Talk 'N Text Call and Text Promo: TOT15 which is valid for 1 day allows you to call and text to Talk 'N Text and Smart user for a low-low rate, it's only rate .50 centavos.
To register you need a balance of 15 pesos or above and you can register anytime, for registration just go to your write message and type TOT15 and send to 4545.
If your registration was successful you can received message that you are successfully registered. To call, just follow the instructions received from talk 'n text after registration.