> Phones use MEMS sensors, which are much cheaper than laser gyros Yes, but why? To my surface-level understanding, RLGs sound like they would be easier to int

> Phones use MEMS sensors, which are much cheaper than laser gyros Yes, but why? To my surface-level understanding, RLGs sound like they would be easier to integrate. > It's just the compass that gives a shitty experience. Yep, that's my experience too, and that's why I'd be ecstatic to hear that the compass was being replaced by a RLG (which could be re-locked to true North every time GPS got a decent movement vector). Then again, I half suspect that something is FUBAR'din the current compass stack. I have one of those fluxgate-magnetometer current probes at work and can report that everywhere I've used it I have seen magnetic field vary as a high-SNR continuous function of direction, yet my phone's maps app has a ton of lag, hysteresis, and jankiness when rotating in the same damn field. Maybe we just need to wait for the cheap compasses to get better.