I use an AT&T 8525 smartphone (it's the HTC Hermes TyTN) that a friend recommended (some friend!). I've been pulling my hair out with its daylight savings bug—events have the correct time in Outlook on the computer, but are an hour off or worse on the phone. Outlook stores events in UTC and displays them in the local time zone. Events that take place during daylight savings time occur one hour earlier UTC, but Outlook knows that. Windows Mobile 6 doesn't. Why would a Microsoft programmer creating a calendar program care about daylight savings time? It only affects half the year! So all appointments during DST are listed on the phone as one hour earlier. Worse, all-day events are stored as midnight-midnight, with an extra flag marking them as all day long. The bug shifts the event to 11pm the day before, still marked as an all day event, so Easter Sunday falls on Saturday on my phone!
Solution: Follow the instructions at Microsoft's website: www.microsoft.com/windowsmobile/en-us/downloads/microsoft/daylight-savings-update.mspx. The phone resets itself without warning; that's OK. The times are still messed up. Open Outlook and make sure your contacts and calendar are correct. Now open Active Sync and select Delete Mobile Device from the File menu. This means that everything on the phone that syncs (Calendar, Contacts, etc.) will be erased and recopied from the computer (Microsoft neglected to provide a way to just sync with "computer overwrites handheld" for just the calendar, the way Palm does). Connect the phone. A "Connected" message appears in Active Sync, then the whole program disappears. Disconnect the phone and reconnect. A "Connected" message appears in Active Sync, then the setup wizard starts, and you can sync as usual. Pray that all your critical appointments will be copied correctly (this took 2 hours with my data). The phone calendar now has the correct days for all-day events, but the times are still off. Changing the date to a day in DST (under Settings/System tab/Clock and Alarms), however, corrects the times, both during DST and regular time. Changing the date to the correct date does not lose the correction. Restarting the phone makes it forget the correction, so you have to do the change date hack again.
Liberally mutter or curse while performing this arcane art.
Bottom Line solution:
- Don't buy Microsoft products
- If you must buy Microsoft products, don't depend on them
- If you must depend on them, keep multiple backups and count the days until you can justify buying an iPhone
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