Mobile VoIP company fring has added support for phones and PDAs running Windows Mobile 5.0 and 6. Since fring works with any internet connected device, that means you can use the software to make free phone calls from your PDA, even if it doesn't normally have telephone capabilities.

In a nutshell, fring lets you make VoIP calls using your 3G or WiFi connection. You can make calls to anyone on Skype, Google Talk, MSN Mesenger, SIP, or Twitter. You can also call other mobile phone users running the fring software, or you can use services like SkypeOut to make phone calls to any phone number without eating into your phone plan's voice minutes.

Before you download fring software, you'll be asked what type of phone or Windows Mobile devices you're using. For some reason, a number of devices, including the Dell Axim X3 are listed, even though they do not run Windows Mobile 5.0. And we've confirmed, fring will not work on devices running Windows Mobile 2003SE or older.

[via StartupSquad]