Does a mobile phone that is locked on T-mobile UK also accept T-mobile Sim Cards from other countries?

I want to use it in the Czech Republic where there is also a T-mobile operator.

Does a mobile phone that is locked on T-mobile UK also accept T-mobile Sim Cards from other countries?
probably not
Reply:Probably not, each network provider has a 5 digit code of its own and t-mobile uk is different to other countries so you'll need to have it unlocked before it'll work.