USSD Following are the USSD codes you can dial to activate various services; USSD Function USSD Code Check own balance *123# Recharge for own number *122*PIN# Recharge for other Smart numbers *120*PIN*MobileNo# Balance Transfer *131*MobileNo*Amount*123456# Language Selection *126# Check own number *134# Check- Date & Time *124# Call Me Back Request *151*MobileNo# Credit Me Request *152*MobileNo*Amount# Smart Easy Loan *129*10#