react-native-device-info

Device Information for React Native.

TOC

• Installation
• Linking
• Usage
• API
• Troubleshooting
• Release Notes
• react-native-dom / react-native-web

Installation

Using npm:

npm install --save react-native-device-info

or using yarn:

yarn add react-native-device-info

⚠️ If you are on React Native > 0.47, you must use version 0.11.0 of this library or higher

Linking

Automatic

react-native link react-native-device-info

(or using rnpm for versions of React Native < 0.27)

rnpm link react-native-device-info

For iOS users using Pods You still need to run pod install after running the above link command inside your IOS folder.

Manual

Add the following line to your build targets in your Podfile

pod 'RNDeviceInfo', :path => '../node_modules/react-native-device-info'

Then run pod install

In XCode, in the project navigator:

• Right click Libraries
• Add Files to [your project's name]
• Go to node_modules/react-native-device-info/ios
• Add the file RNDeviceInfo.xcodeproj

In XCode, in the project navigator, select your project.

• Add the libRNDeviceInfo.a from the deviceinfo project to your project's Build Phases ➜ Link Binary With Libraries
• Click .xcodeproj file you added before in the project navigator and go the Build Settings tab. Make sure All is toggled on (instead of Basic).
• Look for Header Search Paths and make sure it contains both $(SRCROOT)/../react-native/React and $(SRCROOT)/../../React
• Mark both as recursive (should be OK by default).

Run your project (Cmd+R)

(Thanks to @brysgo for writing the instructions)

• optional in android/build.gradle:

...
  ext {
    // dependency versions
    googlePlayServicesVersion = "<Your play services version>" // default: "+"
    compileSdkVersion = "<Your compile SDK version>" // default: 23
    buildToolsVersion = "<Your build tools version>" // default: "25.0.2"
    targetSdkVersion = "<Your target SDK version>" // default: 22
  }
...

• in android/app/build.gradle:

dependencies {
    ...
    implementation "com.facebook.react:react-native:+"  // From node_modules
+   implementation project(':react-native-device-info')
}

• in android/settings.gradle:

...
include ':app'
+ include ':react-native-device-info'
+ project(':react-native-device-info').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-device-info/android')

With React Native 0.29+

• in MainApplication.java:

+ import com.learnium.RNDeviceInfo.RNDeviceInfo;

  public class MainApplication extends Application implements ReactApplication {
    //......

    @Override
    protected List<ReactPackage> getPackages() {
      return Arrays.<ReactPackage>asList(
+         new RNDeviceInfo(),
          new MainReactPackage()
      );
    }

    ......
  }

With older versions of React Native:

• in MainActivity.java:

+ import com.learnium.RNDeviceInfo.RNDeviceInfo;

  public class MainActivity extends ReactActivity {
    ......

    @Override
    protected List<ReactPackage> getPackages() {
      return Arrays.<ReactPackage>asList(
+       new RNDeviceInfo(),
        new MainReactPackage()
      );
    }
  }

NOTE: If you faced with this error: Could not resolve all files for configuration ':react-native-device-info:debugCompileClasspath'., in build.gradle put google() in the first line (according to https://stackoverflow.com/a/50748249)

• in android/build.gradle:

allprojects {
    repositories {
+       google()
        ...
    }
}

(Thanks to @chirag04 for writing the instructions)

• Open the solution in Visual Studio for your Windows apps
• right click your in the Explorer and click Add > Existing Project...
• Navigate to ./<app-name>/node_modules/react-native-device-info/windows/RNDeviceInfo and add RNDeviceInfo.csproj
• this time right click on your React Native Windows app under your solutions directory and click Add > Reference...
• check the RNDeviceInfo you just added and press ok
• open up MainReactNativeHost.cs for your app and edit the file like so:

+ using RNDeviceInfo;
......
        protected override List<IReactPackage> Packages => new List<IReactPackage>
        {
            new MainReactPackage(),
+           new RNDeviceInfoPackage(),
        };

(Thanks to @josephan for writing the instructions)

Usage

import DeviceInfo from 'react-native-device-info';

API

| Method | Return Type |  iOS | Android | Windows | Since | | ----------------------------------------------------------------- | ------------------- | :--: | :-----: | :-----: | ------ | | getAPILevel() | number | ❌ | ✅ | ❌ | 0.12.0 | | getApplicationName() | string | ✅ | ✅ | ✅ | 0.14.0 | | getBatteryLevel() | Promise<number> | ✅ | ✅ | ✅ | 0.18.0 | | getBrand() | string | ✅ | ✅ | ✅ | 0.9.3 | | getBuildNumber() | string | ✅ | ✅ | ✅ | ? | | getBundleId() | string | ✅ | ✅ | ✅ | ? | | getCameraPresence() | Promise<boolean> | ❌ | ✅ | ✅ | ? | | getCarrier() | string | ✅ | ✅ | ❌ | 0.13.0 | | getDeviceCountry() | string | ✅ | ✅ | ✅ | 0.9.0 | | getDeviceId() | string | ✅ | ✅ | ✅ | 0.5.0 | | getDeviceLocale() | string | ✅ | ✅ | ✅ | 0.7.0 | | getPreferredLocales() | Array<string> | ✅ | ✅ | ❌ | ? | | getDeviceName() | string | ✅ | ✅ | ✅ | ? | | getFirstInstallTime() | number | ❌ | ✅ | ✅ | 0.12.0 | | getFontScale() | number | ✅ | ✅ | ❌ | 0.15.0 | | getFreeDiskStorage() | number | ✅ | ✅ | ❌ | 0.15.0 | | getIPAddress() | Promise<string> | ✅ | ✅ | ✅ | 0.12.0 | | getInstallReferrer() | string | ❌ | ✅ | ❌ | 0.19.0 | | getInstanceID() | string | ❌ | ✅ | ❌ | ? | | getLastUpdateTime() | number | ❌ | ✅ | ❌ | 0.12.0 | | getMACAddress() | Promise<string> | ✅ | ✅ | ❌ | 0.12.0 | | getManufacturer() | string | ✅ | ✅ | ✅ | ? | | getMaxMemory() | number | ❌ | ✅ | ✅ | 0.14.0 | | getModel() | string | ✅ | ✅ | ✅ | ? | | getPhoneNumber() | string | ❌ | ✅ | ❌ | 0.12.0 | | getPowerState() | Promise<object> | ✅ | ❌ | ❌ | | | getReadableVersion() | string | ✅ | ✅ | ✅ | ? | | getSerialNumber() | string | ❌ | ✅ | ❌ | 0.12.0 | | getSystemName() | string | ✅ | ✅ | ✅ | ? | | getSystemVersion() | string | ✅ | ✅ | ✅ | ? | | getBuildId() | string | ✅ | ✅ | ❌ | ? | | getTimezone() | string | ✅ | ✅ | ✅ | ? | | getTotalDiskCapacity() | number | ✅ | ✅ | ❌ | 0.15.0 | | getTotalMemory() | number | ✅ | ✅ | ❌ | 0.14.0 | | getUniqueID() | string | ✅ | ✅ | ✅ | ? | | getUserAgent() | string | ✅ | ✅ | ❌ | 0.7.0 | | getVersion() | string | ✅ | ✅ | ✅ | ? | | is24Hour() | boolean | ✅ | ✅ | ✅ | 0.13.0 | | isAirPlaneMode() | Promise<boolean> | ❌ | ✅ | ❌ | 0.25.0 | | isBatteryCharging() | Promise<boolean> | ✅ | ✅ | ❌ | 0.27.0 | | isEmulator() | boolean | ✅ | ✅ | ✅ | ? | | isPinOrFingerprintSet() | (callback)boolean | ✅ | ✅ | ✅ | 0.10.1 | | isTablet() | boolean | ✅ | ✅ | ✅ | ? | | hasNotch() | boolean | ✅ | ✅ | ✅ | 0.23.0 | | isLandscape() | boolean | ✅ | ✅ | ✅ | 0.24.0 | | getDeviceType() | string | ✅ | ✅ | ❌ | ? | | isAutoDateAndTime() | Promise<boolean> | ❌ | ✅ | ❌ | 0.29.0 | | isAutoTimeZone() | Promise<boolean> | ❌ | ✅ | ❌ | 0.29.0 | | supportedABIs() | string[] | ✅ | ✅ | ❌ | 1.1.0 | | hasSystemFeature() | Promise<boolean> | ❌ | ✅ | ❌ | ? | | getSystemAvailableFeatures() | Promise<string[]> | ❌ | ✅ | ❌ | ? | | isLocationEnabled() | Promise<boolean> | ✅ | ✅ | ❌ | ? | | getAvailableLocationProviders() | Promise<Object> | ✅ | ✅ | ❌ | ? |

getAPILevel()

Gets the API level.

Examples

const apiLevel = DeviceInfo.getAPILevel();

// iOS: ?
// Android: 25
// Windows: ?

Notes

See API Levels

getApplicationName()

Gets the application name.

Examples

const appName = DeviceInfo.getApplicationName(); // "Learnium Mobile"

getBatteryLevel()

Gets the battery level of the device as a float comprised between 0 and 1.

Examples

DeviceInfo.getBatteryLevel().then(batteryLevel => {
  // 0.759999
});

Notes

To be able to get actual battery level enable battery monitoring mode for application. Add this code:

[UIDevice currentDevice].batteryMonitoringEnabled = true;

to AppDelegate.m application:didFinishLaunchingWithOptions:

Returns -1 on the iOS Simulator

getBrand()

Gets the device brand.

Examples

const brand = DeviceInfo.getBrand();

// iOS: "Apple"
// Android: "Xiaomi"
// Windows: ?

getBuildNumber()

Gets the application build number.

Examples

const buildNumber = DeviceInfo.getBuildNumber();

// iOS: "89"
// Android: 4
// Windows: ?

Notes

There is a type inconsistency: Android return an integer instead of the documented string.

getBundleId()

Gets the application bundle identifier.

Examples

const bundleId = DeviceInfo.getBundleId(); // "com.learnium.mobile"

getCameraPresence()

Tells if the device have any camera now.

Examples

DeviceInfo.getCameraPresence()
  .then(isCameraPresent => {
    // true or false
  })
  .catch(cameraAccessException => {
    // is thrown if a camera device could not be queried or opened by the CameraManager on Android
  });

Notes

• Hot add/remove of camera is supported.
• Returns the status of the physical presence of the camera. If camera present but your app don't have permissions to use it, getCameraPresence will still return the true

getCarrier()

Gets the carrier name (network operator).

Examples

const carrier = DeviceInfo.getCarrier(); // "SOFTBANK"

getDeviceCountry()

Gets the device country based on the locale information.

Examples

const deviceCountry = DeviceInfo.getDeviceCountry(); // "US"

getDeviceId()

Gets the device ID.

Examples

const deviceId = DeviceInfo.getDeviceId();

// iOS: "iPhone7,2"
// Android: "goldfish"
// Windows: ?

getDeviceLocale()

Gets the device locale.

Examples

const deviceLocale = DeviceInfo.getDeviceLocale();

// iOS: "en"
// Android: "en-US"
// Windows: ?

getPreferredLocales()

Gets the preferred locales defined by the user.

Examples

const preferredLocales = DeviceInfo.getPreferredLocales();

// iOS: "[es-ES, en-US]"
// Android: "[es-ES, en-US]"
// Windows: ?

getDeviceName()

Gets the device name.

Examples

const deviceName = DeviceInfo.getDeviceName();

// iOS: "Becca's iPhone 6"
// Android: ?
// Windows: ?

Android Permissions

• android.permission.BLUETOOTH

getFirstInstallTime()

Gets the time at which the app was first installed, in milliseconds.

Examples

const firstInstallTime = DeviceInfo.getFirstInstallTime();

// Android: 1517681764528

getFontScale()

Gets the device font scale. The font scale is the ratio of the current system font to the "normal" font size, so if normal text is 10pt and the system font is currently 15pt, the font scale would be 1.5 This can be used to determine if accessability settings has been changed for the device; you may want to re-layout certain views if the font scale is significantly larger ( > 2.0 )

In iOS App Extensions this call always returns 1.0, see #625.

Examples

const fontScale = DeviceInfo.getFontScale(); // 1.2

getFreeDiskStorage()

Gets available storage size, in bytes.

Examples

const freeDiskStorage = DeviceInfo.getFreeDiskStorage();

// Android: 17179869184
// iOS: 17179869184

Notes

From developer.android.com:

Return the primary shared/external storage directory.

Note: don't be confused by the word "external" here. This directory can better be thought as media/shared storage. It is a filesystem that can hold a relatively large amount of data and that is shared across all applications (does not enforce permissions). Traditionally this is an SD card, but it may also be implemented as built-in storage in a device that is distinct from the protected internal storage and can be mounted as a filesystem on a computer.

getIPAddress()

Gets the device current IP address.

Examples

DeviceInfo.getIPAddress().then(ip => {
  // "92.168.32.44"
});

Android Permissions

• android.permission.ACCESS_WIFI_STATE

Notes

Support for iOS was added in 0.22.0

getInstallReferrer()

Gets the referrer string upon application installation.

Examples

const referrer = DeviceInfo.getInstallReferrer();

// If the app was installed from https://play.google.com/store/apps/details?id=com.myapp&referrer=my_install_referrer
// the result will be "my_install_referrer"

getInstanceID()

Gets the application instance ID.

Examples

const instanceId = DeviceInfo.getInstanceID();

// Android: ?

Notes

See https://developers.google.com/instance-id/

getLastUpdateTime()

Gets the time at which the app was last updated, in milliseconds.

Examples

const lastUpdateTime = DeviceInfo.getLastUpdateTime();

// Android: 1517681764992

getMACAddress()

Gets the network adapter MAC address.

Examples

DeviceInfo.getMACAddress().then(mac => {
  // "E5:12:D8:E5:69:97"
});

Android Permissions

• android.permission.ACCESS_WIFI_STATE

Notes

iOS: This method always return "02:00:00:00:00:00" as retrieving the MAC address is disabled since iOS 7

getManufacturer()

Gets the device manufacturer.

Examples

const manufacturer = DeviceInfo.getManufacturer();

// iOS: "Apple"
// Android: "Google"
// Windows: ?

getMaxMemory()

Returns the maximum amount of memory that the VM will attempt to use, in bytes.

Examples

const maxMemory = DeviceInfo.getMaxMemory(); // 402653183

getModel()

Gets the device model.

iOS warning: The list with device names is maintained by the community and could lag new devices. It is recommended to use getDeviceId() since it's more reliable and always up-to-date with new iOS devices. We do accept pull requests that add new iOS devices to the list with device names.

Examples

const model = DeviceInfo.getModel();

// iOS: ?
// Android: ?
// Windows: ?

getPhoneNumber()

Gets the device phone number.

Examples

const phoneNumber = DeviceInfo.getPhoneNumber();

// Android: null return: no permission, empty string: unprogrammed or empty SIM1, e.g. "+15555215558": normal return value

Android Permissions

• android.permission.READ_PHONE_STATE

Notes

This can return undefined in certain cases and should not be relied on. SO entry on the subject.

getPowerState()

Gets the power state of the device including the battery level, whether it is plugged in, and if the system is currently operating in low power mode. Displays a warning on iOS if battery monitoring not enabled, or if attempted on an emulator (where monitoring is not possible)

Examples

DeviceInfo.getPowerState().then(state => {
  // {
  //   batteryLevel: 0.759999,
  //   batteryState: 'unplugged',
  //   lowPowerMode: false,
  // }
});

getReadableVersion()

Gets the application human readable version.

Examples

const readableVersion = DeviceInfo.getReadableVersion();

// iOS: 1.0.1
// Android: 1.0.1
// Windows: ?

getSerialNumber()

Gets the device serial number.

Examples

const serialNumber = DeviceInfo.getSerialNumber();

// iOS: undefined
// Android: ?
// Windows: ?

getSystemName()

Gets the device OS name.

Examples

const systemName = DeviceInfo.getSystemName();

// iOS: "iOS" on newer iOS devices "iPhone OS" on older devices, including older iPad's.
// Android: "Android"
// Windows: ?

getSystemVersion()

Gets the device OS version.

Examples

const systemVersion = DeviceInfo.getSystemVersion();

// iOS: "11.0"
// Android: "7.1.1"
// Windows: ?

getBuildId()

Gets build number of the operating system.

Examples

const osBuildId = DeviceInfo.getBuildId();

// iOS: "12A269"
// tvOS: not available
// Android: "13D15"
// Windows: not available

getTimezone()

Gets the device default timezone.

Examples

const timezone = DeviceInfo.getTimezone(); // "Africa/Tunis"

getTotalDiskCapacity()

Gets full disk storage size, in bytes.

Examples

const storageSize = DeviceInfo.getTotalDiskCapacity();

// Android: 17179869184
// iOS: 17179869184

getTotalMemory()

Gets the device total memory, in bytes.

Examples

const totalMemory = DeviceInfo.getTotalMemory(); // 1995018240

getUniqueID()

Gets the device unique ID.

Examples

const uniqueId = DeviceInfo.getUniqueID();

// iOS: "FCDBD8EF-62FC-4ECB-B2F5-92C9E79AC7F9"
// Android: "dd96dec43fb81c97"
// Windows: ?

Notes

• iOS: This is IDFV so it will change if all apps from the current apps vendor have been previously uninstalled.
• android: Prior to Oreo, this id (ANDROID_ID) will always be the same once you set up your phone.

getUserAgent()

Gets the device User Agent.

Examples

const userAgent = DeviceInfo.getUserAgent();

// iOS: "Mozilla/5.0 (iPhone; CPU iPhone OS 9_1 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 Mobile/13B143"
// tvOS: not available
// Android: ?
// Windows: ?

getVersion()

Gets the application version.

Examples

const version = DeviceInfo.getVersion();

// iOS: "1.0"
// Android: "1.0"
// Windows: ?

is24Hour()

Tells if the user preference is set to 24-hour format.

Examples

const is24Hour = DeviceInfo.is24Hour(); // true

isAirPlaneMode()

Tells if the device is in AirPlaneMode.

Examples

DeviceInfo.isAirPlaneMode().then(airPlaneModeOn => {
  // false
});

Notes

• This only works if the remote debugger is disabled.

isBatteryCharging()

Tells if the battery is currently charging.

Examples

DeviceInfo.isBatteryCharging().then(isCharging => {
  // true or false
});

isEmulator()

Tells if the application is running in an emulator.

Examples

const isEmulator = DeviceInfo.isEmulator(); // false

isPinOrFingerprintSet()

Tells if a PIN number or a fingerprint was set for the device.

Examples

DeviceInfo.isPinOrFingerprintSet()(isPinOrFingerprintSet => {
  if (!isPinOrFingerprintSet) {
    // ...
  }
});

Notes

• Since the device setting for PIN/Fingerprint can be modified while the app is still open, this is available via callback instead of as a constant.
• iOS: Not supported for iOS < 9

isTablet()

Tells if the device is a tablet.

Examples

const isTablet = DeviceInfo.isTablet(); // true

isLandscape()

Tells if the device is currently in landscape mode.

Examples

const isLandscape = DeviceInfo.isLandscape(); // true

hasNotch()

Tells if the device has a notch.

Examples

const hasNotch = DeviceInfo.hasNotch(); // true

getDeviceType()

Returns the device's type as a string, which will be one of:

• Handset
• Tablet
• Tv
• Unknown

Examples

const deviceType = DeviceInfo.getDeviceType(); // 'Handset'

isAutoDateAndTime()

Tells if the automatic date & time setting is enabled on the phone.

Examples

DeviceInfo.isAutoDateAndTime().then(isAutoDateAndTime => {
  // true or false
});

isAutoTimeZone()

Tells if the automatic time zone setting is enabled on the phone.

Examples

DeviceInfo.isAutoTimeZone().then(isAutoTimeZone => {
  // true or false
});

supportedABIs()

Returns a list of supported processor architecture version

Examples

DeviceInfo.supportedABIs(); // [ "arm64 v8", "Intel x86-64h Haswell", "arm64-v8a", "armeabi-v7a", "armeabi" ]

hasSystemFeature(feature)

Tells if the device has a specific system feature.

Examples

DeviceInfo.hasSystemFeature('amazon.hardware.fire_tv').then(hasFeature => {
  // true or false
}); 

getSystemAvailableFeatures()

Returns a list of available system features on Android.

Examples

DeviceInfo.getSystemAvailableFeatures().then(features => {
  // ["android.software.backup", "android.hardware.screen.landscape", "android.hardware.wifi", ...]
}); 

isLocationEnabled()

Tells if the device has location services turned off at the device-level (NOT related to app-specific permissions)

Examples

DeviceInfo.isLocationEnabled().then(enabled => {
  // true or false
});

getAvailableLocationProviders()

Returns an object of platform-specfic location providers/servcies, with boolean value whether or not they are currently available.

NOTE: This function requires access to the Location permission on Android

Android Example

DeviceInfo.getAvailableLocationProviders().then(providers => {
  // {
  //   gps: true
  //   network: true
  //   passive: true
  // }
});

iOS Example

DeviceInfo.getAvailableLocationProviders().then(providers => {
  // {
  //   headingAvailable: false
  //   isRangingAvailable: false
  //   locationServicesEnabled: true
  //   significantLocationChangeMonitoringAvailable: true
  // }
});

Events

Currently iOS-only.

batteryLevelDidChange

Fired when the battery level changes; sent no more frequently than once per minute.

Examples

import { NativeEventEmitter, NativeModules } from 'react-native'
const deviceInfoEmitter = new NativeEventEmitter(NativeModules.RNDeviceInfo)

deviceInfoEmitter.addListener('batteryLevelDidChange', level => {
  // 0.759999
});

batteryLevelIsLow

Fired when the battery drops below 20%.

Examples

import { NativeEventEmitter, NativeModules } from 'react-native'
const deviceInfoEmitter = new NativeEventEmitter(NativeModules.RNDeviceInfo)

deviceInfoEmitter.addListener('batteryLevelIsLow', level => {
  // 0.19
});

powerStateDidChange

Fired when the battery state changes, for example when the device enters charging mode or is unplugged.

Examples

import { NativeEventEmitter, NativeModules } from 'react-native'
const deviceInfoEmitter = new NativeEventEmitter(NativeModules.RNDeviceInfo)

deviceInfoEmitter.addListener('powerStateDidChange', { batteryState } => {
  // 'charging'
});

Troubleshooting

When installing or using react-native-device-info, you may encounter the following problems:

react-native-device-info uses com.google.android.gms:play-services-gcm to provide [getInstance()][#getinstance]. This can lead to conflicts when building the Android application.

If you're using a different version of com.google.android.gms:play-services-gcm in your app, you can define the googlePlayServicesVersion gradle variable in your build.gradle file to tell react-native-device-info what version it should require. See the example project included here for a sample.

If you're using a different library that conflicts with com.google.android.gms:play-services-gcm, and you are certain you know what you are doing such that you will avoid version conflicts, you can simply ignore this dependency in your gradle file:

 compile(project(':react-native-device-info')) {
    exclude group: 'com.google.android.gms'
}

Seems to be a bug caused by react-native link. You can manually delete libRNDeviceInfo-tvOS.a in Xcode -> [Your iOS build target] -> Build Phrases -> Link Binary with Libraries.

This is a system level log that may be turned off by executing: xcrun simctl spawn booted log config --mode "level:off" --subsystem com.apple.CoreTelephony. To undo the command, you can execute: xcrun simctl spawn booted log config --mode "level:info" --subsystem com.apple.CoreTelephony

You may need to adjust your Podfile like this if you use Cocoapods and have undefined symbols or duplicate React definitions

target 'yourTargetName' do
  # See http://facebook.github.io/react-native/docs/integration-with-existing-apps.html#configuring-cocoapods-dependencies
  pod 'React', :path => '../node_modules/react-native', :subspecs => [
    'Core',
    'CxxBridge', # Include this for RN >= 0.47
    'DevSupport', # Include this to enable In-App Devmenu if RN >= 0.43
    'RCTText',
    'RCTNetwork',
    'RCTWebSocket', # Needed for debugging
    'RCTAnimation', # Needed for FlatList and animations running on native UI thread
    # Add any other subspecs you want to use in your project
  ]

  # Explicitly include Yoga if you are using RN >= 0.42.0
  pod 'yoga', :path => '../node_modules/react-native/ReactCommon/yoga'

  # Third party deps podspec link - you may have multiple pods here, just an example
  pod 'RNDeviceInfo', path: '../node_modules/react-native-device-info'

end

# if you see errors about React duplicate definitions, this fixes it. The same works for yoga.
post_install do |installer|
  installer.pods_project.targets.each do |target|
    if target.name == "React"
      target.remove_from_project
    end
  end
end

react-native-device-info contains native code, and needs to be mocked. Jest Snapshot support may work though.

Here's how to do it with jest for example:

// in your package.json:
"jest": {
  "setupFiles": [
    "./testenv.js"
  ],


// testenv.js:
jest.mock('react-native-device-info', () => {
  return {
    getModel: jest.fn(),
  };
});

Some of the APIs (like getBatteryState) will throw warnings in certain conditions like on tvOS or the iOS emulator. This won't be visible in production but even in development it may be irritating. It is useful to have the warnings because these devices return no state, and that can be surprising, leading to github support issues. The warnings is intended to educate you as a developer. If the warnings are troublesome you may try this in your code to suppress them:

import { YellowBox } from 'react-native';
YellowBox.ignoreWarnings(['Battery state']);

Release Notes

See the CHANGELOG.md.

Contributing

Please see the contributing guide.

react-native-dom

As a courtesy to developers, this library was made compatible in v0.21.6 with react-native-dom and react-native-web by providing an empty polyfill in order to avoid breaking builds.

Only getUserAgent() will return a correct value. All other API methods will return an "empty" value of its documented return type: 0 for numbers, '' for strings, false for booleans.