Recently, SMRT implemented a shadow-capping (unannounced) over their unlimited data plans or subscriptions on plans below 999. So the solution to this is for us to use a VPN. Using this VPN is not illeal since there is no law acting upon against it here in the Philippines.
This is what I am using right now. As long as posible, use a vpn with a Philippine server or atleast near our country to make the connection faster comparing to other server
Use at your own risk. Sa akin wala naman blocking.