$ npm install react-native-sms-retriever-android --save

$ react-native link react-native-sms-retriever-android

1. Open up android/app/src/main/java/[...]/MainActivity.java

• Add import com.bhavesh.smsretriever.RNSmsRetrieverAndroidPackage; to the imports at the top of the file
• Add new RNSmsRetrieverAndroidPackage() to the list returned by the getPackages() method

2. Append the following lines to android/settings.gradle:

   include ':react-native-sms-retriever-android'
   project(':react-native-sms-retriever-android').projectDir = new File(rootProject.projectDir, 	'../node_modules/react-native-sms-retriever-android/android')
   

3. Insert the following lines inside the dependencies block in android/app/build.gradle:

     compile project(':react-native-sms-retriever-android')
   

import RNSmsRetrieverAndroid from 'react-native-sms-retriever-android';

/*
 * Returns app signature array, which is used to identify the SMS sent from your server
 * callback: (optional) to receive signature array
 */
const signatureArray = await RNSmsRetrieverAndroid.getAppSignature(callback);

/*
 * Subscribe to listen for incoming SMS
 * listener: ({ message: string, error: string, code: number}) => void
 * callback: (optional) to check if subscription was successful or not
 */
const subscription = await RNSmsRetrieverAndroid.retrieveSMS(listener, callback);

// To remove subscription
subscription.remove();

1. App signature will vary for debug and release builds

2. Subscription will be valid for one time only. To listen for next sms, subscribe again

3. Subscription is valid for 5 minutes. After that listener will receive timeout error

4. Example SMS: "<#> Your ExampleApp code is: 123ABC78 FA+9qCX9VSu"

   FA+9qCX9VSu => This is your app signature