Before the update, my Touch battery would easily run all night, with at least a 50% charge left in the morning.
Since I downloaded & installed the iOS 4 update last month, the battery can’t make it through the night. I wake up to a completely drained battery, a dead-in-the-water iPod, and … no alarm.
Scrounged around on the net & found this cNet report on the battery drain issue. Glad to know it’s not just me, or my iPod, it’s caused by changes Apple made to the OS.
So now I’m keeping my Touch in Airplane mode. I only turn on WiFi when I actually need to check email, then try to remember to turn it back off again as soon as I’m done.
This at least keeps my Touch alive overnight, but the battery life still isn’t anywhere near what it was before iOS 4. As in, maybe 2 days intermittent usage as opposed to the 4 or 5 days I used to get.
Thanks a lot, Apple!