Bought a phone in Bangkok and I am not sure how it was unlocked but the Thai SIM card showed the edge symbol.

Now that I am in UK the E will not show up nor will it work on my tmobile prepaid SIM. My friends with iPhones get the E symbol to show up no prob so when I swapped their SIMs in I expected the same... still no E symbol.

Is there any way to fix/activate Edge? I have tried all the the APN/usernames I could find online.

Thank you!