I have an issue when trying to sign into twitter via the accounts app or the stock twitter app. It returns a error "unknown error. Try again later."

Any ideas.. Ive carried out a full reset of the devices but i haven't yet reflashed.

It was working correctly before it went into the Nokia Care Centre. The n9 has had its casing replaced but is now playing up!

Any help much appreciated

SOLVED: you need to have a working sim card to sign in to twitter