Key Takeaways
- free sms server multi device: the Free plan is 1 Android and 300 SMS lifetime — not a fleet SKU.
- Starter is 2 devices. That is the first catalog step for OTP plus spare or promo split.
- Dual SIM on one phone still counts as one device meter.
- Starter, Professional, and Business list Unlimited SMS as platform send volume; that is not unmetered carrier SMS. Operator airtime stays yours.
- Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Sends pause on Free when the lifetime allowance is exhausted.
- Docs own routing fields. This page is the device cap, not a hidden unlock.
Free is one device, not a fleet
Search intent for free sms server multi device is usually “can I attach two Androids on the $0 plan.” Service pricing is based on device count and total SMS sent through the gateway. Catalog answer: no. Free is 1 device and 300 SMS lifetime. Hub: Free SMS server.
A second phone on Free is not a hidden unlock. It is a pairing error waiting to happen — upgrade the device cap first.
Multi-device product surface: multi-device and dual SIM. Dual SIM ≠ two meters.
Why people search multi-device on Free
They want OTP isolation or a spare. Those are real ops needs. They are not included in the Free device count. OTP verification.
| Need | Free | Next catalog step |
|---|---|---|
| Learn the API | 1 phone, 300 lifetime | Stay on Free until the cap |
| OTP + spare | Cannot pair the spare | Starter — 2 devices |
| OTP + promo split | One radio has to do both — don’t | Starter or Professional (5) |
| Site fleet | Not this SKU | Business — 15 devices |
When Starter is the honest next step
Starter is 2 devices and uncapped platform send volume (operator fair-use still applies). That is the first SKU where OTP plus spare is a supported pairing, not a workaround. Device and volume pricing.
deviceIds and OTP isolation
After you have two meters, pin OTP. Failover troubleshooting. Docs: docs.sms-gateway.app.
Local “free SMS server” vs this Free plan
Self-hosted/local-only stacks are a different product conversation. Local-only mode. This page is the hosted Free SKU. Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Allowance exhaust pauses sends on Free — we do not silently bill overage.
Android connectivity still applies to every extra phone you eventually pair (Android connectivity).
Fleet checklist
- Confirm you actually need a second meter (OTP/spare), not dual SIM on one phone.
- Do not expect Free to pair two Androids.
- Upgrade device cap before the spare arrives.
- Fund operator credit on every SIM.
- Canary on staff numbers after the second pair.
Next steps
Finish Free canaries, then add the spare on Starter. Setup. Twilio vs Android SMS gateway.
Related product pages
Jump to the live product docs for this topic—not another long-form article.
- multi-device and dual SIM routingCapacity and failover
- device and SMS volume pricingPlans and allowances
- Android SMS gateway product guideDefinition, product, and how to buy
- SMS API documentationLive endpoint reference
