Symptoms
- Apps work fine on cellular but crash or hang on Wi-Fi
- Specific Wi-Fi network causes problems, others don't
- Slow or failed connections only at home or work
- Switching networks temporarily fixes the issue
Likely causes
- CommonRouter misconfiguration or an outdated router firmwareCertain router settings can interfere with specific apps' connections.
- CommonDNS server issues on that networkA problematic DNS setting can cause app connections to fail intermittently.
- PossibleVPN or firewall software blocking parts of the app's trafficSecurity software on the network can inadvertently block legitimate app data.
- PossibleWeak or overloaded Wi-Fi signalA congested network can cause timeouts that look like app crashes.
- Less commonIP address conflict on the networkTwo devices sharing an IP can cause unpredictable connectivity issues.
What to do
- Restart your router and modem.
- Forget the Wi-Fi network on your phone and reconnect, re-entering the password.
- Try a different Wi-Fi network, like a mobile hotspot, to confirm it's network-specific.
- Check if a VPN is active and try disabling it temporarily.
- Update your router's firmware through its app or admin page.
- Change the phone's DNS settings to a public DNS if you're comfortable doing so.
- Move closer to the router to rule out a weak signal.
When to call a pro
If the problem is isolated to a specific router even after a restart and firmware update, contact your internet provider or router manufacturer's support.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.