[sva_]

> luckily you get the list of currently connected GPS sats

How do you get this list?

[etskinner]

The almanac, which is part of every GPS transmission https://en.wikipedia.org/wiki/GPS_Almanac?wprov=sfla1

[closewith]

GPS really is amazing. It's hard to believe it works at all.

[fragmede]

My favorite part about GPS is that it only works because we understand relativity, proving Einstein right.

[dharmab]

It would work without an understanding of relativity, but the accuracy would drop by about a meter. https://physics.stackexchange.com/a/128951

[mschuster91]

Personally, I use GPS Toolbox. No idea about iPhones though.

[1] https://play.google.com/store/apps/details?id=com.eclipsim.g...