I have noticed a problem with my iPhone 3GS recently. It never goes into standby mode unless I turn on flight mode.
When I have phone mode on it will keep on running something in the background. I haven't been able to locate what it is. I have tried to close down all the apps which are in the quick access list. I have also turned of the
Push. I have practically tried to turn of everything, and nothing help except for if I turn on the flight mode.
Anyone know what the problem might be? This problem is seriously causing the battery to burn down.
UPDATE: ok it seems a simple reset to factory setting fixed it and returned it back to normal. Probably some bug in the iphone tick off when I updated to the latest iOS. Thus made iphone never truely go into standby mode.