There are two modes of FSMS that you can use for sending SMS.
When you see an earth-like icon above, it means you are currently using online mode. This mode uses our servers to send message to Philippines. This mode requires internet to send.
If you see a SIM-like icon above, it means that you will send using your SIM card. This mode doesn't need internet connection but only SIM load/credits.
To switch modes just tap or click the sim/online icon above..