[Q] GSM radio fail?

view story

http://forum.xda-developers.com – Hello One X forum! So I received a One X I bought secondhand from eBay today. It has problems though; although the phone accepted my sim card and makes calls, the mobile data isn't working. Admittedly, the reception isn't great around here, but even my very elderly HTC Legend can get GPRS (network only goes up to HSDPA anyway) data just fine. Also, while the wifi radio appears to work, it can't keep the signal even from just a few metres away from the router. The phone was originally bought in the UK, (which is where I am not) and appears to have been unlocked from T-Mobile. (I'm on Vodaf (HowTos)