You should use a strong Lock Screen passcode to ensure thieves can't observe you entering your PIN and then stealing your iPhone. And we've shown you how to set up a stronger iPhone Lock Screen ...

If you’re thinking of moving to a new network, and want to keep hold of the same iPhone, you may hit a snag: the device is locked to your current carrier and can’t be used with any other company.

An iPhone passcode is a security feature in the form of a four-digit number or longer code, used to protect your device from unauthorized access. But what happens when you lose or forget this passcode ...