sim cards
 

As tmobile and orange under ee
Anybody know if I can use my tmobile contract sum in orange pay as you go Nokia 610
as alot cheaper yo buy on orange

Any info would be great

once phone is open to all networks then be no problem, some are from factory others need puk no. or visit local mobile shop to unlock it from £5-£20 going rate by me :)

Phones bought from carphonewhorehouse are all factory unlocked.

If it isn't unlocked, your own network provider can do it - just call them. orange did it for me on an Iphone4 a few months ago.