For questions about the internal procedures and processes of the Android system.

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48
votes
6answers
84k views

How can I uninstall applications that are locked by phone vendor?

I'm using a Samsung I9000 and I have some annoying apps that came pre installed by the phone vendor, like a music store, a custom web browser and other memory leaking apps. Those crappy apps can't be ...
30
votes
3answers
20k views

Is Android a 32-bit or 64-bit OS?

The title is pretty much self-explanatory: is Android a 32- or 64- bit OS? I assume that it is one or another and not both, as that would force both 32- and 64-bit binaries to be hosted on Google ...
13
votes
2answers
16k views

How can I deal with unwanted system applications without rooting?

There are a lot of system apps in my mobile that I do not use, and have no intention of ever using. I know that is is possible to uninstall system apps and bloatware with root, but is it possible ...
13
votes
3answers
10k views

What's the meaning of signal strength colors in battery usage screens?

The battery usage screen has an indicator for "Signal strength" that, instead of being blue/black like WiFi, has many colors: green, gray, yellow. What's their meaning?
9
votes
1answer
2k views

How is the default PATH set?

On another linux system I might expect to find a .profile file, or something in /etc used by default. I'm unable to determine what sets the system path for processes not running in a shell.
9
votes
1answer
589 views

Hiding System icons in Notification area?

Does anybody know a reliable way to remove system icons from the notification area? I have a smaller screen on my (rooted, default ROM) Optimus T and I find some of the system notifications icons ...
9
votes
4answers
3k views

Disable USB charging

For some reasons not related to the battery life, I need to disable the battery charging when a USB host is connected to my phone (a rooted Nexus 4). Taking a look around on the internet (link1, ...
8
votes
3answers
14k views

Is possible to make symbolic links in the android filesystem? (and how?)

Is possible to make symbolic links in the android filesystem? (and how?) Thanks in advance :) . (My Android version is 2.1 , i'm using Motorola Defy)
8
votes
3answers
15k views

What are the differences between a system app and user app?

As I've played around with different ROMs and used Titanium Backup, I see that apps are categorized into system and user apps. Several ROM developers state that Titanium Backup should only be used ...
8
votes
3answers
62k views

What is SNS App?

I'm using a Samsung Galaxy I551 with Android 2.2 FroYo. Sorry for my ignorance, but I have not idea what is that app (which came installed and without rooting can't be removed). And it is using 15MB ...
6
votes
1answer
2k views

Is it possible to write to a device's clipboard using ADB?

I am interested in learning how to write to (and if possible, read from) a rooted Android device's clipboard. I hope to do so using ADB over USB and I am not interested in installing any apps to help ...
6
votes
3answers
1k views

Choosing apps to load and remove from memory when using Android

I'm not a programmer. And as far as I know, Android uses as much RAM as possible, loading as many apps as possible, so that launching / opening (or returning to them) is smoother. My question is: Is ...
6
votes
1answer
15k views

Which system files are safe to delete?

I got only 160MB internal storage out of which 100MB is reserved by android operating system. Which System files and folders are safe to delete? For example: de, fr, es and it files in ...
5
votes
1answer
875 views

How can I monitor and visualize the current resource usage (CPU, Memory, etc.) caused by the running Apps?

I am looking for typical per app/process resource usage information (CPU, Memory, etc.). This information is often useful to find and identify misbehaving apps. How can I monitor and visualize the ...
5
votes
1answer
4k views

Can I convert a system app to a user app, uninstall it, or move it to my SD card?

Is it possible to convert a system app to a user app and then uninstall it or move it to SD? I'm thinking about not critical apps, such as Astro filemanager (I use Root Explorer), Google maps, Google ...
5
votes
2answers
298 views

What system app stores the cellular network settings?

Before installing a new ROM, I backed up all data from my system apps using Titanium. I installed the new ROM, and also put in a new SIM card from a different network (so it was in on first boot-up ...
5
votes
2answers
9k views

How do I install an apk as a system application?

I'm trying to install an application in the system/app folder of a device. It needs to be done since I'm writing a QAT program and the tests need to run with a few privileges not available to third ...
5
votes
0answers
1k views

How to prevent shutdown when low battery? [closed]

When I'm using my hacky backlight modulation program which toggles screen off and on fast enough to simulate ultra-dim brightness Android sometimes gets wrong info about battery charge (it sees 0% 0V ...
4
votes
3answers
13k views

What is the effect of changing the maximum application VM heap size?

The settings menu in CM6 lets you change the maximum per-process heap size (internally, that’s the dalvik.vm.heapsize property). What are the practical effects of raising or lowering that setting? On ...
4
votes
3answers
1k views

Does the Android OS provide any overheating protection?

Apple iOS devices display the following warning and suspend operation should they overheat: Temperature [iDevice] needs to cool down before you can use it. Does the Android OS contain ...
4
votes
1answer
3k views

Is there an internal memory test for Android devices?

I need to fix a friend's phone this evening that has suddenly produced loads of android.process.media and com.google.process.gapps errors. I am going to reinstall the OS as it's an older ROM but it ...
3
votes
4answers
3k views

Free system information for Android such as Everest for Windows

There is any apk that shows the system and hardware information about my Adroid phone??? I mean an aplication such as Everest (or msinfo32) does for Windows.
3
votes
1answer
17k views

How to mount system in rw mode if no custom recovery

When I changed my build.prop for spoofing another device model, I copied build.prop from another device having gingerbrad but my system is froyo. When I rebooted, I lost my internet connection. It ...
3
votes
1answer
88 views

Where does shared prefrences data are stored in Android device?

I want to know where Android stores the data of SharedPreferences in actual Android devices? In PC I found this data under /data/data/pkg_name/shared_prefs/pkg_name.xml
3
votes
2answers
480 views

Toshiba Thrive, changing system font

I am currently running the Favum 1.1 ROM on my toshiba thrive, and I tried to use Font Installer to install a new system font. For some reason the font will install, but the actual font on my thrive ...
3
votes
1answer
1k views

Is it possible to disable the system update notification?

I have a Nexus One that I want to keep at v2.2 for testing purpose. But the update 2.3.4 has been pushed to my phone and I keep seeing the notification to install it. Is it possible to disable the ...
3
votes
1answer
97 views

Phone starts playing podcast for no apparent reason

This started yesterday, and I have no idea why. I noticed my phone was playing a podcast. I've been using BeyondPod for a while, which is sometimes a bit wonky, but never had this kind of problem. I ...
3
votes
1answer
3k views

Media Storage: what is it, and why is it using all my data?

I am only 5 days into my Billing cycle, and noticed that already like 1/3rd of my data has been used (thanks to My Data Manager)... So I looked to see what has used all this data, and it says it is ...
2
votes
2answers
666 views

How to switch on/off system load and running processes overlay

Somehow I have managed to get my Android phone (HTC Wildfire running Cyanogenmod 7.1 / Android 2.3.7) into a state where the system load (in unix uptime format) and running process list is constantly ...
2
votes
1answer
165 views

What Android parts do these terms describe?

Android users frequently use a lot of words with unclear meanings. In particular, they use these words a lot: Framework / framework-res.apk: What purpose does this structure serve? Flashing: What ...
2
votes
1answer
89 views

Details on Android OS massive data usage

Yesterday Android OS on my Nexus 5 transferred 44,7 GB (!) data over both WiFi (42,2 GB) and mobile data (2,5 GB). I have no idea why the data transfer started, and I have no idea why it stopped after ...
2
votes
2answers
15k views

How to manually disable or hide the system bar (menu bar) at the bottom of the screen?

I am using an ASUS Transformer TF300 with Android 4.1.1, and there is an app that shows the playing cards at the bottom of the screen, and show the "Continue" button when the card game is finished. ...
2
votes
1answer
2k views

How can I monitor my phone's activities?

A couple of times I've found my phone turned off when I don't remember doing so, especially when I have a fully charged or nearly full battery. Are there any applications out there that will monitor ...
2
votes
1answer
1k views

What's the difference between Camera.apk and com.sec.android.app.camera.apk?

I'm trying to install a modified version of the Camera app on my rooted Samsung Galaxy S (Captivate) through copying to /system/app and through installing a zip file via ClockWorkRecovery. It doesn't ...
2
votes
2answers
136 views

Is It Possible To Backup Settings And All Customized Stuff I Made On Android Cellphone?

Which backup is that? Full backup that backs up whole system? Or is it only backup that backs up settings and customized stuff?
2
votes
1answer
3k views

How can I install additional audio/video codecs on Android?

Does android separate the module between video player and video codec? If so, how do we install more codec to the system?
2
votes
1answer
3k views

How to give root access to apps that don't request it?

I've been using the app SystemPanel for some time now to archive my Android apps. It works great, but it cannot archive apps that have been installed under /data/app-private, because this directory ...
2
votes
0answers
269 views

Music playback stops randomly

I have bought the Xperia ZQ (Xperia ZL's alias in Brazil) C6503. I am experiencing a very annoying problem: from time to time the audio playback in any audio app just stops. If I hit play again it ...
2
votes
0answers
511 views

How To Disable htcCheckinService?

This process causes CPU spikes and sometimes incredibly slows down whole system. I need to know how to disable it. Tried with Quick System Info PRO but it won't allow me to end process or close it. ...
1
vote
1answer
2k views

Install adb enabled setting from zip

Is it possible to make a zip file, similar to the one that installs GApps, that stores ADB debug mode as a system setting? Maybe somehow modify a system bootup script to change the ADB debug mode ...
1
vote
1answer
3k views

Running TRIM from shell

Is it possible to run fstrim in stock android 4.3 from adb shell? I understand it runs every 24 hours when the device is plugged in and idle but I would like to run on demand to test a few theories.
1
vote
2answers
381 views

Some /system/app disappear on app drawer! How to start an app not in drawer?

Android 4.1.2 Somehow the original Home launcher icon disappeared after OTA update, I'm not sure if it's the only app that disappears, but it's the most obvious when I'm testing other launchers. ...
1
vote
1answer
664 views

Reinstalling Android after mobile has been erased by DBAN?

I was curious if a Android mobile is erased using DBAN, then can the Android be reinstalled on the mobile or it becomes useless ?
1
vote
1answer
948 views

rmt_storage keeps polling and spam logcat

In logcat I can see rmt_storage keeps doing something every 2/3 seconds I/rmt_storage(15279): rmt_storage open success I/rmt_storage(15279): rmt_storage shared memory ioctl success ...
1
vote
0answers
76 views

Is it possible to disable confirmation dialogs in Android 4.4?

I have an LG G2 which came with Jelly Bean, and I have recently updated it to Kit Kat. I have noticed that the amount of confirmation dialogs when changing phone settings seems to have gone up from ...
1
vote
0answers
102 views

Possible Soft-Brick Fix for my Galaxy S4

So, prior to my stupidity, I made a system.img dump via dd However, after my stupidity (tried flashing some lib files....), I am now stuck with only stock recovery mode, or download mode. How can I ...
1
vote
1answer
74 views

Duration of System Update - Nexus 4 (after download) - 4.4.2 to 4.4.3?

How long is it supposed to take to install the system update, I think from 4.4.2 to 4.4.3, on a Nexus 4? I downloaded the 70 MB and after the phone restarted, it attempted to install the system ...
1
vote
2answers
342 views

Restore deleted system

I have formatted the system using twrp now I can't flash the stock rom on my galaxy s3 sprint. I am getting the file_getprop: failed to stat "system/build.prop" status 7 every time I try to flash the ...
1
vote
0answers
84 views

What is the system APK that handles the calls in ICS?

I'm trying to figure out what system apk handles the calls in Android ICS? I've found that Messaging is the one for SMS, but what is for phone calls? The reason I'm asking is because I'm adding them ...
1
vote
1answer
276 views

Why does the system not recognize my fonts?

My phone is a rooted Nexus S running the custom ROM Replicant. I copied twelve font files comprising three fonts (Arimo, Cousine, and Tinos) from my computer to the SD card, used a root file manager ...