Key Takeaways
- android sms gateway otp priority queue troubleshooting is isolation and radio health — not an undocumented priority flag.
- Live send is POST /api/v1/messages with Bearer auth. Pin OTP with deviceIds. Docs own fields.
- A promo blast on the same SIM as login codes is the usual “queue” failure.
- OEM per-hour ceilings and Doze look like a stuck priority lane.
- Priced by devices and SMS send volume. You use your own phone and operator SMS credit. OTP retries still burn operator airtime.
- Canary OTP on a staff number before you blame the control plane.
There is no magic priority JSON field
Search intent for android sms gateway otp priority queue troubleshooting is delayed login codes on an Android SIM you operate. Service pricing is based on device count and total SMS sent through the gateway. Do not invent a priority body field. Isolation is how you give OTP the radio.
If bulk and 2FA share one modem, there is no queue to tune. There is a traffic jam you scheduled.
Live contract: docs.sms-gateway.app. Use-case: OTP verification.
How bulk starves OTP
A campaign POST with a long to[] occupies the radio. OEM per-hour ceilings add wait. The control plane is not an aggregator SMSC. Bulk SMS.
| You see | Check | Fix |
|---|---|---|
| Login SMS after the campaign | Same deviceId as bulk | Pin OTP; move promo |
| Codes arrive in bursts | OEM rate ceiling | Pace bulk; raise allowed Android limits; carrier fair-use remains |
| Nothing until morning | Doze / unpaired | Exemptions; spare charged |
| Two codes, one login | Retry without Idempotency-Key | Key on the auth event |
Pin OTP with deviceIds
POST /api/v1/messages with deviceIds when you must pin. Omit it and you hit the primary — often the promo phone. Starter is 2 devices. Dual SIM is still one chassis. Multi-device guide. Failover drills: failover troubleshooting.
OEM ceilings and Doze
Raise allowed Android/OEM SMS rate ceilings where the OEM lets you. Carrier fair-use still applies. Doze pauses overnight radios (Doze and app standby). Device setup. DLR: delivery reports.
Retries that look like a stuck queue
Ambiguous HTTP timeouts plus no Idempotency-Key send two codes. The “queue” was your client. Keys in env — API keys in env. Priced by devices and SMS send volume. You use your own phone and operator SMS credit.
OTP queue checklist
- OTP deviceId ≠ promo deviceId.
- No invented priority field.
- Idempotency-Key on auth events.
- Last-seen and airtime checked.
- Staff canary before customer 2FA.
Next steps
Pin OTP, pause bulk, send a staff code, then restore campaign pace. Pricing. App: downloads.
Related product pages
Jump to the live product docs for this topic—not another long-form article.
- OTP and 2FA SMS on AndroidAuthentication flows
- SMS API documentationLive endpoint reference
- device and SMS volume pricingPlans and allowances
- Android SMS gateway product guideDefinition, product, and how to buy
