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44

To understand why Nexus 7 can show more content than the Galaxy Nexus, I'll first explain two concepts: screen density and density-independent-pixel. But before we go into technical details, it may be worth to clarify the design goals of using density-independent-pixels. The goal is to define a UI that is similar in dimension across devices, regardless of ...


23

This appears to be called EdgeEffect and is used as a visual indicator when the user over-scrolls. See relevant images on Google Images here. A book commenting on the glow effect produces. A question on Stack Overflow.


17

Samsung removed "Stay Awake" from TouchWiz back in the first OTA for the Galaxy S1. Other ROMs like CyanogenMod still have it, and other AOSP based ROMs as well. Be very careful using any kind of "Stay Awake" options with these devices that have the Super AMOLED screens. I used to use it when developing and testing the apps. I now have a "burn" in the ...


14

You don't have to continue working blindly, you can use Droid@Screen: it shows the screen of a real or emulated Android device on a computer running Windows, Mac OS or Linux. Droid@Screen is a stand-alone Java Swing GUI application that shows the screen of an Android device on a computer. Its author says that its typical usage is showing an app demo or ...


14

Capacitive and resistive touchscreen technologies Today's multi-touch screens are capacitive, unlike the resistive touchscreens from a decade ago. They work a bit like the way you can feel a static charge with the hair on your skin. The screen has a charge inside it, and when your finger comes near it, the capacitance of your finger attracts this charge. ...


14

Notes: My solution is tested on Stock Android 4.4.2 and Stock CyanogenOS 12 (5.0) of OnePlus One, and should work for Android 4.3 and above (based on this answer). I've mentioned wherever root access is required. This answer has been taken from my answer on a bit different question here. I have used the following comment as the ground to work on: The ...


12

It depends, some Android devices have an advanced setting WiFi Sleep Policy under Settings -> Wireless -> Wi-Fi Settings -> [Menu Button] Advanced -> Wi-Fi Sleep Policy But I am not sure if this is a vanilla Android feature or an manufacturer modification. At least the Galaxy S series has this setting. Data networks are usually fully active. ...


12

There are some hotkeys listed for ICS, which hopefully still work with Kitkat: Rotating the screen: (to get that operate we must to have activated “Auto-rotate screen”) Press F12 two times in less than 2 seconds = Rotate 90º to the LEFT. Press F11 two times in less than 2 seconds = Rotate 90º to the RiGHT. Press F10 two times in less than 2 ...


11

I have checked on my two Ice Cream Sandwich Devices (Stock Xoom and Droid 3 running CM9 Beta). I have, under Settings > Developer Options a Stay Awake option. Which keeps your device awake when charging. This will work if your device charges over USB (my Xoom does not, for instance). However, should this option not be there, we can turn to apps for help!...


11

There just was a Blog on Land of Droid covering this issue. The author summed up a few conditions under which this "flicker" occurs: back-light is dimmed under 30% a weak WiFi signal the device is accessing the net According to that report, these 3 things are "AND-connected" (i.e. the flicker occurs when all of the 3 conditions are met). He's also hoping ...


9

At least in vanilla ICS it's in Settings -> Developer options -> Stay awake, correct me if it's not there in GSIII. If it's not there, you can try a couple of apps that can do this, at least on older Galaxy series phones. StayAwake Stay Awake Widget


9

As suggested already, this graphical "shadow" effect is Edge Glow colour, and its part of the material design by Google. After the introduction of material design by Google many new UI elements have been introduced. Material design is based on the interaction and movement of colours and objects in real world rather than synthetic unnatural phenomenon. ...


8

SnooZy Charger (also in the Play Store) takes care of this. The free app (as in beer and speech) that lets you manage behavior during charger connection and disconnection. It requires no permissions, but does require you giving it device admin permissions. These permissions are only used for to control device locking, as verifiable in its source-code. From ...


8

It seems like others have had this problem as well: http://www.reddit.com/r/GalaxyNexus/comments/19y0a9/galaxy_nexus_screen_turn_on_durring_lock_screen/ http://productforums.google.com/forum/#!topic/mobile/PA5JZH-Oj4o http://code.google.com/p/android/issues/detail?id=39625 It is a bug in Android 4.2, specifically with the Samsung Galaxy Nexus. I imagine ...


7

That's because the pixels per inch (PPI) is different between them. The higher the PPI, the higher the quality but at a cost of (relative) smaller screen size. So the Nexus 7 has 216 pixels per inch while the Galaxy Nexus has 316 pixels per inch. The resolution isn't everything, you also have to consider the density of the pixels. High PPI values have the ...


7

The 1280x800 pixels count for the whole display, including the black bar for the buttons. Google decided to stay flexible by moving physical buttons to the touch screen permanently. Benefits: No capacitive buttons needed (cheaper?) Better user experience: Rotating 90,180,270 degrees rotates also the virtual buttons Less frame space (the button's space ...


7

You can always use some mathematics to obtain screen size: X = sqrt ( Z^2 / (1 + (VR/HR)^2) ) where: sqrt = Square Root √‾‾‾ X = screen width Z = diagonal screen size (7" for Nexus 7) VR = vertical resolution HR = horizontal resolution which for Nexus 7, we have: Z = 7" VR = 1280 HR = 800 so: X = sqrt ( 49 / 3.56) X = 3.71 ...


7

In Settings, go to Developer options and un-check the Show CPU usage:


7

Since Android 5.0 Lollipop, the feature is built-in as one of accessibility options. Open Settings Select Accessibility Below Display section, toggle Color inversion. After toggling it for the first time, the "Invert colors" toggle will be added to the quick settings menu.


6

ICS (Android 4.0) includes the capability for "Screen Candy" that is special screens or animations that only present themselves when the phone is idle and plugged in or docked. By default, this is a hidden (disabled in most stock roms, I'd wager) feature called "Android Dreams" but enabled in most custom roms (such as AOKP or Codename Android). http://www....


6

I don't know how to turn the screen off completely but setting the screen brightness to the lowest possible value will help with battery life. Settings->Display->Brightness


6

The Samsung Galaxy S II does not have this feature, and never has, because of its AMOLED screen. They burn (like CRTs) if they have the same picture on the screen for too long. For some reason apps can still lock the screen on, but you can't do it from settings. (My Samsung Galaxy S II has burn in from the notification bar.) You can use StayAwake, just ...


6

There's an option to keep your screen lit while charging, try: Settings -> Developer Options -> Stay Awake


6

With Tasker you can automate this to have different screen time-out values depending whether or not your phone is connected to a power source: Create a new Profile and name it "Screen Timeout". For Context select State -> Power -> Power. Select "Any" for source and press the OK button. Tap "New Task", name it "Increase Timeout" and tap the "OK" button. Tap ...


6

You already pointed to the correct lines -- the interesting ones are the two immediately before it: 10-01 18:25:44.391 V/AlarmManager( 279): sending alarm Alarm{40d4f110 type 0 com.gau.go.launcherex.theme.GalaxySTheme} 10-01 18:25:44.391 V/AlarmManager( 279): pending wakeup alarm com.gau.go.launcherex.theme.GalaxySTheme 10-01 18:25:44.411 E/power ( 279)...


6

The screen size is 151mm * 94mm http://forum.xda-developers.com/showthread.php?t=1760938


6

As life of LCD screen is measured in hours of its usage, keeping screen turned on does consume some of its life hours. But, average life of LCD screens range from 30,000 hours to 60,000 hours, so I don't think it would a matter to you.


6

If you know for sure your phone can be powered on, then there might just be another doable (albeit technical) way. I've extracted photos and contacts from another S4 of my classmate a while ago using this. I'll describe it and let you decide whether you can handle it. While in the blind, get to Download Mode by using the key combo. Load a custom recovery ...


5

The S2 has Samsung's toughened Gorilla Glass screen, see the videos in this answer to a previous question for attempts to scratch the Gorilla Glass on an original Galaxy S: https://android.stackexchange.com/questions/2756/looking-for-a-robust-android-smartphone/2777#2777 I can say that I've had an original Galaxy S for over a year now, and regularly keep it ...


5

You probably have a diagonal screen size, and a resolution. Use the Pythagorean Theorem on the resolution and divide the result by the screen size to get the DPI. For example, my Vibrant is 4", 800x480. sqrt(8002 + 4802) / 4 = ~233 dpi.


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