Here’s how to register for one day Smart/TNT unlimited texting.
Go to Write Message on your cp.
Type 15 and then send to 258.
That’s it! You will receive a message like this, “You’re registered to P15 1 Day Unlimited Texts. Enjoy unlimited Smart/TNT texts valid for 1 day.”
Just don’t forget to maintain a P1 airtime load.
I was not so aware of this feature since I’m most accustomed to using AllTx20 and AllTxt10. I only came to know this when a girl friend informed me.