Key Takeaways
- Deliverability on an Android SMS gateway server is per-device DLR plus last-seen — not a single HTTP 200 rate on the control plane.
- API-hub how-to is the adapter funnel. This Hub F page is what on-call charts on the rack.
- Unknown DLR is not failed. A dead phone looks like “the API is down” if you never split rates by deviceId.
- CPaaS dashboards hide rented-number SMSC paths. You hide nothing: the SIM is yours.
- You bring the phone and operator credit. Platform pricing is devices plus send volume.
Per device, not one HTTP %
Cornerstone: Android SMS gateway server. Adapter funnel: how to measure deliverability (API). Health gates: device health checklist.
We meter devices and volume. A pretty delivered chart does not include pulsa. Starter, Professional, and Business list Unlimited SMS as platform send volume; that is not unmetered carrier SMS.
What the server can see
Persist accepted → claimed → delivered/failed/unknown by deviceId. Live fields: Developer Center. DLR: delivery reports. Webhooks: webhooks.
“If you average three phones into one %, the dead OTP modem hides behind the campaign modem that still looks fine.”
Metric vs lie
| Chart | Means | Lie if you stop here |
|---|---|---|
| Control-plane 2xx | JSON accepted | The SIM never woke |
| Last-seen | Phone still talking IP | SMS slot can still be dead |
| Pending age | Jobs waiting for claim | You called it “API latency” |
| Delivered (per device) | DLR success when the operator returns it | Silent markets look like 0% |
| Unknown | No DLR in window | Auto-resend OTP |
When last-seen explains the dip
UPS, OEM, SIM not ready. Canary on-net/off-net per named device. Isolate OTP.
Vs CPaaS dashboards
Aggregators sell rented numbers and per-message SMSC paths. You sell a SIM the recipient can reply to, plus our device/volume fee. Twilio vs Android. Industry context: GSMA.
Next steps
Split last week’s funnel by device. Then add a spare. Pricing. Operator credit stays yours.
Related product pages
Jump to the live product docs for this topic—not another long-form article.
- SMS API documentationLive endpoint reference
- device and SMS volume pricingPlans and allowances
- Android SMS gateway product guideDefinition, product, and how to buy
- download the Android gateway appGet the APK
