Why does my smart device fail when my phone is on mobile data?
Some setup apps require the phone to be on the same local Wi‑Fi, with local-network/location/Bluetooth permissions. Turn off mobile-data switching temporarily during onboarding.
Phone network; app permissions; same subnet.
Device maker.
Show the technical detail
On a managed Wi-Fi plan
Guide only through the device maker’s approved setup flow.
On another provider's router
Same across ISPs.
What to be careful of
Do not request app credentials.
Where this comes from: Official · see the original source ↗ · Draft—technical review · checked 17 August 2026