Wlan_ctrl_wake is killing me - Galaxy S 4 Q&A, Help & Troubleshooting

I have been using my s4 for 3 weeks and very happy with my battery however since this morning 3 Wakelocks are draining my battery like vampires. Wlan_ctrl_wake and l2_hsic and rpm_hsic. They appeared out of nowhere as I haven't changed any modem or kernel. I lost 4 prct in 30 minutes without any partial Wakelocks
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This is getting ridiculous.
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Battery life discussion

I'm new to Samsung and touch wiz.
Any tips on settings that will help battery life?
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Dreadsteel said:
I'm new to Samsung and touch wiz.
Any tips on settings that will help battery life?
Sent from my SAMSUNG-SM-N900A using Tapatalk 4
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Turn off all the gimmicky smart features and disabled as many of the bloatware apps that you can.
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delete
Battery life for me has been stellar. Yesterday was the first full day of use for me and I was at 15 hours with 56% percent of battery left with 3 hours of on screen time. I haven't changed a thing as far as controls. Today I've turned off a few of the finger controls and will see if it saves me anything.
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Oh nice. Let's start posting gsm battery stats. I'm on my first full charge so will report back.
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Battery life has been good on mine so far. Make sure to turn the always on wifi scanning off! Made a world of difference for me.
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On my first charge I got 6 1/2 hours with half on screen time playing games, surfing web etc. and had 50% left! My s4 would have died twice by now.
inmotion said:
Battery life has been good on mine so far. Make sure to turn the always on wifi scanning off! Made a world of difference for me.
You should tell people how to do it. Wifi> advanced> uncheck always allow scanning.
I had totally forgotten about this. But even without if off I was getting 18 hours of heavy usage, no wifi and on lte. This phone, even without turning stuff off has the best battery life I've ever experienced from an android.
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Is this normal seems sort of low I turned off all the samsung features disabled all of att bloat I did not use power save feature
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mike123475 said:
Is this normal seems sort of low I turned off all the samsung features disabled all of att bloat I did not use power save feature
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That's kind of weak if you ask me. I have 64% battery left and have 2 hrs 33 min of on screen time in 10 hours
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bkeaver said:
That's kind of weak if you ask me. I have 64% battery left and have 2 hrs 33 min of on screen time in 10 hours
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Damn hmm and your not using the power save feature correct? I'm thinking about taking it back to att to switch it out...
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mike123475 said:
Damn hmm and your not using the power save feature correct? I'm thinking about taking it back to att to switch it out...
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No not using the power saving mode at all..
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This too
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Great battery here
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..
Sent from my SAMSUNG-SM-N900A using XDA Premium 4 mobile app
Getting the best battery life I've had with a phone. So far it's been on over a day with auto brightness, LTE, push email, and Wi-Fi when available and it's already hit 6hr30 min screen on. Plus there's 23% left?! Im impressed.
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Battery life has been excellent so far. Got 2 hours of screen time and only used 19% so far
Tappin From My N3
Here's mine for today, unplugged the phone at 96% when I woke up this morning.
Sent from my SAMSUNG-SM-N900A using XDA Premium 4 mobile app
Battery is killing it compared to my galaxy s3. Disabled the extra features, blue tooth, also played music with the screen off for about 2-3 hours with power amp.
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Sent from my SAMSUNG-SM-N900A using xda app-developers app

Battery life is horrible!

I purposely left my phone off charge over night to see how much battery drains. In 8 hours it drained 20% with is wrong??
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Sounds like your device isn't sleeping. My standby battery life is excellent, less than 1% an hour. On my old N7 I had to turn WiFi off to get good standby, on this one I usually just leave it on as it still doesn't lose anything to speak of.
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So yesterday I spent the day rooting and installing CyanogenMod and still I'm losing 2.5% battery an hour in standby/sleep mode! What's the deal?
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staceenmiked said:
So yesterday I spent the day rooting and installing CyanogenMod and still I'm losing 2.5% battery an hour in standby/sleep mode! What's the deal?
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Deal is stock will always give you the best battery life. Also, ROMS usually take few days to settle after flashing.
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Get the app Better Battery Stats to find out what's keeping it awake.
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Overheating / battery drain

My droid razr m feels very warm and the battery is draining very quick.
It started 4 days ago. All of a sudden.
The phone is rooted.
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Did you install any apps?

Severe Battery drain

So i am going to put this out there for some advice on what is going on. I've had my N3 for a few months and battery life has been outstanding. But recently it has been terrible. I use wifi most of thr day and I only have GPS on when I need it. I had an issue yesterday with com.samsung.indexservice using literally all my battery. Reboots and battery pulls did nothing. Then after a full charge last night I unplugged and left the house. These are my results. Indexservice is not using battery but something else is. I'm clueless to what it is. Any help is appreciated. I am not rooted and do not intend to.
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Ok so now Indexservice I eating my battery
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Sent from my SM-N900V using xda app-developers app

Questions about bat

Hello i have experienced with a slight battery drain... Is this normal?
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About phone
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Your battery stats will not be accurate until you drain more of your battery.
Buckii said:
Hello i have experienced with a slight battery drain... Is this normal?
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Slight battery drain? Your phone was only on for 17 seconds. Are you trolling us?:laugh:
I wish I was trollin, really though... I had just pulled it off the charger at this time but typically average use would kill the battery after say I pull it off at 10am ish... To about early evening
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Just use it normally till lets say 50% and then post Partial wakelocks tab of Betterbatterystats application.
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