My old smartphone and my short lived tablet neither were Pokemon compatible, I am lucky I now have a second hand lg stylo so I can play Pokemon go but sometimes I can't.... The GPS is jacked up on this stylo (one reason I got it cause they didn't like that issue) and so sometimes I can't get a signal and I get a blank game map or I'm at a poke stop and don't receive my items because it says I'm not at the checkpoint stop so mine is 50-50
If I was able to trade Pokemon via internet or you log in my poke account some how I would send you a Santa Pika they are swarming around my yard