I found a blackberry last week and tried to contact the owner to give it back. No one got back to me and then the sim card was locked.
After a week of trying I thought I would keep it and it worked fine for a day, with SMS, calls, internet and BBM working.
Now although the BBM and internet still works, whenever I try to send a text a little clock appears and then comes up with the message "retries exceeded".
When I try and make a call it says "no service currently available".