Serial number lenght. topic

Hi folks. Im afraid I bought a stolen sgs3 :(. Could you tell me how long is your serial number? Mine is 17 numbers long which is quite strange since i have read it only has 11 digits. You can find it under settings -> about phone -> phone info. I need only the lenght of it.

Wysłane z mojego GT-I9300 przy użyciu Tapatalka