Hi
As a new owner of the Phantom i am having trouble when trying to start.
I am doing all the calibrating correctly as required but when i go to fly a warning comes up regularly that my bias is to large please re calibrate.
I do this a few times and the same warning comes up then all of a sudden i am able to fly.
Can anyone advise me what this is and how to eliminate please.
Thank You

Have you done a IMU calibration?
If not, do it on a perfectly lever surface. Also make sure to do the gimbal calibration and a compass calibration away from any metal (including in your pocket, keys/phone).