? React Native Device Info

? Quick Overview

React Native Device Info is commonly used to fetch hardware, OS, and application-related details from a user's device such as model, system version, brand, and unique identifiers.

? Key Concepts

• Accessing device-specific information
• Platform-aware behavior
• Native-to-JavaScript bridge usage
• Environment-based UI logic

? Syntax / Theory

In React Native, device information is typically accessed using a third-party library that bridges native APIs to JavaScript. One of the most widely used libraries is react-native-device-info.

? Code Example(s)

// Importing DeviceInfo library
import DeviceInfo from 'react-native-device-info';

// Fetch device model
const model = DeviceInfo.getModel();

// Fetch system name
const systemName = DeviceInfo.getSystemName();

console.log(model, systemName);

?️ Live Output / Explanation

? Interactive Example

Since this is a web browser, we can't access native mobile hardware directly. However, the simulator below mimics how the react-native-device-info API works. Click the buttons to fetch "Device" info!

// How we are simulating these calls in this browser:
const isTablet = window.innerWidth > 768;
const systemName = navigator.platform;

console.log("Is Tablet:", isTablet);
console.log("System:", systemName);

? Use Cases

• Conditional UI rendering
• Device-based analytics
• Debugging device-specific issues
• Feature toggling by OS or model