Key Takeaways
- Scenario 1540 is a cafeteria meal-account freeze blast at 07:15: the meals SIM dies under the parent spike — a spare already paired takes the rest. Not sports physicals, Chromebook checkout, or bus-route.
- Families who get silence will clog the cashier line. The product is the second radio.
- Do not SMS student names or balances in message 1. Desk, hours, and a short PIN if you must.
- Staff portal OTP stays on another device.
- Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Free: 1 device / 300 SMS lifetime / 300 contacts. Developer: 25,000 SMS per year.
Android SMS gateway scenario 1540 is a cafeteria desk. Parents get “account frozen — pay window 07:30, office.” The meals SIM cooks at 07:15. A spare already hot takes the rest. Physicals deadlines and cart checkouts are the wrong list.
Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Multi-device · Developer Center. GSMA.
Meal freeze, not physicals
Pair the spare the night a freeze posts. 07:17 is a failover, not a firmware update.
If 90 parents were queued and one radio died, the line filled with kids whose accounts never unfroze.
Cafeteria vs LMS
| Lane | Body | Failover | Device |
|---|---|---|---|
| Desk / hours | Office, clock | Spare at 07:15 | Meals + spare |
| Staff LMS OTP | Digits | Never share | Dedicated |
| Balances / names | Do not SMS | — | — |
Caps: 2 / 5 / 15.
Spare already paired
Mid-blast pairing fails. Failover. REST: PHP, C#. MCP wraps REST.
No student names
Desk and hours only. Confirm identity on inbound STOP.
Devices and airtime
Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Free: 300 lifetime. Developer: 25,000 SMS per year. Pricing.
07:15 blast
Doze exempt before breakfast. Doze · Setup.
Meal SIMs
Log event id + device, not balances in chat. Rotate keys. Not a CodeCanyon cafeteria pack.
Two SIMs or a queue
If you will not keep a hot spare, do not promise 07:15 meal SMS.
Checklist
- Spare paired overnight.
- No names in templates.
- OTP on another device.
- Webhook signatures.
- Both handsets charged at 06:30.
Next steps
Kill the meals SIM on a canary list; prove the spare finishes before 07:28. Downloads · Docs.
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
- OTP and 2FA SMS on AndroidAuthentication flows
- SMS delivery reports (DLR)Delivery status tracking
- SMS API documentationLive endpoint reference
