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1.8.3 • Public • Published

React Native Call Detection 🎉 🎊

npm version

This package helps to detect different call states like Incoming, Disconnected, Dialing and Connected for iOS. For android, this package will give following states, Offhook, Incoming, Disconnected and Missed. In the case of Incoming for android, the package will also provide with the incoming phone number.


Add the package to your react-native project in the following way

yarn add react-native-call-detection-threesigma

Integrate into an Expo managed project

  1. Install expo-dev-client:
expo install expo-dev-client
  1. Add react-native-call-detection-threesigma into the plugins array inside the app.json file of your app:
"plugins": [

For Android:-

Autolinking should work without manual changes


There are different hooks that you may get depending on the platform. Since for android you could also request the package to provide you with phone number of the caller, you will have to provide the necessary request message and the corresponding error callback. The package will request for READ_PHONE_STATE permission in android.

Its really easy to setup the package. Have a look at the following code snippet

import CallDetectorManager from 'react-native-call-detection-threesigma'

startListenerTapped() {
	this.callDetector = new CallDetectorManager((event, phoneNumber)=> {
	// For iOS event will be either "Connected",
	// "Disconnected","Dialing" and "Incoming"

	// For Android event will be either "Offhook",
	// "Disconnected", "Incoming" or "Missed"
	// phoneNumber should store caller/called number

	if (event === 'Disconnected') {
	// Do something call got disconnected
	else if (event === 'Connected') {
	// Do something call got connected
	// This clause will only be executed for iOS
	else if (event === 'Incoming') {
	// Do something call got incoming
	else if (event === 'Dialing') {
	// Do something call got dialing
	// This clause will only be executed for iOS
	else if (event === 'Offhook') {
	//Device call state: Off-hook.
	// At least one call exists that is dialing,
	// active, or on hold,
	// and no calls are ringing or waiting.
	// This clause will only be executed for Android
	else if (event === 'Missed') {
    	// Do something call got missed
    	// This clause will only be executed for Android
false, // if you want to read the phone number of the incoming call [ANDROID], otherwise false
()=>{}, // callback if your permission got denied [ANDROID] [only if you want to read incoming number] default: console.error
title: 'Phone State Permission',
message: 'This app needs access to your phone state in order to react and/or to adapt to incoming calls.'
} // a custom permission request message to explain to your user, why you need the permission [recommended] - this is the default one

stopListenerTapped() {
	this.callDetector && this.callDetector.dispose();

Dont forget to call dispose when you don't intend to use call detection, as it will avoid memory leakages.

Example project can be used to test out the package. In the example project update the HomeComponent.js with the phone number to call

  callFriendTapped() {
  // Add the telephone num to call
      .catch(err => {

How to run an example

  1. Install node and watchman

    brew install node
    brew install watchman
  2. yarn

    Install yarn from npm.

     npm i -g yarn
  3. Xcode

    Install it from the App Store.

  4. React Native Debugger

    This is an electron app that bundles react devtools, redux devtools and chrome devtools configured for use with react-native.

     brew cask install react-native-debugger
  5. Once you have done all the above steps, navigate to CallDetectionExample folder and run yarn or npm install, it will fetch all the dependencies in the node_modules folder.

  6. Run the packager npm start

  7. Update the mobile number of your friend in HomeComponent.js

     callFriendTapped() {
     // Add the telephone number
      .catch(err => {
  8. To run the example on iOS from terminal type react-native run-ios (This will open the simulator, since simulator doesnt have the support for calling I will advice you to connect your iOS device and the follow the below procedure for running the app through xcode)

    or you can also run the app from xcode, for that, open /CallDectionExample/ios/CallDetectionExample.xcodeproj in xcode and run on the device.

  9. To run the example on android, connect any android device to your mac then follow the below steps

    1. Navigate to android folder(./CallDectionExample/android/) folder and then run adb reverse tcp:8081 tcp:8081
    2. Navigate back to example directory(CallDectionExample) and then run react-native run-android

For any problems and doubt raise an issue.

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npm i react-native-call-detection-threesigma-threesigma

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