I've had my mcell for several months now. The 3G in the house is nice. Seems to work better with iPhone than Android. The Android is often not connecting to it.
The hand-off when starting a call on the microcell and heading out of the house has not worked once for me on the Android. I need to see how it goes with the iPhone.
Signal strength is poor. Ended up putting it in the living room. Walk down the hall into the bedroom and in about 20' switches back to the cell tower.
GPS is not too bad. It is about 12' from the nearest window and still locks in.
All in all I'm glad we have it but it is not as powerful as I was expecting.