Board Thread:News and Announcements/@comment-50.51.52.229-20150419202410/@comment-26109599-20150502185747

There is no way to chat on Mobile, unless you are playing with a friend and are connected to that friend via Skype, Facetime, etc. The reason you can't type is simply because of the need for compactness in-game. Typing out chat would require an on-screen keyboard, but there isn't any room for it.