To check if your Android phone is unlocked, try swapping in another SIM card or test your network settings. If calls work, ...

The IMEI (International Mobile Equipment Identity) number is a 15-digit unique identifier for all cell phones. It is used to identify the phone and the manufacturer and whether it is original or ...

Have you ever wondered exactly how a SIM card works? We’ll help you understand why your phone needs one and what they do to keep you connected. Image: TalkAndroid Editorial Note: Talk Android may ...