How to use iOS debug app on iPhone while disconnected?

Question

I made a flutter app and tried to build on iPhone. It works while debugging is connected. But if I try to exit and relaunch the app or disconnect cable, it would not launch again and keeps crashing. How can I use the app while Xcode debugging is disconnected?

Solution

Run flutter run --release in the terminal and that'll allow you to run a production version app on your iOS device without debugging connected.