Comment #25 From Eero Tamminen 2008-02-01 11:49:56 GMT+3 ... Turning the device off is something you should need to do only if you're not planning to use it for next week(s). When the device is idle, it's best to lock its touchscreen & keys by pressing power + select keys (you can unlock it the same way and in N810 there's even a special lock key). ...