I know I'm not the only person on this forum to have an issue with registering on the network, I'm in the UK on Vodafone, it works fine is certain areas, but when on the move it's super unreliable, and you couldn't really use it as your main phone as you don't know if it's going to work at all!
If someone has come across a fix for the radio on this phone I would love to know what it is - it would be quite a good phone if it werent for this annoying problem.
Mike