If your Arlo doorbell isn't connecting to your phone, several issues might be at play. Start by ensuring your phone and the Arlo doorbell are on the same WiFi network. Check for any software updates on your phone and in the Arlo app, as outdated software can cause connectivity problems. Additionally, restart your phone and the Arlo doorbell to refresh the connection. If the issue persists, your router's settings may need adjustment or there could be an issue with your network signal strength. For further assistance, contact Arlo support at +1-800-857-0779. They can provide expert help to resolve the connectivity issue.