Logging is the process by which the system records what's going on - i.e. events, errors, warnings, and related information. Most apps provide details in log files, so the system logs help to debug problems.

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How can I view and examine the Android log?

There is a lot of interesting stuff in the Android system log, that is helpful in many ways find root causes of problems identify misbehaving apps How can I view and examine the Android log?
13
votes
7answers
829 views

How can I monitor and log data connection mode and rate, and log with location?

I would like to understand what connection type and theoretical data rate my phone is using for its data connection, and how it changes with different locations. I'm not looking for an actual data ...
10
votes
5answers
6k views

How can I record touches?

Is there an existing app I can install that will record my touch interactions in the background? I just saw this and it made me want to play around with my touch data to see what it looked like. ...
8
votes
7answers
6k views

Does access to logcat need root?

My device is already rooted, this is why I'm asking. Do you need root to monitor the logcat stream on the phone? If I ran the logcat command from within a Terminal on the phone, would that work?
8
votes
1answer
256 views

LogCat shows exception in SyncProcessorQueue every 5 seconds

I just started noticing this in my Logcat, it seems like every 5 seconds I get this exception caught. Does anyone have any idea what app or part of the OS it could be? I can't imagine whatever this is ...
7
votes
3answers
281 views

Is it possible to track what information on your phone an app is uploading?

If you are concerned about what information an app is sending about you (your privacy concerns) is there any way of tracking this? Can you see if an app is sending photos on your phone? Can you see if ...
7
votes
2answers
10k views

Problems accessing message logs on Jelly Bean with aLogcat

Summary I have been having problems accessing the K9 log messages using aLogcat, see below for more details. What I would like to know is: Why are no log messages from K9 appearing in the aLogcat ...
7
votes
1answer
4k views

Dropbox not installed, but there is log activity in /data/system/dropbox?

I don't have dropbox installed, but whilst checking log files I've found that there is a /data/system/dropbox directory with log files from the 18th (which I think is the last time I rebooted my ...
7
votes
3answers
56k views

Where are log files located on Android? [duplicate]

Possible Duplicate: How can I view and examine the Android log? My android (2.1) phone (a HTC Wildfire, if that matters) sometimes reboots without an apparent reason. Not extremely ...
7
votes
1answer
234 views

Is there a way to save pop up alerts?

After every call/message, my service provider (airtel) displays a popup which has the last call cost and current balance. Is there a way I could log them automatically and have the latest balance ...
6
votes
2answers
6k views

Does android keep a log of when it starts?

I'm making a parental control/accountability app for android. It consists of a monitoring service that runs in the background and starts when the phone is booted. Unfortunately, I have found that ...
6
votes
2answers
2k views

What is the format of Android's logs?

I'm trying to gather data about my phone by analyzing the log files in /dev/log. I'm specifically looking at /dev/log/main. I always thought that any sane log format would be plain text, yet these ...
6
votes
1answer
168 views

How can I log the start and stop connection with known WI-FI networks

At the end of a week , I would like to see a log for each connection with a (known) WI-FI network I made with my Galaxy phone. I automatically connect to different networks. It would be nice to see ...
5
votes
2answers
5k views

Analyzing packets in android

I want to analyze packets on my rooted Android mobile phone. What I did so far: I have installed shark for root and shark reader. I tried to sniff packets, but shark reader only shows RAW packet. ...
5
votes
3answers
13k views

What are these dumpstate logs?

So, these files were filling up my /data/logs directory, causing me to run out of storage space rapidly. What are they, why are there so many and how can I stop them clogging my storage? Screenshot ...
5
votes
1answer
356 views

Which app sent the unauthorized texts?

Today I got an automated text from my wireless provider saying I'd gone over my text limit. This is odd because I send maybe 50 texts a month. When I logged into their customer site I found over 3000 ...
4
votes
2answers
11k views

How can I access android log files on my Nexus 7 without root access?

Since aLogcat now no longer works with Jelly Bean, how can I access the system log files on my device without either root access or attaching it to a computer? I have tried using adb logcat from my ...
4
votes
1answer
347 views

Is there a way to get detailed information on why an OTA update fails?

I'm trying to figure out why my OTA update is failing. I have unrooted my Droid Bionic, and did a factory reset. It starts to update, then reaches about a quarter of the way and stops. It just ...
4
votes
1answer
65 views

Does android save a log of its own IP addresses?

I have a Wifi network to which I connect at work. The IP address has always been DHCP, but today the DHCP server is down. If I can figure out what IP address I had, I can set it statically (after ...
4
votes
2answers
39k views

Samsung Galaxy S3 black screen and automatic reboots

I have a Samsung Galaxy S3, purchased on July 2012. Sometimes, when I press the power button, the screen keeps black. The button LEDs turn on, but nothing else happens, and I have to remove the ...
4
votes
2answers
928 views

Something causes my phone to hang and reboot

This problem always happens after I restore my apps from Titanium Backup and move them to the SD card, regardless which ROM. However, I noticed that this problem has something to do with the SD card. ...
3
votes
3answers
14k views

Can I delete the log files on my device?

I'm currently developing on an Android 2.3.4 device. I've got root access to the file system, and I'm looking for the location of the system log files (like /var/log) so that I can delete them, but ...
3
votes
1answer
516 views

Dev/Log's - login attempts and how to read the log?

My first post on here and hopefully a easy fun answer. I'm looking for the location for failed login attempts on the device - I've looked on the device and it seems the logs are located in ...
3
votes
1answer
337 views

How to log and visualize resource usage stats (to identify resource hogs)?

I want to be able to collect up to, say, a couple of day's worth of resource usage statics for my android, at the resolution of individual apps, and ordered according to their shares of the resource. ...
3
votes
1answer
157 views

Is there a program which will log each program I start on my Android device?

I am looking for a program that will count each start of a program on my Android device. Over time, you install quit a lot of programs. It would be nice to see how many times you actually start ...
3
votes
3answers
493 views

Can the on-board ADB Server find the device itself?

I know that Android devices have an on-board adb server. I am able to start the server through the terminal emulator and run adb commands, but the device itself does not show up in the device list. ...
3
votes
1answer
909 views

My Device Keeps Rebooting (LogCat attached)

For some reason, after I changed my device's battery. It just keeps rebooting and here's a LogCat of the error: E/JavaBinder( 1305): *** Uncaught remote exception! (Exceptions are not yet supported ...
3
votes
1answer
1k views

Debug Samsung Galaxy S3 Blank Screen Freezes

my Samsung Galaxy S3 suffers from the Black/Blank screen freeze. The only remedy is to pull the battery to get the phone to respond again. I'm running Android 4.1.1 and I have done a factory reset. ...
2
votes
2answers
2k views

How do I increase the log size of dev/log/main?

How do I increase the size of dev/log/main by a factor of 10? My understanding is the log has a fixed size (16K?) and rolls over when that limit is reached. I'd like to find out what the log size is ...
2
votes
1answer
509 views

How active should I expect my Jelly Bean system log file to be?

When using aLogcat to view my Android log files, I find very few messages showing up in any of the views. Selecting Verbose level and no filter, I see that Main contains mostly garbage collection ...
2
votes
2answers
3k views

Enabling logcat in a ROM that has it disabled

I'm running Liquid Smooth 3.2 on my Motorola Droid 1. This ROM comes with logcat disabled (/dev/log/main doesn't exist). I tried starting the logcat service myself by adding the following to ...
2
votes
2answers
474 views

Android Log Output KINETO

On my T mobile G2 there is always a lot of action in my Log output that has the tag KINETO these are the two most common things it puts in there: ERROR/KINETO(9304): KLOG0C3- xmk_QueryOSQueue SDL ...
2
votes
1answer
687 views

Does logcat dump debug logs while it isn't expressly running?

my android device reboots itself automatically sometimes,so i need to get a way to debug whats causing that. i know about logcat,but what about the debug msgs when logcat isnt running,does logcat ...
2
votes
1answer
126 views

What does the error message “Light old sensor_state 0, new sensor_state : 128 en : 1” in logcat mean?

I have my Galaxy S4 connected with my PC and ran the "Building My First App" tutorial from http://developer.android.com/ . There were no problems, but I noticed many messages about the LightSensor in ...
2
votes
1answer
2k views

How can I get a LogCat? [duplicate]

Possible Duplicate: How can I view and examine the Android log? Sometimes I get asked for a LogCat. What is this? What is it supposed to do? How can I get it?
2
votes
2answers
3k views

Is there a good way to find out why an Android phone hangs?

Are there any log files you can look into, or any good ways of finding out if an app is causing the phone to hang (if even possible)? My friend has an Xperia Arc and after a while with a custom ROM ...
2
votes
1answer
1k views

How can I determine what is causing my Nexus 4 to freeze?

I have a new-ish Nexus 4 with Cataclysm ROM installed (rooted, 4.3). The device has recently started freezing - being unresponsive to button presses, but with the white LED pulsing. I have to ...
2
votes
2answers
1k views

Bug Report and Power-Bug Report Functions not working on Nexus 7 Android 4.3

I need to gather log info for QA testing. The settings menu "Bug Report" and the power menu "Bug Report" functions don't work for me on my Nexus 7 running Jellybean 4.3 (don't know if it ever worked ...
2
votes
1answer
3k views

Google Play Store Doesn't Open

So, in the end of the past year I have finally got to root my china replica (fake) Galaxy SIII Everything was working just fine, until I remove some app from the /system/app directory, because this ...
2
votes
1answer
1k views

How to troubleshoot a lockup/freeze

I have a GNex running on CN(A) 3.8. It has started to lockup/freeze when the screen is off. So far it occurs mostly overnight while it's charging. I have to pull the battery to resolve. I believe it ...
2
votes
1answer
171 views

Is there a way to read a network log file directly from the Android device using a Linux tail command like?

Is there a way to do what's asked in the topic subject for unrooted and/or rooted phones? I'd like to read from a system log file instead of constantly listening the network activity for battery ...
2
votes
0answers
3k views

Debugging Galaxy S2 Bluetooth problem: Bluetooth disconnects, Bluetooth status never fully turns on, Only reboot resolves this

I know many have problems with Bluetooth and certain car kits. I specifically have a VW. In any case, my Galaxy disconnects from not only my car, but also from my Philips in home audio system. In both ...
2
votes
0answers
42 views

Getting the activities of the user

Is it possible to get a list of user activities? I want to know when the phone was opened, when it was locked, etc. Just the basic things.
2
votes
1answer
726 views

Android early boot console over usb

I'm trying to port newer kernel versions onto my Nexus S device. Most newer kernels panic very early on in the boot process. I would like to debug this. However, since the phone has been provided to ...
2
votes
1answer
410 views

How can I monitor and log the connections to my phone's wireless hotspot?

I'm sure the phone will be logging all connections and connection attempts when it is used to set up a wireless hotspot - my question is how can I view these logs? If the default setting is not to ...
2
votes
0answers
377 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
2answers
3k views

How to find the app that causes crashes?

Where should I begin the hunt for the cause of crashes / reboots when logging apps do not work anymore?
2
votes
0answers
1k views

Trace/log of all activity on my android device [duplicate]

Is it possible to put on trace or get log of all activity on android device. If so, How?Also are there any key logger application
2
votes
1answer
417 views

What would cause the existence of a /sdcard/logfile.log?

Since quite some time I've been getting a file /sdcard/logfile.log which gets really big quickly, last time I checked it was about 2MB. That file seems a general system log since I remember seeing ...
2
votes
0answers
158 views

Are there any log files you can examine do determine why an unrooted Android device is rebooting repeatedly? [duplicate]

Possible Duplicate: Where are log files located on Android? Yesterday evening I left wi-fi enabled overnight. This morning I found my Archos 101 rebooting over and over again (eating up the ...