SLYNUMBER 4+

SLYNUMBER is the easiest way to add a second phone number to your phone - no SIM card or new device is needed. Just download the app and start calling and texting today!

SLYNUMBER is the best second phone number app simply because our mobile numbers work everywhere.

SLYNUMBER is the only mobile app on the market to offer real mobile numbers. No SIM card is required.

It has all the features you need
SLYNUMBER offers state-of-the-art features that allow you to use your new number like any other mobile number, and more!

A private phone number
SLYNUMBER is not linked to any of your personal information, so you can remain anonymous.

Caller ID with name
Our app identifies the caller’s name, in addition to the ID, with every call you receive.

Call spam blocking
Say goodbye to unwanted callers and always know who's on the line with SLYNUMBER.

Voicemail with custom greeting
A dedicated voicemail for your new phone number. with a personalized voicemail greeting.

SLYNUMBER is AI powered
SLYAI utilizes the best AI technology available. It is your personal conversation companion conveniently embedded in the SLYNUMBER app. Just ask and it will answer. It offers a uniquely personalized experience, like having a really smart-friend, the more you talk to it the more it gets to know you.

Activate any service
Activate any service that requires SMS verification and seamlessly integrate SLYNUMBER with your favorite messaging apps and online services.

We protect your privacy.
SLYNUMBER provides you with a second phone number that protects your privacy and helps you maintain your anonymity online. SLYNUMBER is a personal number that is not associated with any name, address, or billing information. No reverse look-up tool can reveal the owner of the number. It is completely anonymous