KakaoTalk is an instant messenger by kakaotalk Co,. Ltd. It is a free application for Android, IOS, BlackBerry and Windows Phone. Users can download it from Amazon Appstore, Marketplace, App World and Samsung Apps. KakaoTalk services are provided through 3G, Wi-Fi, and LTE.
KakaoTalk provides free text messaging and call services. It can be used to share multimedia such as photo, video and voice files. Chat rooms are created for one-on-one use and for groups.
As KakaoTalk automatically synchronizes users’ phone numbers and adds friends on friends list, manual registration is not needed. One can also add friends manually with user ID.