WiZ Smart Bulb Not Connecting to WiFi or App

Problem Description

Your WiZ A19 Color LED Bulb is not connecting to your WiFi network during setup, showing offline in the WiZ app, or not responding to voice commands.

Common Causes

• Bulb requires 2.4GHz WiFi (5GHz not supported)
• WiFi password or network name issues
• Too many devices on network
• Router security settings blocking connection
• Bulb firmware outdated

Solutions

1. Verify WiFi Requirements

• WiZ bulbs only work with 2.4GHz networks
• Network name should not contain special characters
• Password must be WPA/WPA2 (not WPA3)
• Hidden networks may cause issues - try making visible

2. Reset the Bulb

1. Turn the bulb off at the switch
2. Turn on for 1 second, off for 1 second
3. Repeat 3 times quickly
4. Leave on - bulb will pulse blue when ready to pair

3. Reconnect in WiZ App

1. Open WiZ app and remove the offline bulb
2. Tap + to add a new device
3. Select your bulb type
4. Ensure you are on your 2.4GHz network
5. Follow the pairing wizard

4. Check Router Settings

• Disable AP Isolation if enabled
• Ensure DHCP has available addresses
• Check device limit on your router
• Try temporarily disabling firewall

5. Power Cycle Everything

1. Turn off the bulb at the switch
2. Restart your router
3. Wait for router to fully boot
4. Turn bulb back on and try setup again

6. Update WiZ App and Firmware

• Update WiZ app to latest version
• Once connected, check for bulb firmware updates in settings
• Keep phone near bulb during updates

When to Contact Support

Contact WiZ/Signify Support if the bulb will not enter pairing mode after reset, flickers excessively, or produces unusual colors.