New SIM has arrived for new phone (Energizer E20). Phone starts with 'Searching, Insert SIM' then goes to 'Invalid SIM, Insert SIM'. Tried taking SIM out and putting back in (definitely in the right way, contacts down, etc).
PS: I think the first SIM you sent me had probably expired because we were trying (and failing) to get my original phone unlocked for over 30 days. Could that effect the new SIM?