There is no doubt that the “Find My iPhone” feature will help you track your lost iPhone. However, if you plan on selling your iPhone, resetting/restoring your iPhone, or taking in your phone for repair, then you should turn off the “Find My iPhone” feature. Once the feature is turned off from an iPhone, the device is removed from the list of devices associated with your account and prevents new owners/ untrusted users from being able to access information about you.
Method 1: iPhone 13 or Later
Step 1: Open the Settings app on your device.
Step 2: On your Settings menu, select your Apple ID at the top of the menu. You must be logged in to your Apple ID to turn off the Find My iPhone feature. Then select the Find My option.
Step 3: At the top of the next page, Tap Find My iPhone, and toggle the Find My iPhone setting off. You can also toggle off the Find My network, and the Send Last Location option (which automatically sends the location of your phone to Apple when the battery is critically low).
Step 4: Enter your Apple ID password. and select Turn Off. As soon as you type in your password, the Find My iPhone feature will be disabled instantly. If you want to turn the feature back on, follow the step above.
Method 2: iPhone 12 or Earlier
Step 1: Go to the Settings menu.
Step 2: At the top of the menu, tap on your name (Apple ID).
Step 3 Navigate to the iCloud menu and enter your password.
Step 4: Choose Turn Off to disable Find my iPhone.
Note: If you change your mind, you can always turn on find my iPhone on the same menu depending on the model you have.