By default Flipper runs its servers on ports 8088 and 8089, and the mobile SDKs look for servers on those ports.
Each of these can be overridden by setting an environment variable, with the format
To run the desktop app using custom ports:
To configure the Android SDK for custom ports, set the
flipper.ports prop to your chosen ports
1111,2222 like so, and then launch the Android app.
To configure the iOS SDK for custom ports, set the FLIPPER_PORTS environment variable in your app launch script.