Simcity Buildit 1100.7 Error May 2026

SimCity BuildIt requires a persistent, low-latency connection. If you are on a train, using public Wi-Fi, or have a router with high packet loss, the game will throw 1100.7 instead of crashing outright.

First, let’s decode the number. In software development, error codes follow logic.

In plain English: Your game tried to save your progress or load a feature (like the Global Trade HQ or War对战), but the connection was interrupted before the server could say "Confirmed."

Unlike generic "connection failed" errors, the 1100.7 code is specific to SimCity BuildIt’s client-server authentication handshake. When you launch the game, your device sends a "handshake packet" to EA’s servers. Error 1100.7 occurs when the server receives that packet but finds it malformed, expired, or conflicting with a previously saved state. Simcity Buildit 1100.7 Error

In plain English: Your phone and the EA server are speaking different versions of the same language, or your local save file has a timestamp mismatch with the cloud save.

Common symptoms include:

Apple’s iCloud+ Private Relay is a common culprit for error 1100.7. In plain English: Your game tried to save

| Aspect | Verdict | |----------------------|-----------------------------------------------| | Is error code official? | No – not listed in EA documentation | | Severity | Medium – usually fixed by cache/network reset | | Data loss risk | Low if cloud save is active | | Fix difficulty | Very easy (no technical skill required) |

Final recommendation: Start with cache clear + network switch. Reinstall only if you’ve verified cloud save is on. If the error persists, it’s likely a temporary server-side issue – wait 2–4 hours.

Let me know your device (iPhone model / Android brand) if the error still appears, and I’ll give you exact button‑by‑button steps. Final recommendation : Start with cache clear +

If you’ve tried all the steps above and still see error 1100.7 for more than 24 hours, reach out to EA Help with:

Corrupted cache is the #1 cause of 1100.7.

Android:
Settings → Apps → SimCity BuildIt → Storage → Clear Cache (not Clear Data)

iOS:
Offload the app (Settings → General → iPhone Storage → SimCity → Offload App), then reinstall. This keeps your save data.

During "Black Friday" sales, "Mayor’s Pass" season launches, or "War" weekends, EA’s servers get slammed. When millions of mayors log in simultaneously, the server queue times out, generating error 1100.7.