Key Takeaways
- Scenario 40 is a library laptop-loan window at 08:20: the loans SIM dies under the parent/student spike — a spare already paired takes the rest. Not breakfast-site, snow-day, or exam-hall.
- Families who get silence will clog the issue desk. The product is the second radio.
- Do not SMS student names or asset tags in message 1. Pickup window, desk, 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 40 is a school library on exam-week loan morning. Chromebooks go out at 08:30. The loans SIM will throttle. Meal-site moves and snow closures are the wrong list.
Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Failover · Developer Center. GSMA.
Laptop loan, not a meal
Split year-groups across two device ids before send. Fail closed if both SIMs reject.
If you find the spare in a charging trolley after the first two years fail, you ran a queue argument, not a loan.
Loan vs LMS
| Lane | Body | Failover | Device |
|---|---|---|---|
| Pickup window | Desk, time | Split list | Library + spare |
| LMS / exam | Code | Class modem | Separate |
| Staff portal OTP | Digits | Auth | Dedicated |
Caps: 2 / 5 / 15.
Spare already paired
Health-check both radios at 07:30. REST: PHP, C#. MCP wraps REST.
No student names
Desk and time only. Identity on inbound if they reply WHICH DESK.
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.
08:20 blast
Loans SIMs
Log campaign id + device id, not asset tags in chat. Rotate keys. Not a CodeCanyon library pack.
Two SIMs or a queue
If you will not keep a hot spare on loan mornings, do not promise SMS pickups.
Checklist
- Spare paired night before.
- List split before send.
- No names in templates.
- Staff OTP elsewhere.
- Webhook signatures.
Next steps
Kill the loans SIM mid-test list; prove the spare finishes the remainder. 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
