To begin, I’ve done extensive verification of this with both my watches (MIP and Amoled) and others that have the same watches. My intention of using the 8 series is for diving and having a reliable and accurate compass is important to me.
The Amoled version of the watch (verified with 3 different watches) and its compass is accurate. This accuracy is based on outside calibration and trying this on both True North and Magnetic North.
The MIP version though are VERY inconsistent. They’ll be calibrated and then a short period of time later, be off by 30-40 degrees. If it was just one watch, then one could suspect defect but it’s with 4, one includes myself.
While I love the display on the Amoled, I do like the MIP display and the concept of solar (even though there’s a bigger battery drain the solar unites right now) but needing an accurate compass is of utmost importance to me.
Has anyone seen discrepancies with their MIP compasses?