Vopium has launched its mobile VoIP service in the UK with the promise of low-cost and free international mobile phone calls.

The service is a free software program that uses mobile VoIP and Wi-Fi technology to reduce the cost of international phone calls on mobile.

Vopium integrates directly with the address book on the phone, automatically re-routing all international calls via the least expensive method available.

The service also offers users the ability to send text messages (SMS) abroad at what it says are low rates – for UK users, 9p.

Callers are also able to make free and discounted calls using Vopium Wi-Fi.

Tanveer Sharif, CEO of Vopium

Tanveer Sharif, CEO of Vopium, said: "We are delighted to be able to offer low-cost and free calling options to UK mobile users who want an affordable and convenient way to make international calls."

Users have to instal Vopium for free onto their mobile handset.

To get started, mobile subscribers then have to either visit the Vopium website or send a text message with “Get” to 07781480717.

The company said that once registered, all new users receive 30 free minutes of talk time and 100 free SMS.

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