GPS via WiFi does work but puts me in a nearby city (making it useless for navigation). Note I didn't use it much with a SIM card, so maybe GPS works better with that. Mobile data does work, 4G LTE and all.

Cameras do work but early stages right now, here are some sample images:

very bright conditions (very sunny, direct lights)

very dark conditions (nighttime)

ideal conditions (in the shade)

I personally think the cameras are objectively not great, but they do work and some of the images look pretty cool and almost film-like with glare, graininess, colour shift, etc. It's different from modern smartphones where every photo is automagically good through lots of algorithms, while with this guy you need to find good lighting and such