Symptoms
- Bulb flickers on its own even without app or voice commands
- Flickering happens in a specific pattern, sometimes signaling status
- Bulb dims or blinks when Wi-Fi connection drops
Likely causes
- CommonInstalled behind a physical dimmer switch not meant for smart bulbsSmart bulbs need constant, full power and should not be used with a separate dimmer switch.
- CommonThe bulb is signaling a Wi-Fi connection issueMany smart bulbs blink in specific patterns to indicate they've lost their network connection.
- PossibleA loose bulb or socket connectionSmart bulbs are still ordinary bulbs mechanically and can flicker from a loose fit.
- PossibleVoltage fluctuation on the circuitSmart bulb electronics can be more sensitive to minor voltage swings than simple bulbs.
What to do
- Confirm the bulb is installed with the wall switch left fully on, not paired with a physical dimmer.
- Remove any dimmer switch controlling a smart bulb circuit and replace it with a standard on/off switch if needed.
- Check your smart home app for a Wi-Fi connectivity warning on that bulb.
- Move your router or add an extender if the bulb is in a weak signal area.
- Tighten the bulb gently to rule out a loose connection.
- Try the bulb in a different fixture to see if the flicker follows the bulb or stays with the location.
- Contact the manufacturer if flicker continues with a stable connection and a standard on/off switch.
Tools and parts
Standard on/off switch to replace a dimmerSearch: “single pole light switch”
When to call a pro
Call an electrician if you need a dimmer swapped for a standard switch and aren't comfortable doing it yourself.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.