Im using PLDT LL+ sim card, p250/month add-on to your regular landline. It uses Smart signal wherever you are in the Philippines. Unli call TO any manila telephone line wherever you are in the Philippines. Unli call FROM any manila line wherever you are in the Philippines. Meron na sya NDD charge if you call TO other area code. Meron na rin sya NDD charge if they call you FROM another area code.