2nd Line : Second Phone Number

Flux AI Labs

In-app purchases

About this app

2nd Line gives you a private second phone number for everyday communication, business use, travel, online forms, and situations where you prefer not to share your personal number.

Choose a virtual phone number, keep your real number private, send SMS, make calls, receive messages, and request one-time SMS codes from a simple mobile app built for clear, controlled use.

What you can do with 2nd Line:

Get a second phone number from supported countries
Choose local, mobile, or toll-free numbers when available
Send and receive SMS from your active number
Make outbound calls using your virtual number
Receive incoming calls when supported by your number
Use short-term numbers to receive one-time SMS codes
Manage your numbers, messages, calls, and usage balance in one place
Keep personal and work communication separate
Private by design

Your real phone number stays protected. Use a second number when you want a separate line for work, online listings, travel, projects, or personal privacy. 2nd Line helps you communicate without exposing your primary phone number everywhere.

One-time SMS codes

Need a short-term number for an incoming verification SMS? 2nd Line includes a dedicated one-time code feature. Select where you want to receive the code, choose a country, and view incoming SMS codes directly in the app when they arrive.

Availability is not guaranteed for every service, country, or provider. Some third-party services may block virtual or temporary numbers.

Flexible usage

Numbers are managed through monthly or annual plans. SMS, calls, and one-time code requests use tokens, so you only spend usage credit when you actually use communication features.

All purchases are processed securely through Google Play.

Built for responsible use

2nd Line is designed for lawful personal and business communication. Spam, harassment, fraud, illegal activity, bulk account creation, financial abuse, and misuse of verification systems are strictly prohibited.

To protect the platform and its users, some features may require real phone verification. Usage limits, abuse prevention checks, and compliance controls may apply.

Important notes

2nd Line cannot be used for emergency calls.
Number availability varies by country, region, provider, and inventory.
SMS delivery and one-time code delivery depend on carrier and third-party service acceptance.
Subscriptions and token purchases are managed through Google Play.
You can request account deletion from inside the app or through the support page.

What’s new

Performance improvements and stability enhancements.