Just updated my iPhone this morning into iOS 5.0.1 the latest free update of the Apple for iPhone 4S, iPhone 4, iPhone 3GS, both iPads, and the 3rd and 4th generation iPod touch. This is my very first time I am updating on the air using iOS 5.0.
Yes, I didn't use iTunes to connect my iPhone just to update the system. Simply, just go to Settings => General => Software Update, and tap Download and Install (see illustration below).
It says will fix the bugs affecting battery life but there are comments posted on the report about users who are still experiencing inexplicable battery drainage problems.
I haven't seen any problem at all though I've noticed that my battery usage was still the same before my update.
I still want to update my iPhone to keep up to date of the latest iOS for a better experience. Do you have other problems? Tell us in the comments.