simple explanation, his phone has been hacked
did he like to receive texts and pix from his Nigerian girlfriend? One of them was probably bombed in some way. I'll bet there was no security software on the phone......what model was it?
The phone's been making hidden calls to an overseas premium rate phone line. There'd be no overt sign of the call - it all happens in the background.er
Other possibility is that its sending thousands of spam texts
You need to make sure the handset is reset back to defaults - everything wiped. However it may be best to do that AFTER you've got a detailed statement from the phone company, and then matched the statement line by line with the history from the phone and / or simcard.
However just remember that in the meantime the phone could still be racking up calls without your knowledge
I've got a computer at home at the moment that was hijacked in a similar way - it was used in a cinema as a VOIP phone switch and had somehow been hacked to continuously ring a Nigerian number. The thing is running a Linux distribution, which was abandoned years ago as vulnerable - but the fools were still using it
Last edited by Milo Minderbinder; 28th Feb 2013 at 18:31.