What can i do with the phone?

[progen8]

Bought a Nokia 7210, from a market stall, and it worked fine for 4 days. I have eventually found out that the phone IMEI is barred on all UK networks.
What can i do with the phone?

is it possible that people have phones barred in thier countries, that would work in the UK, and that my phone would work in thier countries ?.

[ALMOGAVER]

INDEED.
Providers across contries, don't communicate with each other...