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[Q] Galaxy Tab 2 7" running hot, ROM issue?

Hey XDA!
As a brand new Galaxy Tab user and first-time tablet owner I have a few questions about heat-development and battery-usage, but here is a bit info first:
Model: Galaxy Tab 2 7" 3110 Wi-Fi only
ROM: Jelly Bean 4.1.1 P3113UECLI4 from this XDA thread
Launcher: GO Launcher EX (not HD)
Notable Root applications: Beats! Audio-driver and "Fullscreen" to hide the navigation bar, both from the market
Screen: At permanent 70% brightness
Other: Background sync is off, all widgets are set to refresh between 1-3 hours only
I think this should cover it I hope. I'm not really used to tablets as like said the GTab 2 is my first tablet so I have not much to compare it to but I wonder if it's normal that the device gets pretty warm on the back while just browsing the web and using TuneIn Radio? That's all I did yesterday night and after about 10-15 minutes I didn't found it too hot to touch but it was still slightly uncomfortable :/
The battery-life also doesn't seem to be the greatest as it seems to actually drain power from the battery when plugged in to a regular USB 2.0 port. I understand that tablets can't charge from USB 2.0 unless they are in deep-sleep though is it normal that they actually drain power? o.o I can see my percentage drop by 1% every 3-10 minutes depending on what I'm doing while connected to my PC, though it charges fine if I let it go into deep-sleep...
And to finish this post, here are two screenshots of my battery information:
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Thanks for help in advance!

70% brightness? that explains a lot about battery drain...
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crjs said:
70% brightness? that explains a lot about battery drain...
Sent from my MB865 using Tapatalk 2
Click to expand...
Click to collapse
Ehehe well I guess I'm just used to a bright screen from my iPhone 4, since I disabled all background things I don't need my iPhone 4 lasts me about 3-4 days without a charge at 75% perma-brightness and doesn't get hot unless I forget to lock it and fall asleep^^; I dropped the GTabs brightness to 50-55% now and enabled CPU power-saving, things seem better but I will report in a few hours for more accurate results

Higher battery use on 4.4.1 - here are my battery stats!

Ok. On 4.4 (with linaro version of franco kernel) i could leave wifi on and overnight get 2% battery loss.
Now on 4.4.1 (again with linaro version of franco kernel) i get 5% overnight loss. Nothing else has changed!???
Here are my battery stats...
(i plugged it in just before bed so it'd reset the 'unplugged')
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Sent from my Nexus 5 using Tapatalk

I think betterbatterystats is what causes the battery drain in 4.4.1, i uninstalled it and no problems.

Based on the screenshots (log from BBS would be better as some stats are missing in your post) you've got WiFi on with few applications utilizing it. Like SwiftKey, Facebook and few others. Review your WiFi configuration (you may also need to remove/forget your WiFi network from the phone and configure it again - that seem to fix certain WiFi issues at 4.4.1) and check again.Also try with WiFi off for comparison.

Thanks I've just forgot the wifi and rebooted then re connected, I don't get why SwiftKey is using it? It's a keyboard!?
Sent from my Nexus 5 using Tapatalk

5% loss overnight is still decent I would take that

mine seems ok
edit. seems the pic has gone wrong. it shows the battery going up a few per cent overnight

I know but it's over the double the 2% i used to get!
Sent from my Nexus 5 using Tapatalk

I also feel the battery drain quite a lot faster. About two times faster when idle, and i see quite a lot "awake" caused by the Android System when the screen is off.

@wheilitjohnny
that must be coming from some process. I don't have such issue, it's pretty much the same as it was on 4.4.

I've not changed any apps etc since tho. That's what's annoying
Sent from my Nexus 5 using Tapatalk

What's wrong with this thread http://forum.xda-developers.com/showthread.php?p=48258563. No need to start new threads

Battery drain from a non-running app?

Hi. Its been a few days since my Nexus 5 battery has been drained pretty fast. Lasts only about 4 hours after fully charged with little use. Since I recently started working in a really poor reception area I figured that was the problem, my phone constantly trying to find a signal, but when I go to the details, I see that Instagram is responsible for using up 40% and it wasnt even running!
Im no developer, or even experiencied android user, but, how is this possible?
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javiwankenobi said:
Hi. Its been a few days since my Nexus 5 battery has been drained pretty fast. Lasts only about 4 hours after fully charged with little use. Since I recently started working in a really poor reception area I figured that was the problem, my phone constantly trying to find a signal, but when I go to the details, I see that Instagram is responsible for using up 40% and it wasnt even running!
Im no developer, or even experiencied android user, but, how is this possible?
Click to expand...
Click to collapse
Welcome to android and app permissions. It's accessing a number of things on your phone with location probably being the number one. Get something like xposed and app ops to tame what the app is allowed to access. You should also get gsam or BBS to get a closer look at what is using your batery.

This happened to me last night with a messaging app I used to replace hangouts. It dropped about 12% overnight with data and WiFi all off.
I looked in battery use and messaging sucked most if it up. I cleared data in the messaging app and that fixed it. Later today I switched back to hangouts until I download another messaging app. I don't trust that one now.
Sent from my Nexus 5 using XDA Free mobile app

Thanks for your reply. I'm guessing I need root for Xposed and those other apps ? Like I said I'm just an ex iPhone user who just converted to Android. So haven't given myself the time to tweak around.
Sent from my Nexus 5 using Tapatalk

you dont need xposed. looks like instagram had a stuck process or was stuck syncing. a reboot usually fixes that. there are other ways to fix things, other than installing xposed(as xposed could bring in its own issues). there are many apps out there that help, greenify being one of them. also, there are a few great apps to help you stop wakelocks that are out of control.

Battery life

So I came from the note 4 and thought I would see better battery and screen on time. I see the posts in the note 5 thread that people are getting 7-10 hours of screen on time and maybe the most I can get is 5. Is this from the sprint cell service or something else. I have a lot of apps disabled with package Disabler and I am not rooted. What are your battery stats?
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Sent from my SM-N920P using Tapatalk

Just about the same as yours. I get about 3 hours of screen on time. However, I do leave wifi, gps, and Bluetooth on all the time. I have a bluetooth headset connected for the majority of the time.

Most I get is about 3.5 SOT so I would say you're getting pretty good battery life.

Confused about the Office apps.
My battery life is good so I can't complain but I find that the pre-installed Microsoft Office apps are taking up quite a bit of my precious juice. Since I have not rooted yet I can't freeze these apps. Is anyone else consistently noticing these apps at the top of their battery usage?

You can use package Disabler to freeze apps.
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I get great battery, just deboated and used an app called kernel toolkit.
I get 6-10 hours on screen if not more and all day battery with screen off, but my phone is seriously deboated and most apps stopped from starting.

I get over 3 hours in a 16 hour day. It's not great, but more than enough to get me through the day. The fast charge also helps for the heavier use days.
Sent from my SM-N920P using Tapatalk

unisoul333 said:
My battery life is good so I can't complain but I find that the pre-installed Microsoft Office apps are taking up quite a bit of my precious juice. Since I have not rooted yet I can't freeze these apps. Is anyone else consistently noticing these apps at the top of their battery usage?
Click to expand...
Click to collapse
Yes Microsoft Word was murdering my battery.

And how is your Battery doing today?

Hellou!
Last couple of weeks i'm maybe (not sure) noticing slight decrease in battery life even with greenify, deep dozing and tweaks enabled / set.
- In general i have my Z5 set to be very cool and lasts long when dozing ( for real i mean) and to "turbo" battery drains like hell when gaming, multitasking....
And i preety much like it this way, ouh i have battery charging optimized set to on...
- Today i checked my friends z2 whit hidden service menu and tried z5 to see how it holds up, this is what i get in battery test:
https://www.dropbox.com/s/e9vd2vd1kg4762r/Batterybad.png?dl=0
Should i be concerned or is this normal wear and thear Phone is 12 months old
So i am curious to see what you get in your service menu
Service code is *#*#7373423#*#*
Greetings!!!

Hello,
Last Friday and Saturday I also suddenly had problem with my battery.
When fully charged the battery sudden died after 2 to 3 hours of use.
I had reset my phone to factory settings and used the following procedure:
Make sure to turn off stamina, go to settings - apps, tap on 3 dots to show system. Scroll down to stamina mode, force stop it. Then under storage tab, clear data. (Stamina was not started for me btw).
Force stop your device with power button and volume up at the same time until you feel 3 vibrations. Turn the phone back on.
If I use your service code it did not work, note the typo: *#*#7378423#*#*
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When doing the battery test I have now a healthy battery. The battery seems to last much longer.
(For safety I ordered also a new battery for replacement, my Z5 is already more than two years old...)

yeah same with me my battery stands on like barely one day I must do something with it
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