KUALA LUMPUR, Feb. 26 -- Are you a tourist in Malaysia? Your prepaid SIM card from Malaysian telcos will only be valid for a maximum of three months, based on the regulator Malaysian Communications and Multimedia Commission's (MCMC) new rules.

Under the new rules that were released and came into effect today, here's what you should know as a tourist:

1. You must register your prepaid SIM card if you are using a Malaysian telco's prepaid services

To register the prepaid SIM card:

According to the rules, the telco will verify where you are currently staying, for example, by referring to a hotel reservation or booking form.

You can get your prepaid SIM card registered at the telco's service centre or an authorised dealer.

As a non-Mala...