OnlineSIM Review 2026: Is It Legit?
Our verdict
Focused on reliability and long-term number rentals for repeat logins, plus a page of free public numbers.
Best for: Long-term rentals and repeat SMS.
Pros
- Long-term rentals
- Repeat SMS on rented numbers
- Free public numbers to test
Cons
- One-time codes cost more than at the leaders
- Free numbers rarely pass verification
What is OnlineSIM
OnlineSIM has been on the market for about 13 years (since 2013). It covers 110+ countries and 1,000+ services and also offers free public numbers for testing.
How it works and what it costs
There are two formats: a 15-minute number for one service, and a rented number that receives SMS from any service and can be extended. If no message arrives, you close the number and the money returns to your balance. Prices appear only after you pick a country. The site warns that inactive numbers may be reissued after two to three months.
Who it's for
OnlineSIM fits users who need rentals for repeat logins and developers who want an API. Don't link payment methods or important data to a number you won't keep renting.
OnlineSIM: key facts
| Website | onlinesim.io |
|---|---|
| Number type | Rentals and one-time numbers |
| Operator | Not stated on the site |
| On the market since | 2013 |
| Countries | 110+ |
| Services | 1,000+ |
| Price from | Shown after choosing a country |
| One-time number lasts | 15 minutes |
| No SMS — refund? | Yes, to balance when you close the number |
| Rentals | Yes, any service, unlimited SMS |
| API | Yes |
| Payment | Not stated on the site |
| Apps & bots | Not stated on the site |
| Sign-up | Account; Google, Telegram, VK, Facebook login |
| Support | 24/7, email |
| Scale | Not stated on the site |
Checked on the official site: 12.10.2026 · onlinesim.io
Before you pay
- Refunds go to your balance, not your card.
- The site warns that inactive numbers can be reissued in 2–3 months — don't tie payment methods to them.
OnlineSIM vs alternatives
| OnlineSIM | Tiger SMS | HeroSMS | TextVerified | |
|---|---|---|---|---|
| Countries | 110+ | 260+ | 180+ | US numbers only |
| Price from | Shown after choosing a country | $0.001 | from $0.0075 (Instagram) | $0.25 per verification |
| No SMS — refund? | Yes, to balance when you close the number | Yes — instantly to balance; you pay only for received SMS | Yes — automatically to balance | Yes, for paid verifications |
| Rentals | Yes, any service, unlimited SMS | No | Yes ("Full rent"); terms not stated | Yes: 1–14 days from $1.50; monthly from $5 |
| API | Yes | Yes, with incoming-SMS webhook | Yes | Yes (v2) |
| Our score | 8.0 | 9.8 | 9.1 | 8.6 |
Data from each provider's official site, checked 12.10.2026.
Apps OnlineSIM works for
OnlineSIM FAQ
Is OnlineSIM legit?
OnlineSIM is an established service that works on a prepaid balance. Keep only what you plan to spend on the balance, and turn on 2FA on accounts you register.
What if the SMS doesn't arrive?
Cancel the order and take a number from another country. Full checklist.
What are the best OnlineSIM alternatives?
See OnlineSIM alternatives. Our #1 pick is Tiger SMS.
How much does OnlineSIM cost?
The site lists prices from Shown after choosing a country. The final price depends on the app and the country.
Does OnlineSIM refund you if the SMS doesn't arrive?
Yes, to balance when you close the number.
Can I rent a number on OnlineSIM?
Yes, any service, unlimited SMS.
Help center
- Why Am I Not Receiving Verification Codes? 9 Causes and Fixes — The main checklist: why the code doesn't come and how to get your money back.
- How Refunds Work When a Code Doesn't Arrive — Cancel the order and get your money back.
- "This Phone Number Cannot Be Used for Verification": How to Fix It — Google and other apps reject the number — what it means and what to do.
- Recovering an Account Registered on a Temporary Number — What to do when the number isn't yours anymore.
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