Hi All Had a look for help all over the place but really struggling! I am an O2 customer and have purchased a HTC Sensation 4G phone from Amazon.co.uk. Turns out its a T-Mobile branded phone but SIM Free. Its actually one of the T-Mobile for USA phones I think. Everything works with my O2 account now that I have had them change the data plan to a HTC one from my previous Blackberry but the only thing that I cannot do is send and receive MMS messages. I have spent the last 3 days online with O2 and also hunting around the net to get the settings. Lots of ideas but nothing works. Beginning to think I should have not got the T-Mobile branded phone as maybe something is conflicting with O2? Does anyone have any ideas? Simon PS Apart from this, the phone is brilliant!