Posted by sksxihve 4/13/2025
Also, it smelled a bit like wishful thinking to assume the high precision clock would not be driven by GPS on real world deployments. I know some cell towers synchronize via PTP, but a great many others use GPS as their time source.
Holdover can only help so much, if there's a persistent jamming effort, it can wreak havoc on many time-critical systems.
Poor form. Do better.
No idea how it is in the US, but in EU you can't really easily choose, it will by default use GPS+Galileo combined for better accuracy.
I guess you can through developer settings on android though.
Also you should be able to look up your phone specifications to see what GNSS services it's capable of using on GSMArena
Edit:oh I missed that you're on Apple so that app is useless for you. Still might be of some use to others though.