My $350 device is incompatible but $60 is compatible for this game :-/ pls help

Hi guys, been really trying to get this one:

https://play.google.com/store/apps/d...jdEMGqUY-RsMAJ

My Huawei Ascend Mate 7 it shows is incompatible but a random Obi phone I bought as a back up http://m.gadgets.ndtv.com/obi-python-s452-1846 appears to be compatible.

This is super weird, I've tried side loading with apk and obb, but when I run, I get error authentication process has failed, please check internet connection. :-/

Would really appreciate the help, its a great game BTW, played on iOS, been waiting for it for a while.

Thanks!