USA Phone Numbers 2nd Number is a free Android app developed by VectorWaves. This app provides users with temporary United States phone numbers that they can use online instead of their real phone numbers. The app offers a variety of available and constantly changing phone numbers to use easily and safely in any website or app that users don't trust or want to test for the first time before using their real details.

The app is designed to help people hide their real phone numbers in online activity and receive OTP (One Time Password) Verification codes while signing up for or using online services, apps, and websites. With USA Phone Numbers 2nd Number, users can hide their personal phone numbers and gain access to the websites, apps, or services they want without being at risk of providing sensitive information about themselves to untrusted parties.

One of the key features of the app is fast and instant SMS receiving. As soon as the service, website or app sends an SMS, it will be available almost instantly in the app.