Or you’ve let someone else use your iPhone, and they’ve signed into the Apple App Store with their own Apple ID to download an app, forgetting to sign back out again.Įither way, the presence of someone else’s Apple ID on your iPhone can cause a number of problems. You might have acquired a used iPhone and the previous owner is still signed into the device through their Apple ID.
This can be a frustrating problem, and it usually takes two forms. So someone else’s Apple ID is on your iPhone.