In many cases, people who have battery drain issues have a tendency to end up being found to be using a known battery draining app or configuration. To help these people, I'm going to try to start a list here. I will, in the case of known rogue apps, include the reporting date so people can try updates to see if drain is fixed. (For example, Facebook is rarely a culprit any more, but it was the #1 most common battery eater in 2010.) The primary focus here will be things that shouldn't drain your battery but do.
Firmware bugs:
The UCKK6 OTA update contains a number of issues with wifi and bluetooth. Among these is that an oddball feature of our Wifi/Bluetooth chipset goes nuts and wakes up the phone once per second intermittently. Rebooting temporarily fixes it, turning off wifi temporarily fixes it, only permanent fix is to ditch UCKK6. http://forum.xda-developers.com/showthread.php?t=1409513 for more details - Appears as a variant of the Android OS "bug" - this is the only one that is actually 100% a firmware bug. International XWKK5 is also affected.
LAN Environment (WiFi):
Broadcast LAN traffic can wake your wifi chip often. This also manifests as the Android OS "bug", but it's a small problem with the firmware base (XXKI3 and UCKK6 are known to be affected) and mostly a network problem. Examples I've seen so far include:
Windows Client Backup
UPnP (DLNA) SSDP
Dropbox Lan Sync Discovery Protocol
Buggy piece-of-**** routers that spam lots of ARP requests continuously - The 2Wire routers that are required for UVerse access apparently fit in this category.
You are more likely to have the above issue on some firmware bases than others. For example, XXKI3 disables all of the chip's packet filters, making it vulnerable to this sort of thing. UCKH7 and XWKL1 don't, leading to significantly improved life on "dirty" networks. UCKK6 almost surely also has the same problem.
Configuration issues:
Hotmail calendar sync
Misconfigured Microsoft Exchange servers - 1) is a special case of this. At least one person has reported that calendar sync to a non-Hotmail account was problematic for them, but email sync was OK
A bad Exchange configuration - the client apparently goes nuts if it can't contact the server
BLN - On Galaxy S II devices, there is no stable BLN implementation that does not hold a wakelock when a notification is active. This means that an active BLN notification will drain about 4-5%/hour. I say this in bold letters in my kernel thread, but somehow people still don't realize it...
Rogue apps:
Words with Friends (October 2011)
Skype (October 2011) - Particularly insidious, as it does not directly hold a wakelock. However, it causes lots of background network activity, and this activity keeps your phone awake. Since most of the time is spent wakelocked in the network stack, Skype drain shows as Android OS.
Any IM app that works similarly to Skype is likely to have the same issues.
AP Mobile Widget on stock AT&T ROMs - this one also blows through your data allotment quickly if you don't have unlimited data
AT&T Smart WiFi can sometimes hold excessive wakelocks - this is why AT&T bloat is bad for you.
The Obvious:
3D or animation/action-intensive games
The Rare:
Apps that occasionally go nuts, but not frequently
Facebook - I've had it wakelock me once, and also, Facebook chat may have triggered my first obvious "AOS bug" episode once - so far, it's been responsible for drain once this month
StartingAlertService - some sort of Calendar notification related bug
The False Blame:
GPS Status and Toolbox - may appear to be high-drain but is actually not draining - this is an Android battery reporting bug - see http://forum.xda-developers.com/showpost.php?p=23106668&postcount=491 for more details. Thank you for the info and the great app rhornig.
If you're having battery drain issues, I suggest the following:
Install BetterBatteryStats. The XDA edition from the author's thread on these forums is free. (Market version is paid.)
Also, having CPUSpy to see deep sleep percentages is VERY useful
BBS now shows kernel wakelocks - make sure to check these. If you have an older version that doesn't show kernel wakelocks, use the instructions below.
Get ADB up and running (Google it, and if you're on Windows, Googling Droid Explorer may help)
Using ADB, do the following:
Code:
adb shell cat /proc/wakelocks > wakelocks.txt
adb shell dmesg > dmesg.txt
Zip em' up and post em' here for analysis.
Edit: Specifically, to get a good baseline measurement of idle drain - make sure to have CPUSpy installed for this procedure:
Charge phone to full
Reboot
Reset timers in CPUSpy, otherwise the percentages and bars will be wacky
Let the phone sit for a while - Overnight is best. Then provide data:
Deep sleep percentage
Time the phone was sitting
Percentage battery drained
I don't need screenshots of the above, just the numbers. Screenshots use up massive amounts of thread space
Grab /proc/wakelocks as mentioned above and post it, OR use BetterBatteryStats 1.4 or above to pull kernel wakelocks.
Note: If you're at or below 1%/hour idle drain, not much point of posting your wakelocks.
If you have high wlan_wake, wlan_rx_wake, or svnet-dormancy wakelock times, then you have an app eating data or one of the wifi wakeup bugs described above. Install Shark for Root - https://market.android.com/details?id=lv.n3o.shark
Start it, and change parameters from:
Code:
-vv -s 0
to
Code:
-vv -s 68
This tells it to only capture the first 68 bytes of each packet, which is all we need for this purpose. This provides two benefits: A smaller capture, and privacy for you. (It captures packet headers but not contents)
Then start a capture and let it sit for a bit.
Note that your drain will be higher during the capture than normal - we're collecting data here, not directly nuking the drain.
After a while where you are positive you are encountering drain, stop Shark and then pull the .pcap file - load it in Wireshark on your PC or post it here. If you post it here, MAKE SURE you have a truncated capture as instructed above!
Thank you sir. Will do in a few.
Sent from my SAMSUNG-SGH-I777 using XDA App
Words with friends is an insane battery drainer. I had a screen on time of 4 hours and 15 minutes with 35% battery use and Words with friends had a 45 min cpu usage and was 26% of the battery drain...There is no way that should be so close to the screen usage. CRAZY.
chase10784 said:
Words with friends is an insane battery drainer. I had a screen on time of 4 hours and 15 minutes with 35% battery use and Words with friends had a 45 min cpu usage and was 26% of the battery drain...There is no way that should be so close to the screen usage. CRAZY.
Click to expand...
Click to collapse
I spent a while testing that app before finding out it is a phone-wide issue. Emailed the dev today but we'll see how it goes. Not a small dev anymore.
Yea I hope they fix it...I love playing it but it kills my battery. If that app didnt run I may have like 5 hours of screen time on a single charge if not more. I looked at many of the reviews of it and many of them mention the battery killing it does.
Just discovered an interesting feature built in to the stock rom. Go to task manager > storage and you'll see it©.
The tower defense game Sentinel 3 will put a HEAVY drain on your battery.
Sent from my SGH-I777 using xda premium
gtg465x said:
Just discovered an interesting feature built in to the stock rom. Go to task manager > storage and you'll see it©.
Click to expand...
Click to collapse
Huh? What happens?
Apparently an app I come to love and use on all my devices is Battery Monitor Widget. According to to someone's post from the BBS thread and due to my own investigation. BMW will cause a lot of wake time up to 970 awakes over a 12 HR period. That is a lot time consuming battery and resources.
rebooted my phone reset cpu spy and going to leave it not charging and I will abd into the phone and get the demesg and other file and post here.. been losing 30% over night on about 8 hours which I know is way off... no skype I have wifi data sync and gps on as well as syncing a google account twitter tango and facebook.... which I understand might be alot but shouldn't this phone be able to handle all that? I also live in a basement with poor service but right next to the router... getting a microcell on Friday which I hope helps. My AOS is around 65% in battery status and suspend and events/0 are definitely running more than one minute every 10 hours, more like 20 minutes at least every charge, and my phone is lasting 11 hours give or take with minimal to no use
penskyc said:
rebooted my phone reset cpu spy and going to leave it not charging and I will abd into the phone and get the demesg and other file and post here.. been losing 30% over night on about 8 hours which I know is way off... no skype I have wifi data sync and gps on as well as syncing a google account twitter tango and facebook.... which I understand might be alot but shouldn't this phone be able to handle all that? I also live in a basement with poor service but right next to the router... getting a microcell on Friday which I hope helps. My AOS is around 65% in battery status and suspend and events/0 are definitely running more than one minute every 10 hours, more like 20 minutes at least every charge, and my phone is lasting 11 hours give or take with minimal to no use
Click to expand...
Click to collapse
Suspend and events/0 at 1 minute every 10h aren't too bad. AOS at 65 is a bit high.
Unless one of the above apps you use is implemented badly, your phone should be able to handle the above. I have Google and Facebook and get great drain. I haven't heard reports of Twitter causing problems.
Tango is an unknown - it's in a similar class to Skype so could be driving excessive idle network traffic.
To the person who posted that a game drained their battery - well, that should be pretty obvious. I guess I'll add it to the first post later, but I'm primarily focusing on the "non-obvious" stuff - things that SHOULDN'T drain your battery but do.
Tango is all good had it installed on my phone forever my batt life is amazing. It doesnt require a sign in. Look out for anything that make you sign in besides google as far as im concerned
Sent from my SAMSUNG-SGH-I777 using xda premium
Entropy512 said:
In many cases, people who have battery drain issues have a tendency to end up being found to be using a known battery draining app or configuration. To help these people, I'm going to try to start a list here. I will, in the case of known rogue apps, include the reporting date so people can try updates to see if drain is fixed. (For example, Facebook is rarely a culprit any more, but it was the #1 most common battery eater in 2010.) The primary focus here will be things that shouldn't drain your battery but do.
Configuration issues:
Hotmail calendar sync
Misconfigured Microsoft Exchange servers - 1) is a special case of this. At least one person has reported that calendar sync to a non-Hotmail account was problematic for them, but email sync was OK
Rogue apps:
Words with Friends (October 2011)
Skype (October 2011) - Particularly insidious, as it does not directly hold a wakelock. However, it causes lots of background network activity, and this activity keeps your phone awake. Since most of the time is spent wakelocked in the network stack, Skype drain shows as Android OS.
Any IM app that works similarly to Skype is likely to have the same issues.
The Obvious:
3D or animation/action-intensive games
If you're having battery drain issues, I suggest the following:
Install BetterBatteryStats. The XDA edition from the author's thread on these forums is free. (Market version is paid.)
If BBS doesn't show any significant wakelocks, and no apps show as hogs in Settings->About Phone->Battery, do the following:
Get ADB up and running (Google it, and if you're on Windows, Googling Droid Explorer may help)
Using ADB, do the following:
Code:
adb shell cat /proc/wakelocks > wakelocks.txt
adb shell dmesg > dmesg.txt
Zip em' up and post em' here for analysis.
Click to expand...
Click to collapse
Can you please take a look at this one to see if there is anything out of order?
Much appreciated!
Entropy512 said:
Suspend and events/0 at 1 minute every 10h aren't too bad. AOS at 65 is a bit high.
Unless one of the above apps you use is implemented badly, your phone should be able to handle the above. I have Google and Facebook and get great drain. I haven't heard reports of Twitter causing problems.
Tango is an unknown - it's in a similar class to Skype so could be driving excessive idle network traffic.
To the person who posted that a game drained their battery - well, that should be pretty obvious. I guess I'll add it to the first post later, but I'm primarily focusing on the "non-obvious" stuff - things that SHOULDN'T drain your battery but do.
Click to expand...
Click to collapse
what I meant to say about the suspend and events/0 is that i wish i was getting a minute every 10h, it is more like 20minutes.. I just finished my over night test, I put the phone down at 11:09 with 69% battery left, waking up just now with 30% at 8:16, did not touch the phone once.. should have been asleep the whole time.. also my suspend is at 31minutes (BBS) and my events/0 is at 30minute (BBS), i also reset my cpu spy. deep sleep 5:49 hours, 200mhz 1:29 hours and 800mhz 1:21 hours (14%)
and lastly, here is my dmesg and wakelocks... so yea this looks pretty horrible to me!
I actually went to the at&t store to exchange this phone yesterday cause I am convinced something is wrong with it, no one really seems to be getting the severe drainahe and stats that i am getting, so I assumed it has to be the phone, well its 2 weeks old and the guy wouldnt take it cause he needed proof there is a battery problem.. Also I went back to stock yesterday before i was going to exchange my phone and the issue seemed to be happening aswell no matter where I was and what apps were installed, hoping these files will figure something out! thanks for your help!
There's alot of careless and sloppy developers out there that has no concern on users battery. Android support Push notification since froyo and it's only implemented in a few apps like tango. Why? Go to the appstore the same exact IM and video chat apps uses push notification, but not on the android version. Instead you have to log in all day clogging your Ram and battery. As of now the only IM client I use it's Google Talk screw Skype oovoo ect or any other apps that has no push. BTW Facebook it's another mess, soon Ill be deleting and using the browser.
Sent from my SAMSUNG-SGH-I777 using xda premium
penskyc said:
what I meant to say about the suspend and events/0 is that i wish i was getting a minute every 10h, it is more like 20minutes.. I just finished my over night test, I put the phone down at 11:09 with 69% battery left, waking up just now with 30% at 8:16, did not touch the phone once.. should have been asleep the whole time.. also my suspend is at 31minutes (BBS) and my events/0 is at 30minute (BBS), i also reset my cpu spy. deep sleep 5:49 hours, 200mhz 1:29 hours and 800mhz 1:21 hours (14%)
and lastly, here is my dmesg and wakelocks... so yea this looks pretty horrible to me!
Click to expand...
Click to collapse
It seems to be the same issue as everybody else is having, getting excessive network traffic waking up the phone. Either you do a network capture of the packets and identify it by the highest common port which comes in (complicated), or you turn off each service off one by one. In the last case I'd start with the network location service (Kill it with Titanium) as that was known to be a *****.
AndreiLux said:
It seems to be the same issue as everybody else is having, getting excessive network traffic waking up the phone. Either you do a network capture of the packets and identify it by the highest common port which comes in (complicated), or you turn off each service off one by one. In the last case I'd start with the network location service (Kill it with Titanium) as that was known to be a *****.
Click to expand...
Click to collapse
so you think I should freeze each app one by one and let chill for an hour and see if there is drainage or not? is ot just processes or apps? cause I would never know to do something about network service unless u said something.. BTW I did, and i still lost 4% battery in an hour of idle.. so thats not it.. what about using this the other way you were talking about
http://www.vbsteven.be/blog/android-debugging-inspectin-network-traffic-with-tcpdump/
penskyc said:
so you think I should freeze each app one by one and let chill for an hour and see if there is drainage or not? is ot just processes or apps? cause I would never know to do something about network service unless u said something.. BTW I did, and i still lost 4% battery in an hour of idle.. so thats not it.. what about using this the other way you were talking about
http://www.vbsteven.be/blog/android-debugging-inspectin-network-traffic-with-tcpdump/
Click to expand...
Click to collapse
Exactly. By services I just mean running apps I guess. You can do it as in that guide too, but its hard to later find out which App listens to which port on Android...
AndreiLux said:
Exactly. By services I just mean running apps I guess. You can do it as in that guide too, but its hard to later find out which App listens to which port on Android...
Click to expand...
Click to collapse
ok, so I did try this to an extent, i would disable 4 apps at a time for the most part, only apps, none of the red items like wifi manager and stuff like that (even though i did try that at a different date)
I had no success.. I went back to stock, uninstalled all bloatware, at&t live TV, my account, bar scanner, all that bs, right now I have BBS, Cpu Spy and titanium, only apps that are not stock and are in the list of installed apps. I am still getting this issue!! could it be that I have poor service (though this never affected the iphone this badly) I lose 40% overnight though and it seems odd to me that would be because of low service..
GO.Keyboard and GO Contacts ( especially GO Contacts) was draining my battery at a phenominal pace. GO Contacts was using more battery than the display
Sent from my SAMSUNG-SGH-I777 using XDA App
Having been facing horrible battery drainage for a week - the phone left unplugged to overnight was loosing about 70% of battery charge...
In the morning in menu>>settings>>about phone>>battery>>battery use>>battery chart
AWAKE was showing continues blue line throughout the past night... and the fact that I had recently installed the other fifteen apps made the situation even more complicated :-(
Long story short, as result of analyzing battery use chart, System Panel app history tab, as well as uninstalling/installing my programs one by one, the application what was preventing my Amaze from going into SLEEP mode and draining its battery appx 8% per hour - was identified.
It turned out to be the Amazon AppStore - by the way downloaded from the official web site.
So, do not allow this fabulous app to remain in background (unless you do keep your dear amaze consistently plugged in), and after the use always kill it. Now I am treating it as follow menu>>settings>>apps>>manage apps>>Appstore>>"Force stop" followed by "Clear data" ;-)
However! Even after such my treatment it keeps 'working', the relevant chart in System Panel reads that - six/eight times a day the CPU is being loaded by this particular application!
O.K.
There has been one more app found among my operational environment able to prevent entering the SLEEP mode. It is IM+ Pro. This messager can run in two ways - Background mode and Push mode. When left in the Background mode it won't let our device to enter SLEEP, cousing the similar battery drainage as Amazon AppStore does.
O.K.
Merci beaucoup! for reading my post . & I am happy to add, that now my phone battery consumption in the STAND BY is for sure below 1% per hour .. left unplugged till morning the device is loosing no more that 4%, in fact the signal reception quality line is never marked with green color on the overnight chart in 'Battery Use'.
P.S. Worthy to be also mentioned, during my checks and playing around with System Panel, there have been spotted the apps, what if left running in background (with eather status - 'active', 'cashed' or 'service-only') on one side allow the device going into the SLEEP but on the other keep repeatedly loading CPU around 0.5 - 2.0 % each, what in my opinion is already battery consuming.. The spotted apps are: eBay Official App, Text Free, Control Panel, Maps, Startup Manager & HeyWire.
P.P.S. Probably no need in synchronizing emails frequently during night time - such task is pretty much battery consuming too.
I'm using quicksense 2.1.2. Left it on last night at 79% then in the morning, 74%
Sent from my HTC Amaze 4G using xda premium
Thanks!
Thanks for reporting this, i would have never guessed it because the only task manager i have is the factory htc one. I was wondering why my battery would drain so much, i would unplug it at 100% and a few minutes later it would crawl down to 94%(with the anker battery). I uninstalled it and now lets see how different my battery is.
supraman89 said:
..uninstalled it and now lets see how different my battery is.
Click to expand...
Click to collapse
Wished to attach couple screenshots, tried Opera, Firefox, UC as well as default one - in vain.
So giving two links to the shots uploaded to Public folder at my Dropbox:
http://db.tt/5FkXuzG7
http://db.tt/qHYcD2sR
But I see the file extensions need to be added - as JPG..
Good post for giving people some great starting points to help solve some of these problems.
One thing to note: I have the Amazon App Store as well, but no battery problems. My device is rooted and, it's likely, that it's not entirely the app's fault that it's draining the battery, but rather something between the app and Sense not playing nicely.
I've had several apps that would either labor the processor or crash when sense was running that run fine now that rooted.
My battery life isn't bad, but it could be better.
The long period of time my screen is off (see pic) is when I went to sleep, it's also when I set my custom ref. In the other pic you can see how many time my phone woke up when it was supposed to be sleeping!
Attached is also my log, it's the paid version with everything ticked, so it should have all the info needed, except I can't make heads nor tails of it.
irish-sid said:
My battery life isn't bad, but it could be better.
The long period of time my screen is off (see pic) is when I went to sleep, it's also when I set my custom ref. In the other pic you can see how many time my phone woke up when it was supposed to be sleeping!
Attached is also my log, it's the paid version with everything ticked, so it should have all the info needed, except I can't make heads nor tails of it.
Click to expand...
Click to collapse
google is your friend. There are many threads on XDA about BBS and explaining things.
Thanks, but if you can tell by the time i made these logs you can see it was over 12 hours ago, I've spent a good portion of the day trying to figure this out.
I wasn't being a ****, i posted in the q&a section, so while i appreciate your reply, i could do with someone helping me understand this and in turn I'll learn something and maybe not have to ask again.
You went 15 hours and still have 60%, that's insanely good, mine dies in less time than that. Although it seems because you haven't used anything except having the screen on, I use heavier applications constantly.
You could use lowest screen brightness and if you're using stock firmware, disable data when you don't need it, since I figure some of the bloatware apps would want to connect to the internet.
eksasol said:
You went 15 hours and still have 60%, that's insanely good, mine dies in less time than that. Although it seems because you haven't used anything except having the screen on, I use heavier applications constantly.
You could use lowest screen brightness and if you're using stock firmware, disable data when you don't need it, since I figure some of the bloatware apps would want to connect to the internet.
Click to expand...
Click to collapse
Yeah, it was overnight though, usually get about 4-5 hours screen time during the day. I'm on check rom with most bloatware disabled and most if not all apps are set to manual sync.
I'm wondering what keeps waking my phone up overnight.
1) Nail the samsung push service com.sec.spp.push
2) Remove any battery monitoring widgets you are using, maybe you have a battery icon on your clock widget, try removing that or something.
Looks like you are using viber, whatsapp and vlingo, so thats 3 big background apps.
I would also be inclined to swap to something other than go launcher as well.
If in doubt ask in the BBS thread here
veyka said:
1) Nail the samsung push service com.sec.spp.push
2) Remove any battery monitoring widgets you are using, maybe you have a battery icon on your clock widget, try removing that or something.
Looks like you are using viber, whatsapp and vlingo, so thats 3 big background apps.
I would also be inclined to swap to something other than go launcher as well.
If in doubt ask in the BBS thread here
Click to expand...
Click to collapse
Thanks very much, I'll have a look at all of this then. Thanks veyka!
Thanks everyone else too.
Hi, I have a few questions regarding various wakelocks that I hope somebody will be able to advise on. Whether they are normal or not Im not sure.
I'm in the UK, my phone is a standard GS3, ie not routed or anything. I had battery life problems but have used Better Battery Stats and GSAM Battery Monitor and found the problem so now all is well and the battery is lasting exceptionally well indeed.
Whilst spending hours finding the original battery drain problem and removing the rogue apps, I came across these and just wondered; are they normal, is there anything I can do to improve them?
1) Android system - Seems to be causing quite a lot of wake locks, particularly running a lot are the Accelerometer, gyroscope & light. What exactly are they, and is it normal for them to be running a lot and cause wakelocks?
2) Facebook - I have turned sync frequency and notifications to 'Never' within the app, and set to not sync contacts, yet its still always in my list of running applications and causing wakelocks. Why? Is that normal, and what can I do to stop it? I only want it to turn on and refresh when I use it (very rarely) - which is what I have set it to. But it keeps running and starting itself even after I force stop it.
Thanks, John
Anybody able to advise? Particularly point 1) above.
John
John P said:
Hi, I have a few questions regarding various wakelocks that I hope somebody will be able to advise on. Whether they are normal or not Im not sure.
I'm in the UK, my phone is a standard GS3, ie not routed or anything. I had battery life problems but have used Better Battery Stats and GSAM Battery Monitor and found the problem so now all is well and the battery is lasting exceptionally well indeed.
Whilst spending hours finding the original battery drain problem and removing the rogue apps, I came across these and just wondered; are they normal, is there anything I can do to improve them?
1) Android system - Seems to be causing quite a lot of wake locks, particularly running a lot are the Accelerometer, gyroscope & light. What exactly are they, and is it normal for them to be running a lot and cause wakelocks?
2) Facebook - I have turned sync frequency and notifications to 'Never' within the app, and set to not sync contacts, yet its still always in my list of running applications and causing wakelocks. Why? Is that normal, and what can I do to stop it? I only want it to turn on and refresh when I use it (very rarely) - which is what I have set it to. But it keeps running and starting itself even after I force stop it.
Thanks, John
Click to expand...
Click to collapse
1) Can you post here the "Dump" file from BetterBatteryStats ? You can generate it with BBS > Options > Dump to file
2) Facebook is known to drain battery with background daemon and services. Try using another Facebook'apps even if it's not the genuine one.
Isnt' cross-posting generally not allowed?
Thanks lelinuxien52, yes I will do that.
Szadzik, what do you mean by cross-posting?
John
Ahh just googled it, yes sorry I didn't realise.
Hi there
I'm using Omega 27.1 + Phenomenal Extreme, and getting around 2.5% battery use per hour, and I wish to make it lower (I heard some people can get 1%/hour)..
I'm posting here some screenshots of my BBS, hoping someone could help me interpret them..
It's pretty odd that facebook and gmail kept my phone awake for so long..
I have facebook sync set to off, and refresh interval to "never"..
Anything else I could tweak? Maybe saving a longer log?
Thank you
brbbX said:
Hi there
I'm using Omega 27.1 + Phenomenal Extreme, and getting around 2.5% battery use per hour, and I wish to make it lower (I heard some people can get 1%/hour)..
I'm posting here some screenshots of my BBS, hoping someone could help me interpret them..
It's pretty odd that facebook and gmail kept my phone awake for so long..
I have facebook sync set to off, and refresh interval to "never"..
Anything else I could tweak? Maybe saving a longer log?
Thank you
Click to expand...
Click to collapse
Hello,
First, you have to put WIFI OFF when you don't use it. It drain you battery according to BBS screen : wlan_wake, wlan...
Secondary, you need view your Facebook events on the Internet browser because Facebook apps was know to drain battery (because it launch service and processus on your device).