GLOWSMS vs OnlineSim: Best SMS Activation Alternatives After SMS‑Activate Shut Down
GLOWSMS vs OnlineSim in 2026—compare coverage in 180+ countries, number quality, delivery speed, and pricing for users migrating from SMS-Activate.
SMS-Activate shut down. If you used it for SMS verification, you need another service with current stock, a clear order window, and a refund path if no code arrives.
This page compares GlowSMS and OnlineSim on coverage, number type, rentals, and API. We describe what GlowSMS does. For OnlineSim, we only use what it publishes. We do not invent prices, stock, or success rates.
What to check after SMS-Activate
Look at more than a starting price:
- Country and service stock right now
- Temporary activation vs longer rental
- What happens if no SMS arrives
- Website flow and API docs, if you automate
Stock and prices change. Check the live offer before you order.
GlowSMS
GlowSMS provides non-VoIP virtual numbers for SMS verification. Coverage is 180+ countries and 500+ services. The catalog shows current country, service, stock, and price before you pay.
A temporary activation stays open for up to 20 minutes. Resends can arrive on the same order. If no code arrives in that window, you can cancel an eligible order. The charge returns to your GlowSMS balance.
The website and the public REST API share the same balance. You can list services, check offers, place an order, poll for the code, then complete or cancel.
What GlowSMS includes
- Non-VoIP numbers
- 180+ countries and 500+ services
- Live catalog for stock and pricing
- Up to 20 minutes per activation, with resends
- Balance refund on an eligible order with no SMS
- Public REST API and web dashboard
OnlineSim
OnlineSim has operated since 2013. It publishes coverage across 90+ countries and offers one-time activations and longer rentals. It describes its numbers as physical SIM lines connected to mobile operators.
If you need a number for longer than one short verification, compare its rental terms, renewal, and cancellation rules on its site. We do not treat a GlowSMS 20-minute activation as the same product as a multi-day rental.
What to check on OnlineSim
- Current country and service list
- One-time vs rental pricing
- Refund rules if no SMS arrives
- API docs, if you automate
Side-by-side
| Point | GlowSMS | OnlineSim |
|---|---|---|
| Countries | 180+ | 90+ (as published) |
| Services | 500+ | Check its current catalog |
| Number type | Non-VoIP | Physical SIM / non-VoIP, as it describes |
| Activation | Up to 20 minutes | One-time and longer rentals |
| If no SMS arrives | Eligible order returns to GlowSMS balance | Follow the rules it publishes |
| Catalog | Live stock and price by country and service | Check its current offers |
| API | Public REST API, same balance as the website | Check its current documentation |
A United States number on GlowSMS still depends on the service and current stock. The same is true for other countries. Broad coverage does not mean every service is in stock at every moment.
Pricing
GlowSMS is pay-per-use. You see the price on the catalog for that country and service. There is no monthly fee for a temporary activation.
OnlineSim pricing depends on whether you buy a one-time activation or a rental. Check its current offer. A rental can cost more if you keep the number longer.
Do not judge either service by one headline price.
How to start on GlowSMS
- Create an account and add balance.
- Open the catalog. Choose the service, then the country.
- Check stock and price, then place the activation.
- Enter the number on the service you are verifying.
- Read the code in the GlowSMS dashboard.
- Use the code before the 20-minute window ends.
- Cancel an eligible order if no code arrives, so the charge returns to your balance.
API
GlowSMS has a public REST API for numbers, OTP delivery, and order status. Read the docs for authentication, country codes, order states, rate limits, and errors.
Do not assume it is a drop-in replacement for the old SMS-Activate API. Test one order before you change production code.
Who should use which
Use GlowSMS if you want a live catalog, 180+ countries, 500+ services, a 20-minute activation, resends, and a balance refund when an eligible order gets no code.
Compare OnlineSim if you need a longer rental or already use its platform. Read its rental and refund terms first.
Temporary virtual numbers are not physical SIM cards and not a personal phone plan. Follow the terms of the service you are verifying.
FAQ
Why look at GlowSMS after SMS-Activate shut down?
GlowSMS covers 180+ countries and 500+ services, shows live stock and price, and refunds an eligible order to balance if no code arrives. That is a direct replacement path for one-off verification and API work.
How many countries does OnlineSim cover?
OnlineSim publishes 90+ countries. Check its current list for the country and service you need.
Does GlowSMS offer rentals like OnlineSim?
GlowSMS temporary activations stay open for up to 20 minutes. That is not the same as a multi-day rental. If you need a number for longer, compare rental services separately.
What happens if GlowSMS does not receive an SMS?
If no code arrives within 20 minutes, you can cancel an eligible order. The charge returns to your GlowSMS balance. Read the refund policy for the exact rules.
Does GlowSMS have an API?
Yes. The website and API share the same balance. See the REST API docs.
Are numbers guaranteed to work on every platform?
No. Check current stock. No service can promise every platform will accept the number.
Final note
If you are moving off SMS-Activate, open the GlowSMS catalog, pick the country and service, and check the current offer. If you need a longer rental, read OnlineSim’s terms and compare them to a 20-minute GlowSMS activation before you choose.