For some unknown reason, I cannot receive calls and smses as well as make calls and send smses. When I try it keeps saying call failed. When I check for airtime SUPPLEMENTARY SERVICE ERROR - GENERAL ERROR. Could you please tell me what does that mean. I have put my sim card into another. Phone and was able to make n receive calls and smses. But when I put my sim into my blackberry I am not allowed to. My blackberry is vodafone I am currently using a cellc sim card in it. The phone has worked fine from the time I bought it in december 2011 till september 2012.