Byron's internet radio cuts out when he's listening on his iPhone running iOS 8.1. Leo says that intermittent Wi-Fi has plagued iOS for years, and Leo says that the nature of the beast is to have drop outs. But since iOS 7 it's really been a big problem. Leo says that Apple must be doing something odd because it's a common complaint.
Wi-Fi can often be promiscuous and can jump from access point to access point, dropping the signal. It could be the metal cases causing the problem. Byron can reset or update the firmware of the router. That could help, but the fix is elusive.