My brother bought an iPhone 6 Plus, and it has a small problem. When it connects to a wireless network, it will disconnect, and reconnect within a couple of seconds about every hour or so.
He has made sure that the software is up-to-date, and that didn`t help.
WiFi settings are Its WPA/WPA2, AES. Other iPhones connect without a problem.
What would be causing this, and how can it be fixed?