A. 1. Ensure that your iPhone's Bluetooth is turned on and functioning properly. Go to Settings > Bluetooth and toggle it off and on again. 2. Check the distance between your iPhone and the LED lamp. Ensure they are within the recommended range (usually within 30 feet). 3. Restart both your iPhone and the LED lamp. This can help reset the connection. 4. If the issue persists, try deleting the app and reinstalling it from the App Store.

B. 1. Check for any firmware updates for the LED lamp. Some manufacturers provide updates that can improve connectivity. 2. If your app has a 'Reconnect' or 'Refresh' option, use it to re-establish the connection.