My microcell stopped connecting and I unplugged it over night and plugged in the next day. Spent a couple of hours reading and found this forum. I reset my network settings and did a hard restart of the phone and bang its working again. I never turn off the microcell so maybe some kind of update happened there when it powered up? Thankfully I am back in business.
Are you using a 4 or 4s? We've seen that if you put the iphone into airplane mode for 30 sec then back to normal, it will connect back to the MC. Were seeing that if the iphone goes to sleep for a period of time then you turn it back on, the iphone wont connect to the MC and connects to the lower cell tower signal. This seems to be a Apply issue. I'll try your powering off the MC tomorrow and see how it goes.