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Lesson 02 · Cross-platform Mobile with React Native

Cross-platform: The Expo Workflow & Device Testing

Create an Expo project, run it on your own phone with Expo Go, understand Fast Refresh's real rules, and know why the Expo SDK pins its versions.

40 minintermediateCross-platform Mobile Specialization

Prerequisites: Cross-platform: React Native Fundamentals

Learning objectives
By the end of this lesson, you will be able to:
  • Set up an Expo project with create-expo-app and run it on your phone with Expo Go
  • Choose between Expo Go, an Android emulator and an iOS simulator for testing
  • Predict what Fast Refresh preserves and what it resets after an edit
  • Explain why the Expo SDK pins versions and when upgrading is deliberate