Simplified Sim free -Second Phone Number

Stop paying for expensive cell minutes and text messages! With DuoNumber free calling & texting App, you can text any one using WiFi and 3G/4G data networks without using any cell minutes. You can also do video calls to any one who exists in the app.


Why choose DuoNumber over other services


No Hardware required

Once the app is installed user can use their existing phone and gain essential with out any new hardware.


Cheaper Cost and Work Everywhere

Cheaper than purchasing a SIM card. Work anywhere in the world.


Friendly UI and UX

User friendly Interface for better navigation . Highly Responsive.


Magic Of SMS and Chat

Send SMS / MMS. End to End Chat, Audio Messages and Video Calls.


We facilitate the creation of strategy and design

Interactively transform magnetic growth strategies whereas prospective "outside the box" thinking.

You can download the app from App Store

DuoNumber - Cost Effective Alternate Phone Number for SMS/MMS

app store link button
google store link button

Free to download and try for 7-days

A unified messaging system


Simple and Perfect Solution for owning a secondary number

Duo Number provides the flexibility to own an alternate secondary number that can be used in conjunction with your existing number without a sim card and any other expensive plans.