Hi everyone,
We had developed an iOS Application in Flutter and built it using XCode 26.0.1. We're unable to install this application in iOS 18.7. Below are the details,
➡️ Development Environment:
🔹 Flutter: 3.32.2
➡️ Build Environment:
🔹 Xcode: 26.0.1
🔹 Build system: Flutter → flutter build ios --release, then opened in Xcode for signing
➡️ Device models tested:
🔹 iPhone (iOS 15.8.3 / 15.8.5) → ✅ installs and launches fine
🔹 iOS Simulator (iOS 18.6 / 26) → ✅ works fine
🔹 iPad (iOS 18.7) → ❌ fails to install
➡️ Error message on iPad (iOS 18.7):
🔹 “Unable to install ‘<App Name>’. Please try again later.”
➡️ What we’ve tried:
🔹 Cleaned and rebuilt the project (flutter clean, DerivedData removed)
🔹 Deployment Target is set to iOS 18.7 or lower.
🔹 Built the app using an Enterprise distribution profile, not a Development profile.
🔹 Works fine on older iPhones (iOS 15.8.3 / 15.8.5), so signing seems valid
🔹 Device has enough storage, and trust is granted under Settings › VPN & Device Management
➡️ Questions:
🔹 Could this be related to iOS 18.7’s signing or compatibility change?
🔹 Are there any known issues with enterprise installs on iOS 18.7?
🔹 Any insight from Apple engineers or others who faced this with iOS 18.7 would be extremely helpful.
Thanks in advance!