Considering the popularity and success of the Samsung Galaxy S3, it's understandable that whispers of its successor (presumably called the Galaxy S4) are circulating. the Galaxy S4 is going to be a force to be reckoned with in the first half of 2013.
Samsung's latest smartphone is expected to have a 4.99-inch FHD display with 1080p resolution, a quad-core processor, 13MP camera, and Android 4.2 Jelly Bean on board as its operating system. The Galaxy S4 launch was set for March 2013.The Galaxy S4 will have a quad-core chip, which might sound a little 'last gen' to many.we'd fully expect to see the Galaxy S4 running a more mature version of Android 4.2, better known as Android Jelly Bean, as well as the next generation of TouchWiz skin on top.The buttons at the bottom of the Galaxy S4 have been slightly altered to accommodate the larger home button, but in a previously leaked rendering from a few weeks ago, the device had no visible physical buttons on its body.Seemingly more likely is that the Samsung Galaxy S4 will have wireless charging built in.
Speculation around possible price of Galaxy S4 is not so pocket friendly till now it would most probably match the price of galaxy S3. The price could be around $790.
But regarding its operating system there are mixed information coming up.Some rumors say that galaxy S4 could have android 5.0 key lime pie or Tizen OS.