Hey everyone! After restoring my iPhone 4s to iOS 8.4 through iTunes (from iOS 9 public beta) and restoring from my previous 8.4 backup, I can no longer get a 3G signal, just 1x, even in areas where I got 3G previously. In addition, I can no longer use any 3rd-party apps, as they are blacked out and will not open. This is a really big issue that I need help with ASAP. Thanks!