I upgraded yesterday from the iPhone 4 and I've noticed that when I sit in my room I keep losing my home wi-fi signal. It will be connected but show no bars and when I try to do something where internet is involved like Siri for example it says it's having trouble connecting to the network. My original iPhone 4 never had this problem. Anyone else having this problem? I still have the receipt so should I take it back to Verizon, call Apple, or neither?