I got a hotair soldering station ima try my best :D But i think most of the cheap ones arent bga but look like this one:

I took a look into those “toy” tablets in the 40 bucks price range, most of them seam to have a clearly visible Wireless chipset for wifi/bt, guess ima try to desolder and hope it still boots after.

I am looking for a solution that can run AndFLmsg, sure i could just run Fldigi on a RPi but the solution has to be usable for people who need a simple interface. Using a SBC to emulate Android apps with Waydroid would also be a option but i try to keep the emulation layers to a minimum for power consumption reasons.

U can put apps and data on it via USB otg, that wont be a problem.

Cutting the antennas is far from removing the problem, even without antennas those chips still make a lot of noise in the 2.4ghz band. Id woud have the desolder the whole wireless chipset, i mean i have the soldering equipment for that, but i kinda doubt that a normal android will even boot after the Wireless chipset is gone :/

Audio Modem

Android on PC sounds good, the power consumption would be high tho, and i would prefer a smaller form factor. But a old netbook mainboard + bliss OS could be small enough.

The Librem5 would be perfect, if it wasnt for the price