1. adb devices

• Is your phone displaying? If not, enable developer mode on your phone, and connect it by USB.

1. adb reverse tcp:8081 tcp:8081 :

• In order to link correctly your phone and that React-Native recognize him during build. (NOTE:Android Version 5 or above.)

1. react-native run-android :

• To run the app on your phone.

1. react-native start :

• In order to start a local server for development (mandatory). This server is automatically started if you use the last version of React-native.

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