This is orthogonal to google business model, so it will never happen. Specially on Android. To back this claim: Google always had the open source community giv

This is orthogonal to google business model, so it will never happen. Specially on Android. To back this claim: Google always had the open source community give them local data solutions on a silver plate, and they always went out of their way to kill them. First (most well known) example was granular app permissions, by cyanogenMod. Introduced on android2.0 by the community. Partially added to android 5, or 6! Second (more relevant to local data) example, every time an app ask for location, Android collect all the GSM towers it can see, plus all the WIFI networks, and send that to google. Who then matches to their own database and gives you a very quick initial position (plus tag your geolocation for ads, of course). For more than 6 years now, mozilla and openstreet and microG project have provided a fully perfect implementation of this very same system, that works 100% in your device, without any external network request at all. six years. What google did? they actually went out of their way to break the implementation! Starting with Android6 you can only use UnifiedNlp backend if you are able (and capable) to root your phone!