Smart Communications Inc. (SMART) just launched a new service that enables their subscribers (SMART Buddy and SMART Gold) to make unlimited Smart to Smart calls at any time of the day.

The service is called Smartalk and it does not require any changes in SIM or cell phone number. It comes in two variants, the first is “Smartalk 100,” which is 100 pesos for 5 days of unlimited calls and the other one is “Smartalk 500,” which is for 30 days.

For prepaid subscribers, just text Talk100 to 6400 for a Smartalk 100 package and Talk500 to 6400 for a Smartalk 500 package. The payment will be deducted from your prepaid load and you need to have a 1 peso maintaining balance.

For postpaid subscribers, just text Talk500 to 6400 to purchase the package, and the 500-peso charge will be billed on top of your monthly service fee (MSF).

To make a call using the Smartalk unlimited package, you just need to dial *6400 plus the 11-digit subscriber number being called, i.e., *640009181234567.

Smartalk will be offered nationwide from June 26 until September 30, 2009.