My new Samsung randomly drops from my BT Wifi, at least once a day. I've tried forgetting the network, I've tried toggling Flight mode - the only thing that fixes it is resetting my Wifi box, which isnt ideal when the rest of the family are all using the internet for different things. This is the only internet connected device that suffers this problem, therefore there is no issue with my broadband supply. It will show 'Couldn't authenticate connection' and then sometimes I won't be able to even pick up the network to even attempt to connect.
