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Huh? Which rom asks this? Usually you have to go through hoops to get microg, and only a handful of roms have it builtin. It can only ask if you want to enable microg not installing it or not, microg to correctly work it should be installed in /system/priv-app
, to do that after boot on device, you have to be root.
Do you use any app from aurora or outside fdroid? If your answer is no, than you can use android without a GMS package.
Also as I wrote, location won’t work for you underground or inside concrete buildings. If you are fine with these kind of limitations than you can obviously.
Marwin (the main developer of microg) said in some interview that he doesn’t want microg to exist, and in a perfect world we shouldn’t need such workaround. I would be also happy if android wouldn’t depend this muhc on google
Yes. Your phone could triangulate its location from nearby celltowers ane wifi networks. Google has a database of wifi routers (actually that was the point of google streetview, they collected wifi bssids alongside taking photos, they also collect this data from android devices).
With microg you can select from different dbs for this, they are called ‘UnifiedNlp backends’: apple has a similar db from iphones, mozilla used to collect this data with a separate app for MLS (they shut down the project in 2024 march). Microg builds an on device private db as well, it will remembers the wifi networks and celltowers you were close to, and next time you are there it won’t need gps, saves a ton of battery life. This was called Deja Vu, I love this name. Search for UnifiedNlp on fdroid you can find some more options.
Since MicroG 0.3 you don’t have to install these separately, Mozilla and Deja Vu are builtin, and they are more than enough