Using WiFi and Internet, you can make free calls or enjoy cost savings on your Nokia WiFi-enabled phones. There are a few service providers in Singapore today who offer VoIP services.
SingTel's Mio
Visit http://home.singtel.com/mio/ for more information.
StarHub's Pfingo
Visit http://www.pfingo.com for more information.
SunPage's Internet Call
Visit http://www.sunpage.com.sg for more information.
VoIP feature is supported in Nokia N80 Internet Edition, N95, E61, E61i, E65 and E90
Nokia and Gizmo can quickly install the Gizmo software, after that all you need is a WiFi (Wireless LAN) connection and a Gizmo account to make Internet calls for just pennies a minute anywhere in the world. It doesn't matter where you are or where you call to, there are never any roaming or out of network charges!
Key Features :
Chat with Gizmo, MSN, AIM, Yahoo and Jabber contacts. Call any number and Gizmo contacts from your mobile phone at ultra low costs. See who’s online and available at any time.
Download for free
More details, User Guide, QuickTour and Troubleshooting can be found here.