hi... on the Samsung galaxy s 3, how do you video chat? do I need to download an app? on the iphone, face time was already apart of the calling system.
Video calling requires you to use an app outside of the phone dialer, and the person you're calling will need to have the same app installed and running on their phone. In addition to the stock Google Talk and Google+ apps mentioned by MrBunster, you can also download several different apps from the Play Store. Skype and Tango are two of the most popular.
Current lineup: Galaxy Note 2, Galaxy Note 8.0, MotoActv
Previous smartphones: Galaxy S3, One X, Droid RAZR MAXX, Galaxy Nexus, Rezound, Galaxy Note, iPhone 4S, Droid Bionic, Stratosphere, Droid Charge, Vitality, Droid Incredible 2, Thunderbolt, Palm Pixi Plus, Droid 3, Fascinate, Droid Incredible, Droid Pro, Droid 2 Global, Droid X, Droid, Treo Pro, Touch Pro 2, Touch Pro, Q9m, XV6800, XV6900
Previous tablets: Transformer TF300, Evo View, Transformer Prime, Transformer TF101, Thrive, gTablet