# Non-VoIP number

A non-VoIP number is a line from a mobile carrier (a physical SIM), which passes the line-type checks that reject internet-based numbers.

## What is Non-VoIP number?

A non-VoIP number is a line from a mobile carrier (a physical SIM), which passes the line-type checks that reject internet-based numbers.

## When you need one

For strict apps: WhatsApp, Google, PayPal, Uber, banking, dating. SMS Nitro labels these pools as physical SIM in the catalog.

Source: https://smsnitro.com/glossary/non-voip