Many times friends peep into inbox for reading personal messages and then we realize my SMS's are not safe in mobile. "SMS Lock" is the light freeware through which password is set in the form of pattern on screen. After installing enter desired pattern on screen and set as password. when ever sms comes and one clicks on inbox a screen pops up asking to trace pattern for unlocking viewing sms.
If pattern is entered wrong trace in red colour is displayed which
means pattern is wrong for unlocking