Overheating and Draining: The iPhone iOS 6.1.1 did NOT solve the issues of 6.1

Yes, for corporate. I recently added a CardDAV account for Google contacts, because I deleted my "personal" exchange account (Gmail) and re-added the proper Gmail account with same login etc. This way, I can delete my Gmail app because my folders/labels are already built in. I'm not sure if the Gmail pre-configured account was an option for iOS 5 when I first bought the iPhone 4S- it was set up for me by the Verizon rep.

However, I just switched the account structure two days ago (one day before the iOS 6.1.1. release) in an attempt to improve battery life (and two reboots) AND also get the benefits of the native Gmail account e-mail structure. So, I was having the battery/overheating problem before I switched the structure (when I had two Exchange accounts, one personal/one corporate).

iOS 6 was seamless for my phone and I experienced no issues. When I converted to 6.1, the battery retained about 30% of its usual lifespan-- and overheats. 6.1.1 hasn't improved the situation.

I think I remember seeing that article...do you recommend I delete my corporate Exchange account and add it back again. That's definitely a workaround solution of which I was hoping 6.1.1 would fix the loop/sync problem.

Might give it a shot..

Deggie, I removed the Exchange account and added back in as you suggested. For now, it seems the calendar sync issue is gone. And the battery life is holding better...but tbd throughout the next day. I have to use Calendar sync for my company though.

Since I deleted the Exchange Account, rebooted, and added it back for my company, my iPhone 4S has been working great on iOS 6.1.1. Today is a very different story: my Exchange calendar is synching correctly and not looping anymore. I induced a full cycle charge this morning and have used my phone very sparingly with 95% left as of 12:50pm including a few texts, notifications, etc.

I recommend trying this approach and using the link Deggie provided. Be sure to wifi backup your phone to iCloud (or through iTunes/local hard drive). Also, make sure you have your contacts saved to one of your Cloud accounts for restoring later when you delete and re-add the Exchange account.

I don't know if the delete/add Exchange account approach will work for everyone, but it definitely did for me.

Thom_D, my problem came from Microsoft Exchange using it for my corporate account. Deleting and reinstalling (and reboot) fixed the problem, stemming from a calendar looping/sync issue. I also was using MS Exchange for Gmail, but there's a better solution: the Gmail iOS account (delete MS Exchange and replace with integrated Gmail iOS account). The caveat is you'll have to add a Card DAV account for your contacts. This is Google's way of sticking it to Apple, and leaving just one functionality short of full integration (like not providing Google Maps for iPads yet, etc). Card DAV is very easy and you won't notice any difference. http://support.google.com/mail/bin/answer.py?hl=en&answer=2753077