Turn on your portable wifi hotspot, open your minecraft join in world, game show message: You must be conhecer to Wifi to play with your friends.
In build 1 game not show this error . Now i cant play minecraft with my friends. This message show in client in Play>Friends tab
Bug is tested on Android 4.1.2, 4.4 and 5.0.1

Please make hotspot lan works again.
Suggest for next version: trains or couplings minecart, minecart with furnance and new rails type.

Thanks for making 0.15, good work