I purchased a Nokia 5210 from eBay recently.When I tried to put off the
keyguard lock it asked me for a security code.I can't take it off unless I
take out the battery(You can imagine how frustrating this is everytime!)
I contacted the seller and he gave me a default code 12345 but it didn't
Does anybody know what I can do?I've tried the codes 0000,9999(They don't
work either)

See More: Keyguard security code Nokia 5210?