Skype has launched a 3G VoIP application for the iPhone. Skype 2.0 VoIP is now on the iPhone with the capability of making calls over 3G. Initially the users could only use VoIP application over WiFi. With Apple lifting restrictions on iPhone VoIP applications that run over a 3G network, developer agreements were amended by Apple to enable VoIP apps for the iPhone 3G in the Apps Store. VoIP 3G iPhone applications are being offered by VoIP providers such as Fring and iCall.

The company delayed the launching of 3G VoIP applications in order to improve the quality of audio prior to releasing the new version. This application provides high audio quality even with low band-width. This gives an advantage in low band-width situations. One of the new attractive features is the call quality meter or the call quality indicator. It has a grading system consisting of colors. The call quality meter changes colors to red, yellow and green depending on the coverage, with red showing less coverage and green indicating good coverage. Start up time has also been improved in this version and the access has been made easy and fast from iPhone home screen’s dial pad.

As always, folks have great expectations for this new application from Skype. However, Skype will have to work on keeping the prices within affordable limits. They are planning to charge for Skype to Skype calls next year, although the prices will be minimal. Skype is expected to give a good value for its paid products.

CallGlobal is similar to iCall with its registration process. After it sets up your account and number, you may make CallGlobal to CallGlobal calls, VoIP calls and direct calls. CallGlobal to CallGlobal calls are free, while all other calls cost a certain rate per minute.

iCall is another voip app that can be downloaded from the App Store. It allows you to link to your Facebook account. After the main start-up screen and accepting the user agreement, iCall will prompt you to select an account type. It offers a variety of accounts including a trial, free-use and paid use. iCall will then place a verification call and your account will be ready to go.

Fring is another popular mobile VoIP client and it allows you to integrate other popular social outlets such as Skype, ICQ, Twitter and AIM. Fring provides an excellent way to keep most of your social networking and instant messaging all bundled in one app. You can make free calls to any other VoIP, Fring or Skype user. Fring offers a special version for visually impaired users as well.

Skype is undoubtedly the most popular VoIP app of all. To make calls, simply select someone on your Skype contacts list and you’ll be talking in no time. On top of voice calls, Skype for the iPhone also allows for chats just like the desktop app. It also permits the user to set his or her status and profile information.

Skype also offers a range of subscriptions that make international calls remarkably inexpensive. You can either pay $5.95 per month to call unlimited landlines in one country of your choice, or $12.95 for any country in the world. This is definitely cheaper than normal rates.