct password for the Apple ID, then click “Turn Off.
Step 5: then, “Find My iPhone” can be successfully turned off after you enter the correct password. Then after your bound email will receive a reminder from Apple.