AT&T microcell

My iPhone 4 has not been able to connect to my AT&T mircocell since I upgrade to iOS 5. The only way it connects is to go online and disconnect the microcell and then re-activate it through AT&T. Then it only works for a few hours until the iPhone refuses to connect to the microcell agin. This is also not fool proof and only works sporadically. I have terrible cell coverage at my house and AT&T only states that they are aware of the problem and they blame it on Apple. I can't believe that this problem has existed this long!

Does anybody have any updates or fixes?

Thanks!