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API production readiness Checklist for Core Android SMS Gateway

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API production readiness Checklist for Core Android SMS Gateway. Printable-style API production readiness checklist mapped to android sms gateway. Each item includes why it matters and a verification step. Priced by devices and SMS send volume; BYO phone and operator credit.

Written by the SMS Gateway team for operators who run phones and airtime themselves — not for theoretical cloud SMS demos.

PracticalAndroid SMS GatewayChecklistHub A
Article
Published
September 5, 2026
Updated
September 16, 2026
Reading time
16 minute read

Key Takeaways

  • A production Android SMS gateway API checklist is keys, idempotency, webhooks, isolated OTP radios, and a funded SIM — not a green CI badge alone.
  • Verify each item with a command or a lock-screen test, not a meeting note.
  • Free/Developer SMS caps pause sending. Do not discover that on launch morning.
  • You bring phones and operator credit. Pricing is devices plus send volume.

Android sms gateway checklist for API production is the last gate before real users get codes. Docs: Developer Center. API hub: Android SMS Gateway API.

You bring the phone and airtime. We meter devices and volume.

Canary on a cold phone. Then ship.

What production-ready means here

OTP survives OEM sleep, HTTP 504, and a prepaid dip. Feature theatre does not. Setup.

If you cannot name the deviceId that sends login codes, you are not in production. You are in a demo.

Checklist

ItemWhyVerify
API key in envAPK and git must not hold secretsKeys in env
Idempotency-KeyTimeouts must not double-textForce retry; one bubble
Webhook HMAC + event-id uniqueDLR/inbound retriesWebhooks
E.164 parseTrunk zerosNumber formats
OTP SIM isolatedBulk must not own the radioOTP queue limits
Doze exempt + spare chargedOvernight loginDoze
OEM send ceiling understoodThroughputRate limits
Airtime + plan headroomPause on Free/DeveloperPricing
STOP / consent on promoLegal + filtersAuto-reply

Android connectivity still applies: Android connectivity docs.

Keys and idempotency

Idempotent send · duplicate sends. Samples: PHP / C#— REST examples, not a packaged SDK.

Phones that actually send

Pairing, profiles, failover slots. Profiles · failover limits · downloads.

DLR, webhooks, duplicates

DLR · webhooks · server webhook.

Allowances vs airtime

Free: 300 SMS lifetime. Developer: 25,000/year. Starter/Pro/Business uncap platform volume, devices 2/5/15. Pause on Free/Developer at allowance. No unlimited carrier SMS.

Estimate operator cost.

Next steps

Run the table top to bottom on staging, then one production canary OTP to a staff handset. Contact if you need a contracted path.

Related product pages

Jump to the live product docs for this topic—not another long-form article.

FAQ

Frequently asked questions

Direct answers about android sms gateway checklist.

What is on an Android SMS gateway production readiness checklist?

Env-stored API keys, Idempotency-Key on sends, HMAC webhooks with event-id unique, E.164 parse, OTP device isolation, Doze exemptions, DLR monitoring, and operator airtime headroom.

Is a passing unit test enough?

No. A cold handset canary and a forced HTTP retry (one bubble) are the tests that matter.

Where are live API fields?

https://docs.sms-gateway.app/ — this page is the go-live bar, not a field mirror.

Does production include unlimited carrier SMS?

No. Free is 300 SMS lifetime. Operator airtime remains yours.
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Test the gateway on your own Android phone

Install the app, pair one device, and validate your API flow before choosing a paid plan.

You supply the phone, SIM, and operator SMS credit.

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