Key Takeaways
- Scenario 190 is LLIN / mosquito-net issue USSD: a short menu at the distribution desk. Timeout is a radio miss, not an issued net — not birth notify, ANC, or rations.
- A warehouse that treats a dropped session as issued will leave a household without a net and start a queue fight.
- Do not USSD family size or the brand. Card last-four, site, and issue/hold.
- 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 190 is a malaria-desk at a health post. Clerks dial a short code, read the card, and commit an LLIN issue. Birth notify and camp oil rations are the wrong list.
Priced by devices and SMS send volume. You use your own phone and operator SMS credit. USSD · Developer Center. GSMA.
Net tree, not a birth
Keep the tree to three steps. Persist only a committed issue. Map to card id + campaign + site.
If a dropped *662# became “issued,” you closed the book on a household still in the queue.
USSD vs queue SMS
| Lane | Body | On timeout | Device |
|---|---|---|---|
| Desk issue | Card + issue | Retry / paper | Site modem |
| Queue window SMS | Gate, hour | DLR separately | HQ modem |
| Staff portal OTP | Digits | Auth | Dedicated |
Caps: 2 / 5 / 15.
Timeout ≠ issued
One retry, then paper stub. Deliverability. REST: PHP, C#. MCP wraps REST.
No household names
Card last-four only. Names stay on the paper register.
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.
05:30 desk
Card ids
Log card id + campaign + result, not national IDs in chat. Rotate keys. Not a CodeCanyon LLIN pack.
Retry then paper
If you will treat timeouts as issued, do not run USSD nets.
Checklist
- Commit only on issue.
- Timeout queue for retry.
- No names in the tree.
- OTP on another device.
- Webhook signatures.
Next steps
Drop a session mid-menu; prove the card stays unissued until a committed tap. Downloads · Docs.
Related product pages
Jump to the live product docs for this topic—not another long-form article.
- USSD balance and menu automationOperator USSD codes
- SMS API documentationLive endpoint reference
- device and SMS volume pricingPlans and allowances
- Android SMS gateway product guideDefinition, product, and how to buy
