Users of Apple's iPhone 4S, who heaved a sigh of relief after hearing the news of iOS 6.1.1's arrival for fixing the battery drain and 3G connectivity issues in iOS 6.1, are once again disappointed.

After three days of iOS 6.1.1's release, iPhone 4S owners are again seen on Apple's support forum posting their problems.

Tough Apple and many tech Web sites report that the latest update of iOS solves the two major issues in iPhone 4S, growing threads over Apple's support forum reveal a completely different story.

The threads started just after some hours Apple released iOS 6.1.1 started getting responses and among all the comments most of them are talking about the problems in iPhone 4S.

"I just did an OTA update from 6.1 to 6.1.1, And i notice that every 2 minutes my battery drops by %1, this is really depressing, Can anyone confirm this isn't just me?" a user identified as Tainted Scream posted on Feb. 12.

However, the problem affected not only this user, but many other iPhone 4S users too.

"It's not your appreciation! The battery drain with iOS 6.1.1 it's worse and I still have the problem with the 3G connectivity! I want to ask Apple that I demand to return to iOS 6.0 pls," another user Rozzko posted.

"Confirmed here too. I updated yesterday and am seeing a marked drop in my battery life in the span of half an hour.  Woke this AM to a dead phone that I use as an alarm.  Lovely when you are late to work because of a firmware upgrade that fails.  FIX NOW PLEASE!" another user posted on the same thread.

Like this other threads talking about iOS 6.1.1's performance are also flooded with these kinds of complaints.

Apart from battery and 3G issues in iOS 6.1.1, the Exchange Server issue and the passcode bug are two new problems for the Cupertino-based technology company.

Though Apple issued a statement regarding the Exchange Server issue promising its users a new and updated, the issues related to iOS 6.1.1 have not been addressed yet.

One more point that is going to disappoint Apple users here is that even if Apple releases iOS 6.1.1 for other devices than iPhone 4S, how will the Exchange Server issue in iPhone 4S be fixed.

Talking about the passcode bug Apple did respond to the growing security concerns, but once again the issue and the fix were not talked about in detail.

"Apple takes user security very seriously," Apple spokesperson Trudy Muller told AllThingsD. "We are aware of this issue, and will deliver a fix in a future software update," he added.

However, the timeframe for the release of the software update was not disclosed. Apple has always been too secretive about its plan but since the release of iOS 6, the Cupertino-based company is maintaining its secrecy at the cost of comfort of its customers.