Make sure to use their official webUSB installer https://grapheneos.org/install/web https://grapheneos.org/install/web And that you install Google services thr

Make sure to use their official webUSB installer https://grapheneos.org/install/web https://grapheneos.org/install/web And that you install Google services through the "apps" app, to get a usable phone. If gps isn't as fast as you expect, you may have to enable Google location services, I had to do that otherwise it almost never works indoors due to lack of support for local wifi scanning.