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Sinch Android VoIP SDK

Adding Android VoIP to your app is easy.

Try our robust and powerful Android VoIP SDK to add friction-free calling and messaging to your app. We take care of your backend. With our Android SDK, you can quickly and easily add real-time communications to your apps in minutes, with just a few lines of code. Signup Now and see how quickly Sinch can start connecting your users. Try Sinch for free

Android VoIP SDK



Why choose our Android VoIP SDK?

android resources

Android Friendly Resources

We have documentation and tutorials written by our developer evangelists just for Android developers like you.

android voip sdk

In App Calling

Call from within your app and keep your users in the app after the call. Call regular landline and cell phone numbers, straight from your app.

low cost

Start Free, Pay As You Grow

We offer app to phone calls and SMS at market leading prices, giving you a powerful service at a fantastic price

global reach

Multiple Devices

Our Voice API lets you connect all your app users. Integrate the Android SDK in your apps and support voice calling and instant messaging with one backbone.

The Sinch Code

See for yourself how easy it is to add our Android VoIP SDK into your app.
App to App
App to Phone
Instant Messaging
CallClient callClient = sinchClient.getCallClient();
Call call = callClient.callUser("John");
CallClient callClient = sinchClient.getCallClient();
Call call = callClient.callPhoneNumber("+14154292072");
MessageClient messageClient = sinchClient.getMessageClient();
WritableMessage message = new WritableMessage("John", "How you doing?");

Download Android Zip