Real mobile numbers for testing SMS flows in your app
If you build an app that sends SMS codes, you need to see those codes arrive on real mobile numbers in the countries your users live in. SMS Hallo rents real non-VoIP mobile numbers in 181 countries with a private inbox, so developers and QA teams can test sign-up, OTP and 2FA flows end to end. It is meant for testing your own product, not for creating accounts in bulk.
What to test with a real number
Emulators and test modes of SMS providers skip the parts that break in production: whether the message is delivered to a real mobile number, how long it takes, how the text looks on arrival, and whether your code is easy to read and copy.
With a real number you can check the full path: phone number input and validation, the SMS or voice code, the resend timer, error messages, and the login that follows.
It is also worth testing the unhappy paths: an expired code, a wrong code entered several times, a resend requested too early, and a user who changes their number in settings. Seeing how each of these behaves on a real handset-style inbox often reveals copy and timing problems that unit tests miss.
Testing across countries and formats
Phone number handling is full of edge cases: country calling codes, trunk prefixes, different lengths and national versus international format. A number in each target country helps you confirm your input field accepts local mobile numbers and normalises them correctly to international format.
SMS Hallo numbers are in each country's local mobile format, and the price is the same in every country, from $1.80 per month on the 12-month plan.
Useful dashboard tools for QA
The SMS inbox detects codes and lets you copy them with one tap, which speeds up manual test runs. The browser dialer and call log let you test voice-call verification and support lines. Each number can also send up to 500 SMS and make 1,000 minutes of calls per month, useful for testing two-way messaging.
Keep test numbers stable
Test accounts often need to log in again weeks later. Renew test numbers for 1, 3, 6 or 12 months or use auto-renew, so your test users keep working. After expiry a number may be given to someone else.
If a number does not work for the flow you rented it for, you can swap it for free within 7 days (up to 3 times) or request a 100% refund within 7 days. Unused numbers can be refunded within 7 days with no questions asked.
What this is not for
Use SMS Hallo numbers to test your own app, or apps you are authorised to test. Do not use them to create fake or bulk accounts on other services, to farm sign-up bonuses, to evade bans or to get around identity checks. Each number is a single rented line, not a tool for mass registration.
Frequently asked questions
Can I use SMS Hallo for load testing SMS?
No. Numbers are single lines with 500 outgoing SMS per month and are meant for functional QA of real delivery, not for high-volume load tests.
Can I test voice-call verification?
Yes. Incoming calls are unlimited and can be answered in the browser dialer, so you can hear and check voice codes.
Are the numbers VoIP?
No. They are real mobile numbers in each country's mobile range and local mobile format, which is closer to what your real users have.
Can my whole QA team see the messages?
Messages appear only in the SMS Hallo account that rents the number. Decide inside your team who manages that account, following your own security rules.
Can I use the numbers to create accounts on other apps?
Only for your own personal use within those apps' terms. Mass account creation and fake accounts are not allowed.