would this work in vacuum failure?

I'm just letting you know what multiple sources agree upon when doing a simple search. The more I research it, the more it makes sense to have a compass that doesn't rely on electricity that will simply always work. I'm not finding anything anywhere that says an iphone compass is *more* accurate than a standard compass (at least not on a meaningful level that would make a practical difference for basic navigation puposes). And your initial argument is that it is better and seemed to think that people that don't know that are ignorant and need to get some education. But here's an AI summary of magnetometer vs compass that seems to be in line with everything I've been reading. A magnetometer is generally **more versatile and potentially more accurate** than a traditional compass because it measures the exact strength and direction of magnetic fields in 3D, whereas a compass only indicates horizontal direction. However, magnetometers are highly sensitive to magnetic interference, meaning **a conventional magnetic compass can be more reliable in simple, uncontrolled environments.** Once again, the more I research it, it seems an analog compass tends to beat smart phones **in terms of reliable accuracy.**