Finally got around to finalising beta 2. Have squashed a couple of bugs and added a few new features:-
1) Incorrect entries can now be automatically removed.
2) You can now get a hint as to what to do next.
3) Users with small screens can toggle full screen mode on/off with the # key.
Well, I finally got round to releasing the first beta of Mobile Sudoku. It's only been tested on a Sony Ericsson K510i as that is the only phone I own. If you successfully test it on another phone, let me know and I'll add it to a compatibility list that will be included on the upcoming website.