"Mobile phone number portability cannot be avoided by both regulators and operators. It is bound to happen soon. We might as well prepare for it now," Santiago, former NTC chief, pointed out.
Santiagos remarks came shortly after new federal regulations came into force in the United States allowing mobile phone subscribers in the 100 largest metropolitan areas to retain their phone numbers even if they switch carriers.
Apart from the US, at least a dozen countries now allow the portability of mobile phone numbers.
Santiago said "portability" could yet become the next catalyst for a fresh surge in both consumer and capital spending for mobile phone services.
He said consumers would be the biggest beneficiaries of portability, adding that "in order to discourage switching, operators would be forced to quickly improve and add more value to their services."
"Operators will be compelled to further enhance coverage and reduce dead spots. They will also be more aggressive in providing absolute customer satisfaction," he said.
He added: "Competition will intensify as operators try to offer more services at cheaper rates in order to discourage switching."
Santiago said portability might be easier to implement here because major operators use the same technology the global standard for mobile (GSM) communications. This means subscribers do not have to buy new handsets if they decide to switch carriers.