Your phone stores temporary game data (assets, images of buildings, friend lists). If this cache gets corrupted, your game client sends "garbage" data to the server. The server rejects it, and you get the 1100.7 error.
: Some players have reported that using a VPN helps bypass server-side blocks or routing issues that prevent content downloads. Simcity Buildit 1100.7 Error
If retrying doesn't work, try using a VPN . Changing your virtual location can sometimes bypass regional server congestion or routing issues that prevent the download from completing. 2. Refresh Your Connection Your phone stores temporary game data (assets, images
SimCity updates often require more space than the initial download. Ensure you have at least on your device to accommodate the additional assets being downloaded. 5. The Nuclear Option: Reinstall images of buildings