My wife and I are visting India and experiencing a strange problem with our 15month old 3GS phones. On some days the phone discharges rapidly -- from full to zero in a 3-4 hours with no usage. Push, location, wifi, BT, 3G, are all off. This has happened on both our phones -- but not everyday. I've tried manually selecting a local carrier which did not seem to help -- tried Airtel, Vodaphone, Aircell, Tata Docomo, etc. Sync'ing to our PC seemed to help, but today even sycning did not help either of our phones. Puzzled and frustrated. Has anyone experienced this? Any idea on causes and/or solutions? Thx!