Of course there is a catch, you can only have the free access if you access the social streams via the SmartNet* app.
The free phones are Samsung Galaxy Pocket and Netphone 501
Samsung Galaxy Pocket
2.8” QCGA LCD Display
Android 2.3 Gingerbread
2MP Camera
3GB user memory microSD
Bluetooth 3.0, USB 2.0, 802.11 b/g/n Wi-Fi, an accelerometer, digital compass
Netphone 501
TFT resistive touchscreen, 3.0 inch display
2MP Camera
Wi-Fi, Bluetooth v2.1 with EDR, microUSB v2.0
microSD 2 GB
*Facebook, YM, and Twitter will be unlimited if used through the app, SmartNet. For mobile internet, you get charged P10 for 30 minutes in a mobile browser. Facebook or Twitter apps will be charged P10 for 30 minutes.
From Smart