is the compass in my Iphone magnetic or gps generated? will it work with a dead battery?

I4 phone

1 Answer from the Community

  • Best Answer:

    They primarily use a magnetometer chip to sense the the earth's field relative to the device. The chip senses the field in three directions, and from that can figure where the magnetic field pointing north is. It can also detect direction of movement with accelerometers and GPS.

    The compass will only work if the iPhone is switched on. If the iPhone battery is low you will still be able to use the compass until the battery is completed drained of power (when it turns it's self off). After that you will need to recharge the iPhone to be able to use the compass again.

    • Answered by Brodyn W from Perth
    • 23-May-2013