But this way you can't unlock it if it's sitting on a desk or whatever face-up. That is where the finger rests during use, but you usually only want to use the

But this way you can't unlock it if it's sitting on a desk or whatever face-up. That is where the finger rests during use, but you usually only want to use the fingerprint reader before it is resting there, to unlock the phone when you begin using it. Most of the time when you're using the device you're not using the fingerprint reader.