Key Takeaways
- OTP launch checklist for the Android app is pairing, battery, airtime, and canary — not a green dashboard alone.
- Isolate OTP from marketing before customer traffic.
- Spare charged device + named on-call are mandatory.
- Free is 1 device / 300 SMS lifetime; BYO phone and operator credit.
- Developer Center owns live API fields.
App-side OTP gates
An OTP launch checklist for the Android app focuses on the handset path: permissions, battery exemptions, pairing, and a funded SIM. Product: Android SMS gateway. Use case: OTP.
“A paired app with Doze still killing the process is not a launch. A canary OTP on a cold handset is.”
Launch pulse
Gate
Pair
Gate
Battery
Gate
Canary
Gate
On-call
Go / no-go
| Gate | GO | NO-GO |
|---|---|---|
| Pairing | Primary + spare online | Flapping session |
| OEM / battery | Exemptions + reboot auto-start | Killed overnight |
| Airtime | Funded + retry buffer | Unknown prepaid |
| OTP isolation | Separate from promo | Shared unbounded queue |
| Canary | Staff numbers on cold handset | Lab Wi-Fi only |
| Webhooks | Signatures verified | Unsigned receiver |
Android app checks
Walk setup: SMS permission, background survival, dual-SIM slot documented.
API readiness
Keys in env; idempotency; webhooks. Fields in Developer Center.
Cost
Devices + volume; Free 1 device / 300 SMS lifetime. Pricing.
Next steps
Downloads, canary, then ramp with a feature flag.
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
