Guides
Short, practical explainers on receiving SMS online and using temporary numbers safely.
How to receive SMS online without a phone
A step-by-step guide to receiving text messages and verification codes online for free, without a SIM card or your own phone number.
Read guide →What is an OTP (one-time verification code)?
Understand what OTP and SMS verification codes are, why services send them, and how to receive them online for free.
Read guide →Why didn't my verification code arrive?
The common reasons an SMS verification code never shows up on a free public number, and what to try instead — from numbers that stopped receiving to services that reject shared numbers.
Read guide →Are free SMS numbers safe to use?
An honest look at the risks of public temporary phone numbers: what they are genuinely useful for, what you should never use them for, and why.
Read guide →Which services work with free SMS numbers?
Which apps and websites usually accept a free temporary phone number for verification, which usually reject one, and how to tell before you waste time.
Read guide →How to choose the right country for SMS verification
Why the country of your temporary number matters for verification, when a foreign number will be rejected, and how to pick one that works.
Read guide →