Make sure you have Xcode 9 or higher and the correct command line tool is specified.
If you don't have cocoa-pods installed,
$ sudo gem install cocoapods
Using Cocoa-pods install the pods.
$ cd ios && pod install && cd ..
You can run it directly from within Xcode also.
OR
$ react-native run-ios
This will either open the emulator or the would install the app on your iPhone.
- Incase you find an error related to Fix Search Paths / Argument List Too Long in iOS build process, you can fix it using this PR change.