My wife and I recently purchased 2 Droid Xs. My phone has no 3G reception in our house while my wife's has full 3G bars at our house. Speed Test shows a 10:1 difference. When going to a different location such as at a certain restaurant, I have full 3G reception on my phone but my wife's phone only has 2 bars for 3G. What would be the technical explanation for this phenomenon?