• New user LIMITED offers *: Get 300 credits after registration!
  Duo Voice is a free calling app that offers full Free International calling and quality of phone call locally and abroad. Use this WiFi calling app and enjoy FREE calls worldwide with any real phone number without worrying about expensive bills! Call for free and get in touch with people around the world!
  (1) 100% FREE international phone call more than 230+ countries or regions.
  (2) New user bonus +300 credits Multiple ways to earn app credits to make FREE phone calls. (watch videos, complete work, invite friends and more.)
  (3) Duo Voice uses an Internet call (aka WiFi call, IP call, or VoIP call). Call your friends WHERE you are while you are under WiFi, 3G, 4G or 5G.
  (4) Server worldwide to ensure the best voice quality.
  (5) Unlike international calling cards, Duo Voice does not use your cell minutes.
  You can call your loved ones without worrying about expensive bills. Download VOIP Wi-Fi calling online app and enjoy FREE calls worldwide around any mobile and landline! Call any cell phone, local or overseas today!

WHY USE DUO VOICE:
• Free International Calling
Duo Voice is a 100% Completely FREE international phone call app with no extra charge at all! Duo Voice can reach any mobile or landline number in more than 230+ countries or regions! If you want to make FREE calls to USA, India, Nigeria, Pakistan, Bangladesh, Saudi Arabia, either FREE or at low cost.

• Clear & Stable Calling
Duo Voice uses real telephone lines, which means we can guarantee a good crystal clear voice call quality, such as telephone calls from a landline! Duo Voice automatically detects and adjusts your connection speed to make sure more stable calls.

• Earn credit
There are millions of ways to earn credits in our app, for example: daily check-in, friends invitations, watching ads, etc. To enjoy the best service calling for FREE, simplest just need a tap to earn FREE credits.

• High Quality Voice Call
Voice calls are sent to high quality Duo Voice’s dedicated VOIP network so that you do not need to worry about bad reception, volatile calls or drops. Our system always finds the best telephone line (the best voice quality) in your neighboring region when you make the call.

Duo Voice - Connecting you to your international friends and family anywhere. Start your FREE or low cost or cheap calls to India, Nigeria, Mexico, Pakistan, United States, United Kingdom, Canada, German, UAE, Saudi Arabia and Bangladesh today. Enjoy FREE Wi-Fi calls!

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