hi guys - im in the uk, just phoned up tesco mobile to change my tariff to 4g as it is free now to all customers, anyway i told them i have a htc one x plus 64gb uk version phone, they said it was fine and is 4g compatible..anyway recieved my microsim, but im not getting 4g only 3g and H...they said i shud be getting it any ideas ? ta, anyone got any settings that i could try..ta