I have had my phone go to "no service" in the middle of downtown Toronto a number of times now. Recycling 3G/cellular data toggles doesn't help. Reset the phone and I'm immediately back to full bars (without any change to location). Lately I've noticed it happens more frequently in certain spots. You'd think maybe there's a gap in service or interference in that area, but why does resetting the phone always solve it and return full bars service in the exact same spot?