[londons_explore]

If you have a USA phone, bear in mind most are sold with glonass and beidou and support disabled.

Buy a phone or GPS from elsewhere in the world and you'll get to use all the networks and get much better accuracy.

[ryandrake]

Do you have a source on that? My understanding is that most consumer cellphone GNSS systems today are multi-constellation out of the box. If there is a satellite up there, the phone will use it, no matter which flag is painted on it.

[asdaq1312512]

EU phone, but yeah, good to point out GNSS isn't just GPS anymore. I also agree that the accuracy is insanely good most of the time; I'm just objecting the "accuracy test" using car turn-by-turn navigation :-)