hello everyone! i charged my iphone 4 last night and unplugged it this morning with a 100% charge and went to work. since then, i have not played with my iphone all day except when i plugged in a wep key for my network this morning. i have two exchange accounts with mail, calendar, and contacts sync on; 1 mobile me account with all choices sync on; and two yahoo accounts with just mail sync on; bluetooth is off; wifi is on.
now when i checked my phone an hour ago, my battery percentage was at 90% and phone usage at 1 hr and 54 mins. technically, the only time i physically used it was when i plugged in my network's wep key. now, why is the inaccurate report of usage? does the exchange account continually sync even if no change takes place, unlike mobile me that it only syncs when information is changed from one device? was that the reason why my battery drain and phone usage was reported like that because it kept on syncing information between mail, calendar, and contacts all day even if no mail arrived or no changes on the contacts and calendar happened? all my settings are the same with my old 3g (except for the calendar and contacts syncing on my two exchange accounts, i just sync the mail) and i get great battery life. can you shed some light on this issue? thanks!
now when i checked my phone an hour ago, my battery percentage was at 90% and phone usage at 1 hr and 54 mins. technically, the only time i physically used it was when i plugged in my network's wep key. now, why is the inaccurate report of usage? does the exchange account continually sync even if no change takes place, unlike mobile me that it only syncs when information is changed from one device? was that the reason why my battery drain and phone usage was reported like that because it kept on syncing information between mail, calendar, and contacts all day even if no mail arrived or no changes on the contacts and calendar happened? all my settings are the same with my old 3g (except for the calendar and contacts syncing on my two exchange accounts, i just sync the mail) and i get great battery life. can you shed some light on this issue? thanks!