Update your mobile device to its latest official firmware version via system settings to ensure modern network protocols run cleanly. Comparison of Solutions Troubleshooting Level Technical Risk Data Loss Danger? Minor connection drops Network Switching / VPN Regional routing blockages Clearing Cache / Offloading Corrupted local update logs Full Reinstallation Deep asset corruption Yes (If city isn't linked to Cloud) What to Do If the Error Persists
Try these common solutions shared by the community to get back into your city: Switch Your Connection Simcity Buildit 1100.7 Error
Do not delete the app without reading this. You must ensure your city is saved to Facebook, Google Play, or Apple ID. Update your mobile device to its latest official