VoIP for the iPhone - Services and Applications

Making Free and Cheap VoIP Calls over the iPhone

Have you considered VoIP for your iPhone? Many of you have been seduced by Apple's iPhone. One thing that will definitely improve your iPhone experience is to be able to make cheap, if not free, phone calls while using it. VoIP is the way to do that, and here are ways to make free and cheap calls on your iPhone to landline and mobile phones worldwide.

You can read more on the iPhone from our iPhone/iPod guide.

Woman talking on smartphone on street,smiling
Atsushi Yamada/Photodisc/Getty Images
Truphone is the earliest service to get VoIP on the iPhone. Truphone does really well here in terms of integration of the application with the iPhone interface and environment, and the quality of calls. The range of calling destinations at cheap is quite large, and the rates are interesting - around 3 pence (Truphone is British) to major destinations.
RF.com is an iPhone web application that works in 35 different countries to give users vastly expanded calling services wherever there is a cellular signal. A Wi-Fi connection is not necessary, unlike other iPhone VoIP solutions. With RF.com, you use your basic cell phone service, which is normally pinned down to your house, office or PC, to make calls while on the move using your mobile phone. You can also make voice calls to Skype, GoogleTalk, MSN Messenger, Yahoo! Messenger, and other IM-based voice calling services, even without an actual account with the service.

Vopium is a mobile VoIP service that offers cheap international calls through GSM and VoIP, without necessarily having a data plan (GPRS, 3G etc.) or Wi-Fi connection. If you do have any of the latter, you can make free calls to other users using the same networks. Vopium also offers new users 30 minutes free calls and 100 free SMS for trial.

Skype is late to the party but positions itself as one of the best. It offers traditional features like free calling to other Skype users, through 3G or Wi-Fi. Cheap calling to any phone worldwide can be done through SkypeOut, and received through SkypeIn. AT&T, the exclusive mobile service provider for the iPhone, at first blocked VoIP applications from operating with the iPhone, obviously for saving its interests since VoIP calls would be free or cheaper. Later on, after assessing consumers needs, they allowed VoIP over the iPhone and today, Skype can be used even over their 3G network.
Nimbuzz allows iPhone users to call for free over Wi-Fi, to another Wi-Fi phone or PC. It also supports voice and text chatting with other common instant messaging applications, a dozen of them.
Raketu works just like Jajah. No softphone is required. Some calls are free and the rates for the paid ones are quite low. You can buy prepaid credits for the call. Raketu's service also allow mobile users to send SMS and email for very cheap.


Sipgate offers a softphone that allows you to make free and cheap calls locally and internationally on your iPhone over any Wi-Fi network. Yes, you will need a Wi-Fi connection. This will allow you to by pass roaming charges. Sipgate is open to services from any SIP provider. The service gives every new user 111 minutes free.


iPhonegnome is a web-based service that, like Sipgate, lets you use your iPhone to make calls through any SIP-based service, or common services like Yahoo, MSN and Google Talk. Phonegnome users can be called for free, and credit from your required Phonegnome account are used for calling other people.