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VoIP over mobile phones give consumers the possibility to save on their phone bills.

Mobile internet technologies will be regularly used to carry voice calls within the next five years.

VoIP will pick up about 250 million users by 2012, despite very few people making use of these services now.

Dean Bubley, noted: “3G networks are increasingly capable of supporting VoIP, for both traditional mobile operators and independent internet-based VoIP challengers.”

But while mobile operators may be worried about losing call revenues to IP phone services, Mr Bubley suggested that they will finally use IP telephony themselves.

He said that VoIP will allow them to save on their cost of running their networks and offer them opportunities to launch new features for their services.

Now IP-Calls Are Available For Palm OS Devices
Make cost-effective calls to any destination. Call Skype users to their PCs.
Now Skype is available for Palm OS Devices and you can make your IP phone calls round the world also when travelling.
You can try out this for free.
IM+ for Skype is a totally mobile application that enables voice and text communication with other Skype users and provide cost-effective calling to mobiles and landlines.
It takes just a moment to get it to run.. Sending messages is as simple as typing SMS messages. To use IM+ for Skype you don’t need WiFi. The application works in any network.
IM+ for Skype runs on these devices
Symbian S60 v3 mobile phones
Windows Mobile Pocket PC
Palm OS
BlackBerry handheld devices
iPhone
Java phones
IM+ for Skype is a service and allow users to make and receive calls for cheap rates. See who is online and chat with Skype users.
Use IM+ for Skype atANY wireless network
ANY mobile device
ANY destination
IM+ for Skype is from SHAPE Services, a Germany-based company, well-known for its mobile IM clients. They charge a small fee for the application, and no recurring monthly subscription fee. By purchasing IM+ users are entitled to all software upgrades and updates.

Jim Price
VoIP and Cellular Phone Blog

IM+ for Skype is a real enrichment for your Palm OS Device to call via VoIP to your friends.