|Display - Pros & Cons|
1. The Galaxy S4 is not the first to have a 1080p full HD display. 1920 x 1080 pixels can also be found on the Sony Xperia Z and HTC One.
2. The HTC One's 1080p SuperLCD screen is best known for its color accuracy.
3. Super AMOLED, as it destined to be, shows massively contrasted and vibrant colors. Reds and Oranges just bursts out of the screen, simply colors inaccurate.
4. The blues and greens really pop.
5. A bigger screen, you have to get used to it.
6. Pentile Matrix, greenish.
7. Pentile Matrix, annoying when reading texts.
8. Who ever you are and whichever Galaxy you came from, you have to struggle with reflections under the direct sunlight.
9. Bright colors, pitch blacks, but Galaxy S4's SuperAMOLED panel struggles in bright daylight compared to LCD and IPS screens. These issues are worsened by the phone's sub par auto-brightness mode. Besides, the new Gorilla Glass causes extra reflections.
10. When it comes to Sunlight contrast ratio, Nokia 808 PureView, Apple iPhone 5 and Samsung I9300 Galaxy S III are the real winners.
11. Whites are brighter and viewing angles are better on the One.
12. Reds are a bit too saturated. Actually, Colours are rich and bold, but little oversaturated. Its a fact that AMOLED panels, in general, are more saturated in color than LCDs.
13. Though the Galaxy S4 display isn't as bright as the iPhone 5, color accuracy seems pretty dead on arrival cause its over-saturated.
14. Though its a Full HD and an impressive boost from the 720p display of the Galaxy S3, for many tasks, you probably won't notice much of a difference.
15. The HTC One has the same resolution, but its slightly smaller screen size means its pixels are filled tighter. The One boasts 468 pixels per inch (ppi), which narrowly beats the S4's 441ppi. iPhone 5 manages 326ppi.
16. S Pen won't work on the GS4 due to the lack of Wacom digitizer.
17. Most prefer the screen on the HTC One cause it looks matte like a magazine beside being accurate in color reproduction.
18. Samsung is always troubled when it comes to screen brightness settings. S4 is no exception. The GS4 cannot set the proper brightness levels its screen should be vested with. It changes suddenly and dramatically without a prior notice. You better turn automatic brightness off.
19. AMOLEDs look best when the brightness settings are set to the highest. But at lower brightnesses, its gloomy and dull. On the other hand, higher brightness levels kill the battery levels.
20. Though Gorilla Glass 3 is durable like a King Kong, the screen protector will need a case. Keys, coins and such are the usual suspects.
21. SLCD is superior to AMOLED. If your thing is the screen, then maybe a 1080p LCD2 is the one to get.
22. A considerable amount of discolouration occures when viewed from an angle (not an issue when viewed from the front). Its a familiar situation with most AMOLEDs.
23. Its hyper sensitivity, you can even swipe wearing gloves. But it only works with lighter gloves. It wont work with a thicker pair of gloves. So you'll have to take working gloves off.
24. Its larger than its 4.8-inch predecessor. But the 5-inch GS4 display is really narrower. Its just 69.8mm wide, S3 was 70.6mm. Thus it has got more vertical screen space and skinnier bezels.
25. Nokia has showed what a brighter AMOLED can do in direct sunlight. Even in them its not a dramatic enhancement.
26. Enabling the auto brightness setting in the screen option limits the maximum brightness to under 300 nits.
27. The brightness levels of the Samsung Galaxy S4 are about on par with the other AMOLEDs, which is not very high either.
28. Wearing gloves, AirViews, AirGestures, while you're holding your finger over the screen to scroll up and down, it might be interpreted as a press.
29. Giving commands with gloves, the feature first brought by Nokia on the Lumia 920.
30. The PenTile matrix which means there are only two coloured sub-pixels per pixel instead of three. So S4 cannot be compared to LCD-based Full HD handsets, such as the HTC One. Samsung' pixel principle is too basic, is using too many of one colour of pixel, or sub-pixel which is why Galaxy smartphones have had something of a blue or green tint, or been a little low-resolution when viewed close up.
31. In the front, the screen is surrounded by a diamond pattern. A distraction, it contrasts with the pitch black of the display.
|AirView & AirGesture - Pros & Cons|
 Personal Computing History rewritten, AirView and AirGestures let you input commands from the Air.
 In assistance with capacitive sensor (AirView) and IR sensor (AirGesture), phone detects when your finger is hovering over the screen, but not touching it. Litteraly, it turns your finger into an S Pen. All you have to do is just wave finger above the display and a preview of extended information of selected content in a form of a pop-up will be displayed or some functions are carried out without the intervene of a touch. For an instance, hovering finger over an email or a folder in the gallery app, you can see the content inside.
 AirView detects your fingers 1cm / 0.5" away from the display.
 AirGestures let you change tracks, swipe photos, answer calls, switch between tabs in the browser and scroll through a web page from giving commands to the phone by sweeping your hand over the screen. It turns the S4 into a mini-Kinect and can detect your hand up to 7cm (just under 3"). Wave a finger left and right to switch between items on open apps, Up and down for scrolls.
1. With "AirJump," , by waving your hand up or down, you can do page-up and page-down scrolls.
2. AirBrowse lets you switch from one browser tab to another. Just wave your hand from side to side.
3. Relocating icons can be carried out with AirMove, such as apps and calendar appointments etc to other pages by holding them with one finger and waving your free hand left or right.
With them both you can,
[A] Have information previews for SMS texts, calendar entry text, videos (pointing to a spot in the timeline), S Planner events, folders and speed dial contacts.
[B] Move between tracks in the music player (the next track in the music player by hovering over the next button and the previous with previous button).
[C] Accept a call.
[D] Move app shortcuts.
[E] Magnify links in web pages.
[F] Scroll web pages in the browser (vertical waves) and switch between open tabs (horizontal waves).
1. It was present in Galaxy Note 2 in a similar fashion, but on S4, no S Pen is needed.
2. Air view detects your fingers 1cm / 0.5" away from the display. So, no worries of your fingers accidentally tapping the screen when you intend to use Air View instead.
3. Believe it or Not, AirView will find its way into your daily life.
4. Works in Photo gallery, the dialer, Samsung's native browser, email client and Flipboard. Emails can be previewed (Emails show first lines of recieved messages.). and also lets you preview messages. So you can check you have the right thread rather than going in and then back again.
5. The ability to preview images from a gallery, when you have a plethora of photos in the Gallery, Air View becomes handy in navigating them all promptly.
6. The calendar pops up day's appointments.
7. In the video player, hovering over the progress bar, brings previews of the playing videos. The timeline brings up a thumbnail of that part of the video, allowing you to easily skip to the scenes you like. Most importantly, it wont disturb the main action.
8. You can see which speed dials are assigned to which number. The other way around is to press and find.
9. Effective than Smart Scroll.
10. Accurate and responsive.
11. It keeps track of swift and erratic movements and there's little lag or stuttering.
12. Nice for zooming in out of web pages. In the Browser, you are provided with a magnification window to view small text with ease. It magnifies texts in the browser.
13. Flipboard is the only third party app that supports AirView. You can open a small preview of items there.
14. In the Setting menu you can customize its performance, turn it on or off for emails, messages, video previews and web text magnifying etc.
15. Gimmicky or not, its actually usefull in the Calendar.
16. Enable the haptic feedback for AirView, it gives it a physical tangible response. It will be easier to navigate with Air View this way. A tiny laser pointer guides you on the lock screen when you are Air Viewing over it.
17. Soon it will have an SDK. Developers will be able to integrate the feature into their own apps.
18. Perfect for the busy, who make their meals on online recepes in haste, always dirt on their hands and thousand things on their minds. You can scroll the screen without touching the screen.
19. Good for regular eaters (or eating). Now dont have to feed the phone with dirty fingers or worry about "Fingers licking Good" or not before answering a call in the mid of a food session.
20. I started using it while I had something in my hand. It will find its own way to your daily life too.
21. Extremely usefull when your hands are wet.
22. Stop worrying, your Air Gesturing. 'Call accepting' is unnecessary while driving. All you have to do is wave the finger when accepting a call. I seriously wanted to write "Make sure that you are wearing a Handsfree". Nah! It goes automatuically to the speaker phone.
23. You can set a locked phone so that it recognize when you gesture toward it to pick it up. Doing that, when it's turned off, gives you a quick glance at such stuff like the time and unread e-mail count etc.
24. Can scroll through PDFs.
25. You can jump at large scales when scrolling through web pages. Read with leaps and bounds.
26. AirGestures, AirViews and SmartPauses, all in one.
27. Note that, only the native apps support them, third party apps will not work with them (even Chrome that comes preinstalled on the phone).
28. Air Gesture, debut in Note 2 with Quick Glance. A year old technology. But usability is expanded this time.
29. Hover your fingers near a contact in your address book, it reveals more details without your having to open the contact.
30. You can turn pages by waving your hand nearby.
1. To find the most effective way to use the feature, have to spend time fiddling with it. To use Air View properly, you have to master it. Practice holding finger inches away from the screen hovering it daily, if not hourly.
2. Useless in video scrolling. There you can slide finger on the screen to do the same which is easier to perform than Airviewing.
3. Air View only works in Samsung's native apps (Flipboard is an exception).
4. Not available on Gmail and Chrome (both standard apps of Jelly Bean though).
5. The screen is bit over sensitive. While you are Air Viewing the email client, info can pop out like pasta and screen can get cluttered. If you are sane enough, you will be irritated.
6. Its fiddly and nearly useless in the Samsung browser.
7. AirGesture, you have been warned! It's pretty often inaccurate.
8. When browsing photos not with Air Gestures but with physical touches (or doing anything similar) it can still lead to unnecessary "forwards" or backwards. Your finger on air might be misinterpreted as an Air Gesture.
9. Can answer calls with a wave of your finger over the screen, but limit it only to situations such as in a car.
10. Simply unpredictable! You will be taken backwards when you intend to go forward. Resetting or retrying the process will make things worse. It's hyper sensitive.
11. Often scroll backs when you're just moving your hands around. It sometimes tempted to jump as you point something out or showing someone a photo.
12. You might end up leaving both Air View and Air Gestures on, mostly, just to show off.
13. Takes effort than it should to be.
14. Most times, touching remains as the best option.
15. Delivered in the middle of a developing process. Not plenary.
16. AirView is well integrated. Air Gestures are much more difficult to reliably activate than AirView.
17. Maybe they will ever remain gimmics in your phone, though how much effort put into it building it at billion dollar labs of Samsung.
18. Most prominent of all cons is, "YOU CAN SIMPLY TOUCH THE PHONE!." You are paying couple of hundred bucks for waving a finger over an already touchable phone.