Smart Communications has changed it rates for time billed mobile internet. Instead of the previous rate of Php10 for 30 minutes, it is now charging Php5 for fifteen minutes. While the rate per minute is still the same, it does benefit users a lot. If you go online for five minutes to check out a website or your email, it will not cost you Php5 instead of Php10. If you go online for 40 minutes, it will not cost you Php15, instead of Php20.
Globe Telecom has been using the same Php5 per 15 minutes for several years now.