What is iPhone VoIP and SIP Client?

iPhone VoIP and SIP client apps enables customers to make free phone calls to other VoIponMobile users or very cheap phone calls to anyone else in the world from your mobile phone.

If you have access to a WiFi connection, you can save money by using the Internet to connect your call instead of using your iPhone minutes. No roaming or out-of-network fees. Make your calls from anywhere in the world to anywhere for just a few pennies a minute. Simple to configure, inexpensive to use

iPhone SIP Client Apps

There are several software developers that have released voip apps or SIP clients for making phone calls with the iPhone. Below you can find iPhone SIP Client apps that are tested with VoIPonMobile.


Features of the Acrobits Softphone client include push notifications on incoming calls, bluetooth headset and speaker phone support, call recorder and player, multiple SIP account support, phone contacts integration and a detailed call history. It is easily set up by the user and offers a logical layout. The Acrobits Softphone app can be downloaded from iTunes with WiFi and 3G network capability and costs $ 6.99.

Click here to learn more about Acrobits.


Bria softhpone from Counterpath is a SIP-based phone for Apple iPhone, iPod touch, iPad that uses a Wi-Fi or 3G connection to make and receive calls. Using iPhone's existing contact list, Bria iPhone Edition facilitates easy and effective communication management with an intuitive interface that accommodates multiple calls. Call functionality includes the ability to swap between two calls, merge and split calls and perform attended and unattended transfers. Bria iPhone Edition incorporates advanced security settings which allow for secure call signalling and audio encryption. It also contains enhanced audio features including G.711, G.722, GSM, iLBC and an optional G.729 codec and costs $7.99

You can download Bria Softphone app for Apple iPhone here

Click here to learn more about Bria.


Zoiper is another free mobile VoIP software, allows you to talk via your handset's internet connection to other phones with VoIPVoIP at no extra cost.

Zoiper is a very simple to use SIP and IAX softphone for the iPhone, iPod Touch, iPad supporting GSM, G.711, Speex, and iLBC codecs.

Zoiper is also available on the App Store for free to use on iPhone, iPod Touch or iPad

You can download Zoiper here.

Click here to learn more about Zoiper.

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