I need a palm to have my calander and address book on hand at all times. This model proved to be extremely inefficient. The lack of backlighting meant that often I could not see what was on the screen and it's memory would empty from one moment to the next. I would be stuck with no calander or address book. I contacted the company by email and the only advice they had was to keep the Palm seperate from my cell phone. This I did, to no avail, the Palm continues to discharge it's memory.I have now discharged the Palm into the rubbish bin and will not purchase another!