Updated to IOS 5.0.1 and "so far" it looks like my battery drain is worse.
My 4S didn't have the huge drain like others, but was not real good.
Now after the upgrade, it looks like the battery drain is worse. Sitting on my desk - un used, battery went from 30% to 26% in about 2.5 hours. Before update, it could last 4 hours before any drop at all.
You're claiming 4hours before a 1% drop?
if that is true, you are getting 400hr standby time?
that is higher than the spec rated 200hr mark.