Duo Phone Number is a calling and texting app that provides users with a private 2nd phone number. This app allows you to make calls and send text messages globally, without the need for a traditional registration process. With Duo Phone Number, you can have multiple phone numbers on your smartphone for personal and work use.

One of the key features of Duo Phone Number is the ability to get a phone number and make free phone calls and send free texts with credits. This makes it a cost-efficient option for global calls to over 200 countries and regions. The app also offers local phone numbers in the US, Canada, and the UK.

Duo Phone Number ensures great call quality with HD voice over cellular data and wifi. It also has caller ID enabled and supports two-way SMS/MMS. With this app, you can get a 2nd private phone number to protect your own number and enjoy cheap international calls to various countries.

Additionally, Duo Phone Number offers a premium subscription that provides an ad-free experience and extra credits for free calls and text messages. The app is available for download on the iPhone platform.

Please note that the developer of Duo Phone Number is JUSI PTE. LTD. and the app is licensed as free. For more information, you can visit their privacy policy and terms of use on their official website.