My cheap smart plug/bulb says Wi‑Fi password wrong.
Often the device supports only 2.4 GHz or WPA2, the setup phone lacks location/Bluetooth permission, or the SSID/password contains unsupported characters.
Model/app; permissions; WPA mode; SSID chars; pairing state.
Manufacturer; recommend replacement if insecure/unsupported.
Show the technical detail
On a managed Wi-Fi plan
Use temporary platform-specific 2.4 GHz onboarding and WPA2 compatibility test.
On another provider's router
Split bands on supported hubs only as a temporary diagnostic.
What to be careful of
Unknown IoT devices can pose security/privacy risk; place on isolated IoT network if supported.
Where this comes from: Official · see the original source ↗ · Draft—technical review · checked 17 August 2026