Samsung's Galaxy S4 is not only one of the most popular smartphones on the planet -- the company sold 10 million handsets within the first month of its release -- but also one of the most feature-rich. And while we always love a little extra bang for our buck, the additional features mean there's also a lot more to learn about the S4 than its predecessors. So if you're looking for help activating or using any of the Galaxy S4's various settings and apps, you've come to the right place.
So you love your Galaxy S4, but aren't too fond of all of the features it comes loaded with? You can quickly uninstall them by rooting your handset with the Motochopper exploit and downloading the NoBloat app from the Google Play store. Once you've rooted your handset, you can add the Multi Window Manager app to use any app in Multi Window mode.
Do you have the need for speed? You can give your Galaxy S4 a boost by disabling some of the features that bog it down including S Voice, transition animations and switching off the lock screen lighting effects. With fewer apps and features to deal with, the S4 should provide the kind of performance you should expect from a quad-core handset.
With the Galaxy S4's Dual Camera mode, you can shoot photos or videos with the back camera while capturing your reaction on the front-facer. To use the feature, switch to the Camera app's Dual Camera mode, line up your shot and tap the shutter button.
Samsung has made significant improvements to its Smart Screen functionality for the Galaxy S4, adding a new Smart Scroll feature that automatically scrolls down a Web page when you move your eyes down the screen. To enable this setting, simply open the Smart Screen menu and toggle the Smart Scroll option to on.
The Galaxy S4's Multi Windows View mode lets you split the screen between two different apps. You can enable this productivity-friendly feature by toggling it to on in the Quick Settings menu and activate it by holding down the Android Back button and dragging the appropriate icons onto the screen.
If you keep your S4 stuffed in your pocket all day, chances are you're going to miss a call on occasion. Turn on the Increase Volume in Pocket feature under the Device -> Call Settings menu, however, and the S4 will recognize when it's in your pocket and automatically increase the ringer volume so you can hear it loud and clear.
Fitness apps are all the rage today, and Samsung jumped on the bandwagon with the Galaxy S4's S Health feature. But before you can use S Health, you'll have to personalize it with your gender, height and weight, and activity profile. Just fire up the app for the first time and follow the prompts to get started.
The Galaxy S4, like many new smartphones, includes a variety of gesture controls that let you perform such tasks as waving your hand to answer a call, switching between tabs in the browser or controlling the music player. To enable them, you'll have to switch on the Air Gesture, Motion and Palm Motion features under Motion and Gestures options in the S4's Settings menu.
Want to control your TV with your smartphone? The Galaxy S4 can do just that with its built-in IR blaster and WatchOn app. But before you can use the feature, you'll have to follow the app's setup process, which asks you for your cable provider, cable box brand and TV brand.
One of the coolest features of the Galaxy S4's camera is its ability to take animated photos, which output as moving GIFs. You can do this by selecting Animated Photo mode, recording a short video and selecting the area you want to freeze. The selected area will stay completely still, while the unselected area will continue to move as it did in your original recording.
The Galaxy S4 marks the first time Samsung allows users to access its Air View function without a stylus. Once you've enabled this feature under the Device Settings menu, you can hold your finger over an email in the email widget and be provided with the message's complete heading and text.
Need to access your camera app, but don't want to have to wait to unlock your S4 to open the app? You can set the camera and up to four other apps as app shortcuts on the S4's lock screen in the Lock Screen submenu of My Device settings.