Really enjoying Wordfeud which is a Scrabble lookey-likey for Android. You play against friends or against remote players from around the world. You can take up to two days to take a turn which means games start off reasonably fast but can then last for several days.
http://www.androidcentral.com/android-quick-app-wordfeud-free
I really like the fact that you can set up push notifications to tell you when it is your turn to play. They have recently made some updates to fix some of the bugs but there are still occasional times when you can’t zoom in to the board.

