Metal detector is a simple app can detect if your phone is close to metal WITHOUT CALIBRATION. If it is close enough it will start to vibrate and a red light will come on. But don’t worry if the silent profile is on it won’t vibrate. It also has a needle and number display which tells you how strong the magnetic pull is. We know you want it so head over to the N8 Fan Club for endless amazed stares from your friends. Compatible with S^3 / Anna / Belle Smart Phones.