I think most phones with a GPS receiver don't use it for time, they use the native network time signal instead. This is annoying as the (formerly) GSM time sign

I think most phones with a GPS receiver don't use it for time, they use the native network time signal instead. This is annoying as the (formerly) GSM time signal in many cases used to be _way_ off, like, 5-10 seconds off. This situation has improved somewhat in the last 10 years or so.