Why Use DuoVoice
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Free international calls
Enjoy high quality free calls to landline and mobile to most countries and areas in the world.
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High quality calls
DuoVoice can guarantee excellent call quality. Our system will always search the best telephone line at your nearby region.
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Unlimited call credits
Various free call credit offers: watch videos, complete tasks, invite friends and more.
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Call any mobile or landline
Your friends and family don't need the app for you to call them. DuoVoice just works.
Contact Us |
If you have any questions or need to delete your account and data |
Contact us via duovoice@mmcallsapp.com |