1. How to use
“Wakelock Detector”
beta manual
uzumApps 2013

2. Introduction
In this presentation, We present and explain
how to use Wakelock detector by screenshots.
Also at the end of slides we show use-cases of
finding and solving wakelock issues.
Note: If you don’t know what is “Wakelock” and
the purpose of “Wakelock detector” please
check out these slides: http://www.slideshare.
net/ahikmat1/android-wakelock-detector

3. This is what you see at first launch
ActionBar (left to right)
● Wakelock types [Screen,CPU..]
● Sorting method [Usage,Active..]
● More options [Settings, Refresh.]
Sleep-state statistics (*clickable)
● e.g: During 16 hour 43 minutes my phone was
awake 13% (which is pretty bad)
*more details in next slide
Wakelock usage by app (*clickable)
● Left side - App info
○ e.g:Google search
○ RED means currently running
● Right side - How long and how many times
wakelocks were totally used
○ e.g: used for 1 minute 3 secs 315 times
○ blue progressbar shows the usage ratio
compared to awake state

4. When you click on “Sleep-state”
statistics
Visual
transformation
Deep sleep :
13 hours 38 min
Screen
on:
59m
in
30sec
Awake: 13%
2 hours
4mins
Total awake time:
3 hours 4 mins
Total 16 hours 42 mins

5. When we expand the app!
The app’s used wakelock info
● Left - Wakelock tag(description)
○ Long-press on it for more action
● Right - Usage time and count
○ blue progressbar shows the usage ratio
compared to awake state
● App info - redirects to Android app info page
○ You might Stop or Uninstall the app
● Open - launches the app
○ You might change some settings of
the app (sync, update or etc..)
● Playstore - redirects to the app on
GooglePlay
○ You might contact developer to inform
wakelock issues
Status info : Running in
background or not
Type info: Third-party app
or System app

6. What we got in ActionBar
Screen wakelock - Lists apps
which controlled your screen
state (e.g: AlarmClocks,
Games, VideoPlayers etc..)
CPU wakelock - Lists apps
which kept your phone awake
(e.g: Messengers, Widgets,
Music players etc..)
Wakeup triggers - Lists apps
which registered to
AlarmManager to do periodic
tasks
Sorting by Running state shows
the currently active apps on the
top
Sorting by Usage (default) sorts
the apps by their wakelock
usage
ABCD.. sorts by alphabetic
order
Refresh - important feature to
recognize wakelocks which is
being currently used
Settings - Settings, FAQ and
more features
Share - share this app with
friends and
Keep the world GREEN!!!!

7. Settings window
Advanced mode is not for only Geeks!
● It is recommended to turn ON this mode
● shows “Kernel wakelocks” also frequently mentioned
Android system wakelocks (e.g: *backup*,
AlarmManager, AudioOut, AudioIn etc..)
Suppose you did not fully charge for days. In this
case wakelock stats gathered for several days. This
makes it difficult to find problematic wakelock..
That’s reason why we added “Since unplug” option !!
FAQ - We tried to explain “wakelock” as much as we
could!
Change theme - Go Green, Change to Dark Theme!
Upgrade - We are making this app FREE!!! Support us
by purchasing more features ;) We know those features
are not excellent yet, We are working on it !!!
Please email us if there is a bug or other problems!
Thank you!

8. Use case #1
Battery drain while phone is idle!
Similar cases:
● Phone drastic battery drain in short time
● Battery drain when not using phone
● Battery die without reason while phone is sleeping
● Phone is getting hot and draining battery by itself
● Battery statistics says the phone is awake for a long time
Solution:
❖ Turn on “Advanced mode” in WLD Settings
❖ Select “CPU wakelocks” and Sort by “Usage”
❖ Expand the suspicious app on the top
❖ Do some action
➢ Google for the top wakelock tag (e.g:
AlarmManager)
➢ Go to “App info” and “Force stop”
➢ Uninstall the app if you don’t need it
❖ If you still can not find then select “Kernel
wakelocks”, then try googling the suspicious kernel
wakelock

9. Use case #2:
Problem “AlarmManager” of Android OS
Similar cases:
● AlarmManager wakelock of Android OS is too big and it is
draining my battery
● Wakelock “AlarmManager” problem
Solution:
❖ Select “Wakeup triggers” (alarm-clock icon) on top
❖ These apps are the root cause of “AlarmManager”
wakelock
❖ Try to reduce wake-up amount by changing settings
of the apps.
➢ e.g: GO Weather EX widget has “Update rate”
settings which can be reduced.
➢ Facebook, KakaoTalk, Twitters are
unavoidable
❖ or “Force stop” as a temporary solution
❖ or Uninstall the app if you never use it

10. Use case #3:
Phone screen turns on by itself
Similar cases:
● Phone screen turns on by itself
● Phone screen flashes on randomly
● Phone screen keeps on by itself randomly
● Phone screen switches on constantly by itself
Solution:
❖ Select “Screen wakelocks” on top
❖ It shows you the apps which acquired screen
wakelock
❖ Pay attention to apps which marked as Active
❖ Let your phone sleep again
❖ Whenever the screen turns on, press “Refresh”
button to see if wakelock time changes in some of
apps.
❖ After you find the reason, you can act accordingly

11. Upcoming more use cases..