The Apple bumper or any other case that I've tried DOES NOT fix the signal issues. I don't know why people keep saying that Apple should give us a free bumper to solve the antenna issues! A number of people have already posted that they don't solve the issue!!! With that being said!!!! I have never dropped a call due to holding the phone on the lower left corner with or without the case. I do however notice a significant drop in signal when I hold the lower left corner with or without the case. Cleary there is an issue; I just don't know how major it is. Regardless, those of us that are experiencing the issue do not want a free bumper as a fix. I'd much rather have a real fix. The bumpers do not help with the signal loss and therefore please stop saying asking for them in every signal issue related thread. Thanks. PS. Yes I know this is a great thread; you're welcome!