1. Decrease Lag in Touchwiz
If you don’t see yourself using S Voice too often, you’ll find that disabling it will lead to a much smoother Touchwiz experience. Have you noticed the slight lag between hitting the home button and the home screen appearing? That’s because your Galaxy S4 thinks you might be trying to launch S Voice. To speed up the transition, open S Voice and turn off the “Open via home key” option.
Another way to speed up Touchwiz is to change a few options in the Developer Options menu. Go to Settings –> More –> About Device. Then scroll down to the build number and tap it seven times.
Now go back and you should see the Developer’s Option Menu. Turn off “Drawing,” “Window animation scale,” “Transition animation scale” and “animator duration scale.” There will be less animation now, but Touchwiz should be more responsive.
2. Prolong Your Power
So you’ve got 10% battery left and the whole night ahead of you. What do you do? It’s pretty easy: to increase your Galaxy S4’s battery life, all you need to do is turn on Power Saving Mode. You can find this option in the Quick Settings notification pane.
The feature allows you to turn on CPU power saving, screen power saving or turn off haptic feedback. For best results, try disabling all three. If that doesn’t work, turn off your data connection.
3. Enable Multiple Window Mode
If you’re a multi-tasking fiend like me, chances are you’re going to want to enable multiple window mode on your Galaxy S4. This feature allows you to run two applications at once, like email and web browsing for example.
To do so, simply hold down the back button to trigger the multi-window menu, which appears on the left hand side of the screen. Slide it out, select which apps you want to run simultaneously and enjoy!
4. Customize Your Notification Panel
From the notification pane, tap on the icon that looks like a few squares and two arrows in the very top right corner. Now tap the pencil icon that appears on the left.
From here, all you need to do is drag and drop icons around to move your most-accessed settings into the top five.
5. Enhance The Quality of Your Photos
You’d think the Galaxy S4 would take 13MP shots out of the box, but you’d be mistaken. To enable the highest quality shots, you’re going to have to set the size for 13MP by opening the camera and hitting the settings button.
6. Get 50GB of Free Cloud Storage for 24 Months
This one’s easy: to enable free cloud storage, just download Dropbox and log in. Voila! You have 50GB of free cloud storage for two years! You can enable Dropbox to upload any photo you take yo cloud storage, which means you won’t lose those photos if your phone gets lost or stolen. Yes, Google+’s photo upload feature works well, too, but Dropbox will save your photos in the highest quality.
7. Enable Air Gestures
To answer your phone simply by moving your hand above the sensor, enable Air Gestures. You can easily do this via Quick Settings.
8. Take a Screenshot
You can take a screenshot using two methods. Either hold down the power and home buttons together or swipe your palm across the screen. The latter method requires you to first enable it by going to Settings –> My Device –> Motion and gestures –>Palm Motion and switch on “Capture Screen.”
9. Block Unwanted Calls
To ensure you’re not bothered by unwanted callers, turn on “Blocking Mode” via My Device. With this enabled, you can block all incoming calls, notifications, alarms and even your LED indicator. You can either turn it on manually or set it to disable communication between specified hours of the day.
If you want to reject specific numbers, go to Settings -> My Device and under “Call” menu, go to “Auto Reject” enter a specific number, check the box next to it and you’ll never have to hear from that person again. You can even have the Galaxy S4 send a personalized meson to the person explaining why their call was rejected.
10. Enable Safety Assistance Mode
This is a great feature if you’re traveling somewhere alone and concerned something might happen to you while you’re away. By holding the volume up and the volume down keys, you can send an emergency message to predetermined contacts, as well as two photos taken by the front and rear cameras. Your phone will also send your location to your contacts. To turn it goon, go to Settings –> My Device –> Safety Assistance