Some users are claiming that iOS 5.0.1 hasn't fixed issues with battery life that it was supposed to remedy.
In fact, some who have applied the update are even reporting that the battery lifespan of their iOS device is even worse, according to a thread on Apple's discussion forum.
"After upgrading to 5.0.1 my iPhone is draining the battery even faster! Anyone else seeing this problem?" one post reads.
"I can support this too.. After installing 5.01 i charged it up fully before going to bed and after 7 hrs just sitting there lost 79%, and have lost further 5% while logging in and typing this. Going to try a full back up and restore this eve..." wrote another.
"Before the 5.0.1 update I actually didn't have any battery problems on my iPhone 4S. But thanks to this update I now seem to have one, too," another reads.
Not everyone agreed, though. "After the update my battery life is SIGNIFICANTLY BETTER. Perhaps you are all not applying your setting scorrectly or have apps running in the background. People jump on the bandwagon so quickly when they don't even know what the true cause of the issue is. It might be user error," another post reads.
Apple hasn't issued a response yet, though we want to hear from those of you who have upgraded to iOS 5.0.1. Tell us what your experience has been in the Comments section below.