Internet calling service Skype has released an app for the Android phones that will allow users to make phone calls using either a WiFi or a mobile data connection.

Android phone owners can now make Skype to Skype calls for free, and can pay to make calls to other landline or mobile phones. In addition, the Skype app will let users to send and receive instant messages, synchronize with the contact list on a hanset and show when other users of Skype are online.

However, the new Skype app has been limited to WiFi only in the United States.

Back in March, Verizon introduced its own edition of Skype for Android. Other then Android, the Skype app is now available on handsets running iOS and Symbian operating systems.

Speaking on the topic, product manager Mark Douglas said, "With the addition of Android, we are pleased that Skype is now available on three of the most popular mobile platforms today: Android, iOS and Symbian.”

The Skype Android app runs only on the 2.1 and 2.2 version of the Google’s Android mobile phone operating system.