Hello.
I am having problems with the battery because drains a lot (5% per hour without wifi, 3G, screen off, etc). I looked for this problem and I found that other people resolve it installing francokernel (http://forum.xda-developers.com/showthread.php?p=36553244). The problem was that the tablet uses the 3G even if no SIM card of 3G off.
But, I have installed the francokernel and the problem keeps and I don't know why The francokernel reduce the problem of 3G but my battery keep draining a lot. Can you help me ? I attach images from betterbatterystats. The test is with wifi off, 3g off and only facebook, twitter and whatsapp installed. The model is Nexus 7 3G
Thank you.
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uninstall facebook
It's draining because there is something not allowing it to go to deep sleep. Install cpuspy or similar that will tell you what the CPU is doing.
EDIT: I know there are photos but only a couple are showing up for me.
Sent from my Nexus 7 using Tapatalk 4 Beta
It's definitely doesn't appear to be Facebook or a lack of deep sleep. Despite not seeing the infamous Google services, you may want to verify your location settings as that can override you turning off wi-fi and mobile network.
Sent from my SCH-I545 using Tapatalk 4
I have tested again with CPUSpy (wifi off, 3g off, only I have used 5 min, ...). Now, I see the wakelock PowerManagerService is on 33 min. At any rate, 90% of time the tablet is in deep sleep mode and drains aproximately 6% per hour. I don't know why happen this ... Is it possible that in the deep sleep mode the frequency would be high ?
I attach images of betterbatterystats and CPUSpy. Sorry, I can't upload picture o links (but in the first message I can do it). I put the links below with a "-" behind "http".
Thanks
http-://i42.tinypic.com/mvp8wk.png
http-://i42.tinypic.com/2vrs8cz.png
http-://i44.tinypic.com/2qdmzv8.png
http-://i39.tinypic.com/a9tfnc.jpg
Try restarting your N7. Every time i have this problem I restart my tablet and the battery draining goes away for about a week
Related
ok 27 hours since unplugged.... and 71% BATTERY LIFE? mind you display was used 1hr 58 mins too and brightness is set to auto not lowest setting or anything!
WIFI was on for a total of 17 of those 27 hours tho
WIFI POLICY SET TO NEVER SLEEP
GPS OFF
USE WIRELESS NETWORKS ON
Baked snack rom 1.3 set cpu is clocked at 1.2ghz out of a possible 1.3ghz
2 google accounts 1 syncing emails the other syncing contacts & calendar
facebook is syncing every 24 hours
Drm not present in this baked snack rom 1.3
The proof is in the pudding people WIFI is a HUGE!!!!HUGE!!!! battery saver
we are talking an easy 300% better battery over 3g! at 27 hours I would be at about 25% or less not 71%
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nice but try it with pure 3g ?
Very nice indeed but our phone uses the old 3g radio instead of rev0 so our battery will doe quicker which id why wifi is a huge difference.
Sent from my SPH-D700 using Tapatalk
recall! lol
In other words, you are saying the battery doesn't die quickly if you don't use it as a phone, and don't turn it on?
You can still make phone calls and send/receive text when 3g is off.
Doing this will save battery life noticeably.I was turning it off, before the last update.
Battery life was horrible then. Installed a data/3g off and on widget to do this easy.
After the last update, battery life was awesome and I did not have to do this anymore.But I still have the widget, in case I get into a situation that I cannot charge the phone and I will use this method to conserve power
I never tried the wifi thingy though
This is mixed use of 3g and wifi. Beat that...
Sent from my SPH-D700 using Tapatalk
My note 3 battery is horrible I downloaded wake lock
Here are 2 pics
Any advice?
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Here is another
My phone has been in my pocket all day not being used until just now when I made this post
I should also mention it is fully stock
looks pretty standard for stock to me. 5 hours for 23% of the battery? That means about 20 hours a cycle? seems very standard for stock.
If you want more then you gotta go custom ROMS and Kernels.
If your rooted use SET CPU to make phone clock speed 322-400 mhz when the screen is turned of.
But why is it awake so much?
Search for "AndroidOS Bug" and you'll get the answer.
Gesendet von meinem SM-N9005 mit Tapatalk
This bug really makes it hard to enjoy the note 3 as a whole. I was plagued by this pretty badly until recently I sort of found a workaround.
Some time ago I found out, that in offline mode the bug is not present. I came across it, when i was in our datacenter where the cell signal is a nightmare. I turned on offline mode and switched WiFi back on (thankfully we have a WiFi active there) and the battery drain was very low with active WiFi and bluetooth (headset connected) over a period of several hours.
I did still encounter the Android OS bug afterwards, but then once after my phone was fully charged, I put it into offline mode for some time (30 secs or one minute) and then switched back to normal and that day I had exceptional battery life (whole day = ~12h with some time checking, messaging and checking mail, with ~70% battery left) which i assume must be the actual battery life that the phone is capable of without bugs.
So long story short:
possible workaround for the Android OS bug: put phone in offline mode for ~1 minute, then back into normal mode
I would love to read if somebody tried this and gave some feedback.
Hello,
I've experienced a sudden change in battery performance.
What used to take around 50% of battery now takes around 85%.
It happened recently, around the same time I started working at a new workplace. The reception is horrible there, maybe that's the issue. However during the weekends, it is around the same.
I was on 4.4.2 stock when it happened and since then I've flashed it again once. I've also tried a couple of different radios (and enabled LTE) and I've always had franco kernel.
Brightness was always on Auto (which I shall turn off to experiment battery life) and wifi is selected to be off when the phone is off.
I have still a few more experiments to do, but I'm considering using warranty services. What do you guys think? It's clearly not as bad as some of the other battery issues I've seen on this forum, but it's quite the change for me. I bought this phone in July 2013.
Here is an example battery usage graph. Charging finished around 1 AM and left it unplugged over night. In the morning (~7 hours) the percentage was at 75%. (5% / hr) Throughout the day, I have used it for text messaging only and by 6 pm, it's at around 13%.
Thanks for taking the time to read my long post.
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You can check what drains battery with BetterBatteryStats. Google it and you'll find.
Thanks for replying.
I have tried that before an OS reset although I couldn't make much out of it. One main thing I noticed was a certain kernel wakelock which, after I googled, was responsible for LTE connectivity. Although this makes sense, I had good battery life even with the LTE chip being used (& auto brightness / wifi always on) prior to this battery incident. By good battery life, I mean 50-60% used by the end of the day
Hi everyone,
So I've had my 6P for a bit over a month now. However I never got it to Doze much (maybe once a night, but I lost 4% for a 6h night so I'm not sure).
The day before yesterday I installed Greenify to try to use Aggressive Doze. No result. Today I rooted and installed Naptime, and no Doze either in Aggressive mode.
Is there something I've missed? I've noticed my Awake graph is weird, phone always waking up.. (see screenshots).
Should I clean flash? I already wiped cache.
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By the way I'm not getting terribly bad battery life either but still. I think I can squeeze a bit more. I am always between 2 and 3h of screen off.
Thanks a lot!
Sent from my Nexus 6P using Tapatalk
Maybe check to see if WiFi and BT scanning is on? Also I read somewhere that the gasbuddy app has bad wakelocks
Same problem here. It's wifi. As a test, turn off wifi scanning in location and then wifi itself. Leave overnight and then observe phone is no where near as awake as much.
thehunt33r said:
Hi everyone,
So I've had my 6P for a bit over a month now. However I never got it to Doze much (maybe once a night, but I lost 4% for a 6h night so I'm not sure).
The day before yesterday I installed Greenify to try to use Aggressive Doze. No result. Today I rooted and installed Naptime, and no Doze either in Aggressive mode.
Is there something I've missed? I've noticed my Awake graph is weird, phone always waking up.. (see screenshots).
Should I clean flash? I already wiped cache.
By the way I'm not getting terribly bad battery life either but still. I think I can squeeze a bit more. I am always between 2 and 3h of screen off.
Thanks a lot!
Sent from my Nexus 6P using Tapatalk
Click to expand...
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Did the Financial Times create that theme?
Sent from a 128th Legion Stormtrooper 6P
I'm using redmi k20 Indian unit from last 15 days. its running on miui 10.3.8.0 with august security patch.
these numbers looks impressive and tbh the standby is very good. it drains about 2-3% overnight in standby but but my problem is when i use it for like 15-20 mins for watching videos on YT or Netflix or even some offline videos it drains the battery drastically. and i only play this one game MLBB. if i play this game for like 15-20 mins max it takes up to 4% of the battery. i switched off the auto brightness,set the contrast to constant mode, ambient display is off. i don't use wifi or mobile internet on idle mode. i optimized the battery use for each of the single apps, location service is disabled, auto bluetooth and wifi scanning is off, set the network to LTE/UMTS(*#*#3646#*#*), google play services cache is cleared. i tried every possible option to improve the battery life and even hard reset the phone. from being a heavy user i turned to a casual user now for this issue. on antutu it showed current estimated battery capacity is 3580 mah where the design capacity is 4000 mah. im really confused now. is my battery damaged? is it normal with this device? is this kind of battery drain is normal? if i flash another ROM will it solve this issue? should i wait for upcoming updates at least till miui 11 or android 10? someone please reply to these queries and tell me if this problem is resolvable.
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for some reason i cant post the screen shots
Please.
We already have a topic regarding battery issues, SoT times etc. There is no need for another one.
https://forum.xda-developers.com/mi-9t/help/battery-life-sot-t3949855
If I watch yt videos I can easily squeeze over 1hr20min SOT in 10%
Found a Solution yet?
Hi, Were you able to find a solution to this?
I could not find anything useful on the SoT thread.
I can't believe this SOT time and the drain, but will test my standby time, while sleep.