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React Native Interview Questions and Answers

This page provides a complete collection of React Native Interview Questions and Answersdesigned for mobile app developers, React developers, JavaScript developers, and candidates preparing for frontend and mobile development interviews.

React Native is an open-source framework developed by Meta that allows developers to build cross-platform mobile applications using JavaScript and React. It enables developers to create Android and iOS applications with reusable components and native performance.

This interview guide covers beginner, intermediate, and advanced React Native concepts including components, JSX, hooks, state management, navigation, APIs, native modules, performance optimization, Expo, debugging, and real-world mobile application development scenarios.

Difficulty
Beginner to Advanced
Topics Covered
React Native, JavaScript, Mobile Apps
Examples
React Native Coding Examples
Updated
July 2026

Why Learn React Native?

React Native has become one of the most popular frameworks for mobile application development because it allows developers to create Android and iOS apps using a single codebase.

Companies prefer React Native developers who understand React concepts, JavaScript fundamentals, mobile architecture, API integration, state management, and application performance optimization.

Topics Covered in React Native Interview Questions

  • React Native Fundamentals
  • React Components
  • JSX and Props
  • State Management
  • Hooks in React Native
  • Functional Components
  • React Navigation
  • API Integration
  • AsyncStorage
  • Native Modules
  • Expo Framework
  • Performance Optimization
Beginner
1. What is React Native?
React Native is an open-source framework developed by Meta that allows developers to build mobile applications for Android and iOS using JavaScript and React. Instead of writing separate code for Android (Java/Kotlin) and iOS (Swift), you can write one codebase and use it for both platforms.
React Native
function App() {
  return (
    <div>
      <h1>Hello World</h1>
    </div>
  );
}
Beginner
2. Difference between React & React Native?
React is used for building web applications and renders UI using HTML elements through the browser DOM.React Native is used for building mobile applications and renders UI using native mobile components for Android and iOS.
React vs React Native
| Feature      | React                 | React Native            |
|--------------|-----------------------|-------------------------|
| Platform     | Web Applications      | Mobile Applications     |
| Rendering    | Browser DOM           | Native Components       |
| UI Elements  | HTML Tags             | Native Components       |
| Example      | <div>                 | <View>                  |
| Styling      | CSS                   | StyleSheet API          |
Beginner
3. What languages are used in React Native?
JavaScript / TypeScript with native code (Java, Swift, Obj-C).
Beginner
4. What is JSX?
JSX allows writing UI code inside JavaScript.
Beginner
5. What are components?
Reusable UI blocks built using functions or classNamees.
Beginner
6. What is View?
is the basic container component similar to div.
Beginner
7. What is Text?
is used to display text in React Native.
Beginner
8. What is StyleSheet?
Used to create optimized styles for components.
Beginner
9. What is state?
State manages dynamic data inside a component.
Beginner
10. What is props?
Props pass data from parent to child components.
Intermediate
16. What is useState?
Hook for managing component state.
Intermediate
17. What is useEffect?
Hook for side effects like API calls.
Intermediate
18. What is Flexbox?
Primary layout system used in React Native.
Intermediate
19. What is ScrollView?
Scrollable container for multiple child components.
Intermediate
20. FlatList vs ScrollView?
FlatList is optimized for large lists, ScrollView is not.
Intermediate
21. What is AsyncStorage?
Used to store data locally on device.
Intermediate
22. What is navigation?
Used to move between screens using React Navigation.
Intermediate
23. What is Linking?
Used to open external URLs or apps.
Intermediate
24. What is keyboard avoiding view?
Adjusts UI when keyboard opens.
Intermediate
25. What is Expo?
Toolchain to build React Native apps faster.
Advanced
31. What is native bridge?
Communication layer between JS and native code.
Advanced
32. What is Hermes?
JavaScript engine optimized for React Native.
Advanced
33. What is performance optimization?
Using memoization, FlatList, avoiding re-renders.
Advanced
34. What is Code Push?
Update app without app store resubmission.
Advanced
35. What is Redux in RN?
Centralized state management.
Coding Round
41. useState example
const [count, setCount] = useState(0);
Coding Round
42. Button press
Answer Here
Coding Round
43. FlatList example
Answer Here
Coding Round
44. StyleSheet example
Answer Here
Coding Round
45. Image component
Answer Here
Coding Round
46. Navigation example
navigation.navigate('Home')
Coding Round
47. TextInput
Answer Here
Coding Round
48. useEffect example
Answer Here
Coding Round
49. TouchableOpacity
Answer Here
Coding Round
50. Fetch API call
Answer Here

Continue Your Mobile Development Interview Preparation

React Native interviews usually include questions related to React, JavaScript, mobile application development, APIs, databases, and software architecture. Preparing related technologies helps improve technical interview performance.

React Interview Questions
JavaScript Questions
Android Questions
TypeScript Questions

Why Learn React Native for Mobile Development?

React Native reduces mobile development time by allowing developers to reuse code between Android and iOS applications. It provides a rich ecosystem with libraries, community support, and integration with native platforms.

Knowledge of React Native helps developers build production-ready mobile applications, understand native device features, and create scalable mobile solutions.

Recommended React Native Learning Path

  • JavaScript Fundamentals
  • React Basics
  • Components and JSX
  • Props and State
  • React Hooks
  • Styling in React Native
  • Navigation
  • API Integration
  • State Management
  • Native Device Features
  • App Deployment
  • Real-Time Projects

Tips to Crack React Native Interviews

During React Native interviews, candidates should understand React fundamentals, JavaScript concepts, component lifecycle, hooks, navigation, API handling, and mobile application architecture.

Practice building mobile applications with authentication, API integration, local storage, push notifications, and performance optimization techniques.

About This React Native Interview Guide

This React Native Interview Questions and Answers guide is created to help beginners, mobile developers, and experienced programmers prepare for React Native technical interviews.

The guide covers React Native fundamentals, advanced concepts, development practices, and real-world mobile application scenarios required for modern software engineering roles.