How to Unblock a Number in Samsung Duos Phone

Accidentally blocked a number in your Samsung Duos mobile phone? Here's a quick fix to UNBLOCK number:

To Unblock number in Samsung Touchscreen Phone:
Just dial the same no. and just touch the screen on the number you have dial then block the no. or unblock the no. will shown just do unblock the no.

To Unblock number in Samsung Duos Phone:
Go To message > Options > General setting > Block messages > Press DELETE to remove the number from list