Q1) I didn’t receive OTA update and i am on unrooted stock firmware?
A Go to Settings > Apps > All > Google Services Framework, clear data, then go to Settings > About phone > System update > Check now. repeat procedure many times.
Q2) Kies program does not recognize my Gnex, i want to update firmware?
A Gnex firmware is not supported by Samsung Kies. it is updated directly from Google.
Q3) Can i make a screen shot on stock firmware?
A Yes you can! user doesn’t need to root the device or employ third-party apps just to take a photo of what’s happening on screen. Taking a screenshot is simple, just press the volume down and power buttons together. The device will quickly take a snapshot of the screen and you will find it in your notifications.
Q4) What is Barrel Roll?
A As part of Google’s regular antics, it had introduced a “barrel roll” trick for desktop browsers. Type “do a barrel roll” as a search term, and Google would demonstrate the power of modern browsers by flipping everything around on your screen. Your Android device can also do a barrel roll if you speak out the same command. Again, It’s great fun to show off.
Q5) How can i uninstall an app. without going to setting?
A Long-pressing on an app within the app drawer pops up a couple of menus along the top of the screen. App Info gives you the boring technical stuff about how much memory it’s taking up, or you can fling it off the other way to uninstall it.
Q6) How can i go directly to the quick settings menu?
A expand notification bar by sliding two fingers.
Q7) What is inverted rendering?
A Inverted rendering is a posh way of saying it makes the pages black and turns the text white, so it looks like you’re reading the internet from 1997. It also supposedly saves battery, plus is easier on the eyes if you’re reading in the dark. It’s under the browser’s settings tab, within the accessibility area – and there’s a contrast slider, too.
Q8) How can i reboot into safe mode?
A Safe mode, the savior of so many Windows PCs! If you are experiencing a problem with your Gnex and you want to determine whether it is being caused by a third-party app, long-press the power button, then long-press the Power off option. Choose OK to reboot in safe mode, which completely disables all third-party apps on your device. If the problem goes away when you’re in safe mode, you should reboot your device and start removing recently installed apps until the problem goes away.
Q9) What does reset app. preferences means?
A Android gives you loads of different options for each installed app, and on the whole this is a very good thing. Sometimes it can be a bad thing, though: you may find your phone playing up because a crucial app has been disabled, or you’ve changed the notifications for something important like emails. In the apps drawer, you’ll find Reset app preferences under the settings. This resets all your apps on a global level, returning actions and data settings to their original levels.
Q10) What is imojis?
A “Emojis” are the Japanese version of emoticons. You can enable emoji support for the default Jelly Bean keyboard by choosing Language & input in the settings app, then going to the settings for the stock Android keyboard. Here, choose Add-on dictionaries and select Emoji for English words. When you next type certain words (there’s a complete list here) you’ll see its symbol appear in the predictions bar.
Q11) What is the difference between takju and yakju?
A These android builds are almost the same but there are some differences in terms of their android updates. Takju: Mobiles which brought from Google play store in USA and come with a Google wallet pre-installed. In these devices, android update is pushed by Google itself and they are almost first to receive an OTA update. Yakju: Mobiles which brought from Google store but outside of USA, update are also pushed by Google, but this update might delay by some days or weeks. So, do check your android build if your device is running android build other than takju, then change it in takju build to an OTA update first.
Q12) How do i know what is my Gnex android build?
A Download Android System Info application from play store or you can check it from Maps>setting>about.
Q13) I can not see Developer Options in settings?
A Google hide this option on JB 4.2.2, to enable it just go to settings—->about phone, tap 7 times on “build number” and it will be shown in settings.
Q14) I received 4.2.2 OTA update, ADB can not recognize my Gnex. What should I do?
A Download and install Android SDK, if you already have it on your PC just update tools and platform-tools. you must have latest ADB version (1.0.31). If you do not want to install Android SDK, download attached file (thx to xaueious).
Q15) How can i make my Gnex feel snappier?
A By speeding up (or disabling) the animated fade-in effects you see when switching between tasks, you’ll see a boost in performance and faster screen transitions. Start by unhiding “Developer options” as described above. Once in “Developer options,” scroll down to the “Window animation scale” and “Transition animation scale” options and set both to .5x. You can even turn each of these off and transitioning between apps and pages will be almost instant. If you ever want to go back, remember the defaults for both of these settings are 1x.
Q16) How can i improve my gaming graphics?
A If you are a hard-core gamer, you probably already know what 4x anti-aliasing is. First, enable Developer Options as described above, then go to Settings and click on Developer Options and enable Force 4x MSAA. Multisample anti-aliasing (MSAA) is a technique used to improve image quality. Since the Gnex has a GPU capable of supporting MSAA, this setting should make your graphics look more detailed when you are playing advanced games. Keep in mind this will also cause your GPU to work harder and your device may get hotter and consume more power than normal. It’s also possible that all games may not support this.
Q17) I want to see Jelly Bean on my screen, can i?
A Yes you can, go to settings—->about phone tap quickly 4-5 times on android version, you will see a big Jelly bean, touch and hold it, you will see small flying Jelly beans.
Q18) How can i customize my LED notifications?
A A free app called Light Flow Lite allows you to take control of the colors of your notification LED. It also makes your Gnex flash one color after another. This app allows you to set the notification color for over 250 applications and system events including missed calls, low battery, no signal, voice mail, calendar reminders, Gmail messages, email messages, SMS messages, MMS messages, Twitter notifications and more.
Q19) How can i put my Gnex in fastboot/recovery mode?
A Turn off your phone, press and hold down Volume Up and Down keys + Power button at the same time until fastboot (bootloader) mode (image of an Android with Start) appears then release the keys. Press volume up or down and select recovery by pressing power button. (For stock recovery, when you see an android logo with exclamation mark, press power + volume up to see the recovery menu).
Q20) How can i put my Gnex in download mode (odin mode)?
A Turn off your phone, press and hold down Volume down + Power button at the same time until odin mode appears then release the keys.
Q21) Why google voice search is crashing when i press on mic when i am on a custom rom?
A Update google search from play store.
Q22) My Gnex screen is turning on by itself, what is happening?
A It is caused by an application, usually by live wallpapers, try to find it and delete it, or install an antivirus app., i recommend Dr.Web Anti-virus, scan, delete, wipe cache and dalvik (optional).
Q23) sometimes i lose packet data (3G) when i turn it off then on, i turn off then turn on my Gnex to enable packet data again?
A There is no need to turn your phone off and on to re-enable packet data, just long press on power button, enable airplane mode for 3-5 seconds then disable it.
Q24) I rooted my Gnex, what to do next?
A It is recommended to make a nandroid backup immediately.
Q25) I rooted my Gnex 4.2.2, made a nandroid backup, but i can not find my backup folder?
A Use a file manager, enable root option, your backup folder is located in data/media/clockworkmod or mnt/shell/emulated/clockwordmod.
Q26) The kernel does not support PGM, is there a solution?
A change the kernel, or install intellicover application.
Q27) Do i need to wipe cache partition when flashing a new rom?
A No, there is no need to wipe cache, because when you wipe data/factory reset, cache is wiped automatically. Some said to wipe cache and dalvik after flashing a new rom to prevent any potential conflict.
Q28) I rooted my Gnex 4.2.2, flash custom recovery, but when i reboot into recovery, it shows the stock recovery!?
A Every OTA update places two files on device system (that are not there on a non-update stock ROM) that re-flash the stock recovery on EVERY boot. The two files are /system/recovery-from-boot.p and /system/etc/install-recovery.sh. You need to make sure that these files are either deleted or renamed, or else custom recovery will disappear when you reboot. These files serve no purpose other than re-flashing the stock recovery on every boot. So, by using something like Root Explorer, delete or rename them, and re-flash your custom recovery.
Q29) My Gnex won’t start, i can not get into fastboot mode, only i can get into download mode?
A Use odin to flash stock firmware here.
Q30) What is the easiest way to install samsung driver?
A The easiest way is to install Samsung Kies.
Q31) How can i flash stock image on my Gnex?
A See efrant thread.
Q32) What about governors, I/O schedulers…..?
A See droidphile thread.
Q33) How to properly post a kernel bug (LAST_KMSG)?
A See ciprianruse88 thread.
Q34) What is the best kernel for my Gnex?
A There is no something called “best kernel”. You must try many kernels and decide what suit your rom and your need. But for me AK kernel is the most active kernel in update releases that suit most roms.
VIA XDA Developers