have seen a phone advertised and second hand which says its sim locked t mobile, does that mean that I can put my own sim in which is on t mobile network and the phone will work as I want to eepwn number and still be with t mobile, sorry but I have never done this before and am a bit thick when it comes to mobiles
After thought. The sim card sizes may be different but you can have them cut or buy an adaptor for this at any phone shop at a small cost £5 to £10 was what I was quoted.