Comment by TrueDuality
4 years ago
No... aGPS doesn't use wifi at all. aGPS uses specific services built-in to the cellular network to accelerate your initial fix.
You're right aGPS does speed up your initial time to fix so the GPS receiver doesn't have to be on as long to get an ephemeral location but other than that it doesn't have any impact on battery life such as when you're looking at Google maps with a constant fix.
My bad, I have been conflating aGPS and WPS. https://en.m.wikipedia.org/wiki/Wi-Fi_positioning_system Still, phones do use hotspot location databases for positioning.