I have an unlocked HTC One S that has major signal issues. When the phone boots, there's no service for a few minutes before it decides to actually kick in. WiFi and everything seemed to not work but after putting it into "Best Wi-Fi Performance" mode it seems have resolved. But the cellular signal drops constantly. I've read that this is quite the common issue with these phones and am wondering how they are so popular if this is the case. Regardless, has anyone discovered the reason for the issue or some sort of jimmy rig to fix this issue?