does any one know the security code to the prepaid samsung smooth I cant find it any where
typically the security code is the last four of the phone number it's programmed to. Typically. If not you can try simple stuff like 1111, 9999, 0000...etc etc.
Also, you may be able to reset the security code by doing over the air programming to the default last 4 digits of the mobile number. From the cell phone dial *228, press Send and then press option 1 when prompted to program the phone. You won't loose any data on the phone. It takes about a minute. Some phones will power cycle after this process. When the phone is powered back on, then the code should be reset.