Although you can use a BT mouse the speed is VERY high, and you need to replace the current cursor (Nokia used a transparent one so that it doesn't show up when touching the screen, cursor shows but it's a transparent one, so it doesn't ) A BT keyboard and mouse can be used at the same time (BT specification says a BT device can 'talk' to 7 other devices) BT keyboards work well (tested the Nokia SU-8W)