iPhone weird WLAN problem
My brother can't use AirPlay with his iPhone4 anymore (iOS7)
What is weird:
we have scanned the network on the iPhone with a scanning App in his WLAN. As devices only the Gateway and the iPhone itself are on the list of found devices. Not his Mac, nor Apple TV, nor his iPad. The iPhone is in the correct network, he does connect to the internet, but no other devices are visible for him. Obviously AirPlay does not work.
When we do the same scanning on his iPad and every device is shown.
We have restarted the iPhone, even with a hard reset, but no change.
Is this a setup problem or a hardware bug?
MacBook Pro (15-inch Core 2 Duo), OS X Mountain Lion (10.8.5)