Photography is now inarguably an integral part of the mobile industry. It's one of the key considerations many prospective smartphone and tablet buyers make before going through the purchase process, and as well as the work of vendors in continually bolstering the camera hardware for a better overall performance, app developers have tried very hard to improve the software experience for the end user. One of the Galaxy S4's many exclusive features was its ability to snap images almost simultaneously using the front and rear snappers, aptly named Dual Shot, and now, the aptly named Frontback app offers a similar service to those on iOS.
