How to run React Native app on Android Phone

Issue

I am building React Native app.

It is working well when I launch the app in terminal on Mac using "react-native run-android".

But when I got the apk file and installed it on another android device manually, it does not work.

It looks like this.

Solution

Looks like the source code in your APK is looking for the package server.

Read this on how to build APKs for react-native: React-Native - Generating Signed APK

If your devices is connected via cable:

• If you're on a physical device connected to the same machine, run 'adb reverse tcp:8081 tcp:8081' to forward requests from your device

Otherwise, you can still do this via Wifi by following the last point in the error:

• If your device is on the same Wi-Fi network, set 'Debug server host & port for device' in 'Dev settings' to your machine's IP address and the port of the local dev server -e.g. 10.0.1.1:8081

Answered By - Zidail