Without it, your phone's location services would be next to useless in any kind of more urban area (next to useless = you'd have to wait for minutes for the pho

Without it, your phone's location services would be next to useless in any kind of more urban area (next to useless = you'd have to wait for minutes for the phone to get a fix and burn a lot of battery in the process). It would not function inside a lot of buildings _at all_. People HATE HATE HATE and complain loudly at their phones if they fall back to pure A-GNSS positioning.