He complains that he doesn't get cell service anywhere he should (or used to), except sometimes if he is within dicrect sight of and next to a cell tower. He has no issues with wifi connections or functionality. We both use track phone and indeed, I get service where he doesn't. I've got an iPhone 5. His is the 5s. Frame is bent enough so that the glass doesn't seat properly. Does this sound like I should just replace the antenna?