Vonage® Extensions® App

You can take Vonage home phone service with you—make and receive calls on your smartphones, plus get free Wi-Fi calling, too (standard data rates apply).

Take your home phone anywhere you use your smartphone

Take advantage of Vonage's great calling plans by making calls with the app on your smartphones. Plus, you can answer calls made to your Vonage phone number from almost anywhere using Wi-Fi or 3G/4G (standard data rates apply).


  • You can answer an incoming call to your Vonage number as if you were at home. All calls to your Vonage number, will ring your home phone and the app.
  • Take advantage of your Vonage calling plan when you are on the go.
  • You will know an incoming call is to your Vonage number or to your mobile number.
  • Calls you make from the app will use your home Vonage number as your caller ID.
  • The app will use your phone’s contact book to provide a caller ID, so you know who is calling.
  • Make calls on 3G/4G or use Wi-Fi when you are in poor cell coverage areas (standard data rates apply).

This is a patented Vonage feature. View patent information.


Learn more about our Vonage® Extensions® App.

  • What is the Vonage Extensions app? And how do I set it up?
    • The Vonage Extensions app lets you use your Vonage home calling plan to make and receive calls on two smartphones.

      The app can be downloaded from the Apple store or Google play store and linked to your Vonage service. You can then make and receive calls from the app over a Wi-Fi or 3G/4G connection (standard data rates apply).
  • How does the Extensions app differ from the Vonage Mobile® app?
    • The Vonage Extensions app is for current Vonage plan customers to use on their iPhone® or Android™ device. It lets you use your Vonage plan on your smartphone, so you can get the same low rates on the go.* And it lets you receive calls on your smartphones, too.

      The Vonage Mobile app for iPhone® and Android™ devices lets everyone—including people without a Vonage plan—make free voice and video calls, and send free texts, video messages and photos to anyone with the app, anywhere in the world.** You also get great low rates on international calls to anyone who doesn’t have the app.

      *Calls made outside of Wi-Fi networks will use your data plan and, depending on your data plan, data-usage rates may apply.
      **Standard data rates may apply.
  • Can I use the Extensions app on more than one smartphone?
    • Yes. You can download the app to two smartphones and link them to your Vonage home phone service, free of charge. The app is available on iPhone® and Android™.
  • How do I make a call with the app?
    • You just need to launch the Extensions app on your iPhone® or Android™ device, and then select the number you want to call. The app automatically imports all your contacts from your address book, so you’ll have them at your fingertips.

      The Extensions app works on 3G/4G networks and over Wi-Fi.*

      *Calls made outside of Wi-Fi networks will use your data plan and, depending on your data plan, data-usage rates may apply.
  • How do I make international calls using my Extensions number on a landline or regular mobile phone?
    • 1. Dial your access number (displayed in your Online Account).
      2. Enter your Extensions® PIN (same as your Security PIN).
      3. Dial the international destination number, including 011 plus the country code.

      You can also make international calls over 3G/4G (standard data rates apply) and Wi-Fi networks using the Extensions app for iPhone® and Android™ devices.

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¹Unlimited Calling is based on normal residential, non-commercial use. A combination of factors is used to determine abnormal use, including but not limited to: the number of unique numbers called, calls forwarded, minutes used and other factors. Subject to our Reasonable Use Policy and Terms of Service.

HIGH-SPEED INTERNET REQUIRED. VALID FOR NEW ACCOUNTS ONLY. RATES EXCLUDE INTERNET SERVICE, FEES AND TAXES. Extensions® permits inbound and outbound calling on up to two additional registered phones at the home calling plan rates. If you subscribe to plans with monthly minutes allotments (for example, U.S. & Canada 400), all call minutes placed from both your home and registered Extensions® phones will count toward your monthly minutes allotment. Extensions® calls made from mobiles use data or airtime and may incur surcharges, depending on your mobile plan. The number transfer process takes approximately 10 business days from the time you confirm your transfer request. Alarms, TTY and other systems may not be compatible. Vonage 911 service operates differently than traditional 911. See www.vonage.com/911 for details.

© 2017 Vonage