Is there a fix for mophie air battery case- not working on my iPhone 4 after upgrade to IOS5?

No issues here. Have you contacted mophie support? Perhaps it was just a coincidence that it stopped working.

My mophie juice pack reserve isn't working with my 3GS post-iOS5.

I have also not been able to charge my iPhone 3GS with my mophie since upgrading to IOS5. It says something like "charging is not supported with this accessory". I have been using this Mophie with no problems for years. Given the short battery life of the 3GS - why would Apple all of a sudden make it incompatible with the Mophie? help!

I just stopped it happening. TURN OFF WIRELESS. It works.