Android: Learn Technology that describes Smartphone Language.

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If you want to make a phone call from android app, write below code when you want to call on any number: Intent dialIntent = new Intent(); dialIntent.setAction(Intent.ACTION_DIAL); dialIntent.setData(Uri.parse("tel:9494299494")); If you want to call on dynamic number: String number = "9494942994"; Intent dialIntent = new Intent(); dialIntent.setAction(Intent.ACTION_DIAL); dialIntent.setData(Uri.parse("tel:"+number));  Intent.ACTION_DIAL brings up the dialer, but doesn't actually make the phone call. For make directly phone call, replace action as below: dialIntent.setAction(Intent.ACTION_CALL); You'll also have to declare android.permission.PHONE_CALL permission in your AndroidManifest.xml and above Android 6 (Marshmallow), give run-time permission. For run-time permission in android, I suggest  to use TedPermission library. TedPermission is a simple permission check helper.