multiplayer problems in 9.0 alpha build 2

I am on a Samsung galaxy s4 and I am trying to join a local server on another Samsung galaxy s4 and it disconnects me almost instantly every time I try joining. When I join the game I spawn above the clouds and fall to the ground and take no falling damage in survival. Once I am on the ground and start to move around I get disconnected. If I manage to move a few feet before getting disconnected, I still cannot see the player hosting the server, even if they are right in front of me. This happens when either player tries to join a server. This problem is occurring in alpha build 2