We use cookies to help improve how this site works and the services we offer. By continuing to use this site without changing your cookies settings you agree to our use of cookies. To find out more about how this site uses cookies and how to disable them visit our cookies policy. Close Message

Trust Pilot Rating

Save with Mobile VoIP

Look professional and never miss a call with Vonage Extensions® for your mobile

What is Mobile VoIP?

Mobile VoIP uses an internet connection to offer significantly cheaper calls that with a traditional mobile phone line. With the Vonage Extensions mobile VoIP app, you can call cheaply or even for free as long as you have an internet connection. Call quality on your mobile is exactly the same, and mobile VoIP even allows you to make cheap international calls.


Stay connected

Have calls to your UK business landline number ring on your mobile at no extra charge, no matter where you are.

Look professional

Choose to show your business landline when you make calls from your mobile.

Never lose signal

Make and receive calls on your mobile over WiFi when 3G or 4G aren’t available. The perfect solution if you experience poor mobile signal at home or work.

Vonage Extensions®

The Vonage Extensions mobile app lets you use your mobile through your internet connection, making cheap or free calls anywhere as long as you’re online.

  • Answer business calls anywhere – calls to your Vonage UK business landline number ring on your mobile at no extra charge.
  • Put your best number forward – chose to show your Vonage business number when you make calls from your mobile.
  • Unlimited calling – Vonage calls plans from £8.50/month.
  • Wi-Fi calling – Poor mobile signal at home or at the office? Make and receive calls wherever you have an internet connection.
  • Stay in control – manage your availability on your mobile with ease.

The Vonage VoIP mobile app is bringing all the benefits of VoIP calling to you, wherever you are, with no line rental and no lengthy contracts.

App Store
Google Play

Our FREE mobile app - Vonage Extensions®

Our FREE mobile app - Vonage Extensions®
Vonage Extensions lets you share your Vonage call plan with up to two smartphones, so you can make calls on your smartphone at no extra charge. Simply download the FREE Vonage Extensions app to your smartphone and enjoy unlimited calling on your mobile. Calls included in your call plan can be made from your smartphone. So you can make unlimited and inclusive international calls to up to 68 countries from your smartphone.

Case Study

No matter where in the world Jayne's Blinds happen to be, they always have a local presence. Find out how it can be done.

Jayne's Blinds - Small Business Case Study
Jayne's Blinds uses Vonage virtual numbers to give it a hyper-local presence in 8 cities across the North.
See Case Study

Case Study

See how BiA Research was able to improve business efficiency by turning their mobile into a business landline.

Robin Shuker - BiA Research
Robin Shuker, Managing Director of BiA Research, tells us how Vonage's telephony services have helped him to run his company more efficiently. Vonage allows him to receive business calls on his mobile and helps his market research company to make calls to Asia at a low cost. Robin Shuker recommends Vonage to everyone looking for the best telephone system for small businesses.
See Case Study