Related
Is it just me or is it getting old with everyone CLAIMING "best battery life" when you usually end up with the same or worse than a stock HTC kernel?
I have tried NetArchy, KingKilck, and a few others only to have my phone die in the same amount of time or even sooner. Why is this? Well what you all don't do is take into account the MANY different variables that affect battery life.
The thing that tanks my battery the fastest is the fact that I work in places with low (10-30%) signal. This kills the battery because it is constantly searching for a signal and talking with the cell tower. I am willing to bet most people that have bad battery life are in low coverage areas. I simply have learned to put my phone into airplane mode and have people text me on Google Voice as I still have a WiFi connection. WiFi uses FAR less power then the cell radio in low signal areas and you can still maintain connections if you have everything setup right.
I am NOT in any way bashing the work and effort that has been put into these kernels but with the latest HTC kernels having unlocked FPS and great battery life why would I want to even mess with a custom kernel? The only reason I could see is for overclocking. I wouldn't even run one for underclocking as I have found this to NOT be an effective way to prolong battery.
Just thought this needed to be said. What I have said here also applies to collin_ph tweak. There have been many reports of the "tweak" killing the battery even faster and I have verified this.
Mostly true, but I think it really depend on what rom, and kernel you are using, plus your signal strengh.
I've flashed very often since the day I got the phone to get maximum battery life out of it, and netarchy's usually worked for me.
I've also tried stock/default that came with Myns 2.2, and best combination that worked for me are Myn's 2.2 and Netarchy's 4.2 cfs havs smartass more agressive kernel.
there are too many kernels out there and you just have to find a working combo that works for YOU at the end of the day buddy.
Oh and I totally agree with you on this thread that it does get annoying/frustrating to see these threads, and you decide to go with it, and it turns out to be a crap.
I've tried a lot of things and never really gotten better battery life than stock, but I have gotten about the same with better performance, which is good enough for me.
The only thing that really improved battery life for me was butchering the phone - turning off background data and auto-sync and using JuiceDefender (disable mobile data when the screen is off, turn it on for 1 minute every 15 mins). But I decided I prefer using my smartphone as a smartphone.
I've come to accept it. My average battery life on weekdays is 8-10 hours. I wish it were 12-14, but I can live with it. When I stay at home on weekends, where I have Wifi and good cell signal strength, I generally get 20-30 hours with moderate use.
I live with plugging my phone in at work, and I got some of tuttoit's cheap batteries off eBay. It works well enough for me.
Anytime you flash a custom kernel you have to give your cpu time to adjust to the new stuff included (havs,bfs,cfs,voltage...etc..)your battery life gets better days after using these new kernels not immediately after flashing...
i have flashed myn's 2.2 and using setcpu to underclock when in black out mode and using titanium backup to "freeze" apps that somehow start themselves. my batt life has gotten way better than what it was on stock os and settings. ive also tried to do the *#*#4636#*#* and cant get into testing mode to change from gsm to cdma but im willing to bet its on cdma anyway.
houseofbugs said:
The thing that tanks my battery the fastest is the fact that I work in places with low (10-30%) signal. This kills the battery because it is constantly searching for a signal and talking with the cell tower. I am willing to bet most people that have bad battery life are in low coverage areas. I simply have learned to put my phone into airplane mode and have people text me on Google Voice as I still have a WiFi connection. WiFi uses FAR less power then the cell radio in low signal areas and you can still maintain connections if you have everything setup right.
Click to expand...
Click to collapse
You can use Roam Control to force roaming in those areas, if they have good signal strength with another carrier.
It's the same power usage as in good signal strength Sprint areas.
im still trying to find the reason for my battery drain, i get an ok battery life with heavy use, but even at idle it varies, the other day battery stated 80% all day long, i ran it down as best as i could and got it to read 10% at 4:30 in the morning, i set it to charge, wake up, unplug it, go back to sleep, wake up only a few hours later to see that my battery reads 60%, im sure that nothing out of the ordinary was running, i cant seem to figure it out, and i have done 3 hard resets to try and find out whats draining the battery, seeing how it varies and is seemingly random at times, im starting to think it may be the radio
I would highly suggest buying a extended battery. I have complained about the battery since day one. Got the extended battery at sprint for $54. I went 8 full hours.. I mean 8 FULL hours hard usage. I turned the screen off 3 times. Wanted to see how the life would be since I used to be on my for for aboutt 3 hours and it die.. today tturned on phone at 9. Its almost two.. 93%.. I did have my brightness all the way up yesterday and overclocked at 113 on interactive.. tomorrow ill turn everything on and run it hard again.. ill turn my airwave off also. I will get worse reception than u would at work.. -115 to -120.. I hit -125 already but I heard -120 is no service..
Sent from my PC36100 using XDA App
Sorry but I like my evo to stay thin. X)
Same here.. but the extra thickness isn't really much a bother to me as much as charging and carrying 2 extra batteries. 6 hours now and at 75%.. I love it.. and glad I got it. Just hope when I get a different phone I can use my extending for it. Like I had tp2 and same batteries as the evo..
Sent from my PC36100 using XDA App
Hi,
I recently flashed my G2 to the leaked T-Mobile gingerbread release: so it's not rooted or anything like that. I'm not using it any differently to how I was before.
The upgrade went very smoothly. However, the battery seems to be draining a lot more quickly than prior to the upgrade, and Android's battery usage app points a very damning finger at the display: currently it's showing 67% usage, and pretty consistently shows a high usage most of the day.
Before, I could consistently run the phone for the whole day and charge overnight, but now I'm finding that I have to charge it a bit during the day too in order for it to make it to the night.
I'm pretty sure that I'm not using it any more than usual, and I pretty much always have brightness set to 20%.
So my question is, what could be causing this? Could something be using the screen when it's not supposed to be even though it's not showing anything? Could it be a battery calibration issue? Maybe the power usage app in gingerbread calculates what it attributes power consumption to differently to froyo (though that wouldn't explain the overall reduction in life). What, if anything, could I do to try and track this down further?
Any suggestions would be appreciated!
Some things I should add.
I really haven't changed my behaviour regarding how I use things like wifi, bluetooth and gps. In fact, so far I actually have one fewer gmail account set up on it that before the upgrade, so sync should be doing less work. The apps I'm using are all about the same.
When I said I could use it for the day, I mean it would often end the day with more than 50% battery left. On some days I'd get it down really low, but that would be due to obvious extra usage, which isn't the case here. Occasionally I'd let it die completely. I always charge it fully overnight.
Finally, here are the other top items in my power consumption list at the moment:
Display: 67%
Maps: 8%
Cell standby: 7%
Phone idle: 5%
I seem to remember that before the upgrade, Cell standby and Phone idle were usually the top users of power.
no problem
Sorry, but I don't see any problem. Maybe its just placebo. This is the same on every android based phone. I Had HD2 and had 2 NAND androids till now and the battery stats were showing also display use 60% and then after new NAND version - gingerbread they were up to 80%+ but the battery was better than ever before.
Let me explain it to you. The display should consume most of the battery if you have 3.7 inch display and more. Maybe some navigation and 3G is the biggest sucker like the display but with normal use the Display. And if your display consumes lets say 75% of battery over when you are at 1% battery then it means it sucked 3/4 of your battery and just 25% other things did like phone idle and cell.
If it was before and your display consumed like 40% or less that meant that the other things like cell standby, phone idle consumed more power so it wasnt battery efficient. So its more battery efficient. Maybe you just have much more awake time than you did before. The awake time - sucks the hell of your phone(some apps warn you taht your phone wont turn to the sleep, which means your processor is still working hard which means your battery will deplete completely in a short time)
I experienced this also that my phone lasted only 6 hours or so and before it could wen to all day . Then I deleted some apps which were causing it and my battery was perfect.
and last advice. try to charge your phone via USB, I dont really know why it is caused but it will last longer , but on the other hand you will have to charge it longer. But if you go somewhere where the extra juice is needed then its nice.
With these steps my HD2 with old battery (about 1000mah left on 100%) went through 2 days of medium USE and about 5 days of just receiving calls and messages) so I dont know anyone else who could say that !
ยจ
hope I helped you. GL a HF
If you can stand it, turn the brightness as low as you can handle . EDIT, you're already doing that....hmm
Not sure why gingerbread is giving you problems, personally I find it slightly better with battery than froyo.
Sent from my T-mobile G2
Hmmm... placebo. By that, I presume you mean that since Display is ranking higher in the list now, that's making me think more battery is being used before. I suppose it's possible, but really it's more to do with how often I've been reaching that "I should charge" point, which for me is a function of battery level and time. If I get to 50% before lunch time, I think "I should charge". But getting to 15% just before bed I don't. What I've noticed is that since the upgrade I've reached the "I should charge" point every day.
I'm just very surprised by how the proportions in the battery usage list have changed, while a the same time the phone's battery usage seems to have increased, despite the fact that Gingerbread's battery usage is supposed to be improved.
One other thing that came to mind: perhaps Gingerbread's battery usage is just more accurate than Froyo's? It always seemed to me that the battery level used to work a lot like a car's fuel gauge: it would stick at 100% for a long time and then would drain. It was as though "full" as a concept understood by Android was a range rather than a limit, and so as a result the phone appears to drain more quickly, but it's actually just showing a more accurate battery level over time. Just a theory.
So last night I allowed the phone to completely die. This morning I switched on and immediately checked battery usage: display showing 99%, which is exactly what I'd expect. So I'll see how it goes now that Gingerbread has experienced battery exhaustion.
Personally, if I was upgrading from Froyo to Gingerbread, I'd prefer to start from scratch rather than doing an "in-place upgrade". I'd worry that maybe there are some leftover settings or files from Froyo that could cause unintended consequences. Consider backing up as much data/apps as you can (it's more difficult if you don't have root), charging the battery up to 100%, doing a factory reset, and then restoring and reinstalling everything back. Doing this will also reset Android's battery stats file, so you may find your battery levels maybe inaccurate while it's relearning the right levels for a few days.
Alternatively, if you don't fancy a factory reset just yet, you could try monitoring your power use with a widget like CurrentWidget which looks that the current draw rather than percentages. Also consider installing Watchdog Lite which might be able to help you identify if there are any processes using excessive CPU cycles.
EDIT: Just realised that if you flashed a leaked version, the install would probably have wiped everything anyway, so you can probably disregard the first paragraph.
Like the others have said, I think the screen usage being higher in 2.3 has more to do with the reduced usage of other apps and not the screen using more battery than in 2.2.
Think about it, most of the high battery usage items (web browsing, etc) also keep the screen on at the same time.
Yes, that's probably mostly because other things are using less power. I also suspect that maybe Gingerbread's battery usage app is calculating display usage differently: I just checked it on someone else's G2 (still running Froyo) and Display was way down the list. It dominates mine, even though I haven't used it that much today.
Today's power consumption has been a lot better. It's down to 39% now after 12.5 hours on battery, with 59% of that being attributed to Display. So that's not bad at all really.
Thanks for the tips on the monitoring apps. I'm already using System Panel (which only seems to care about apps and not hardware so much), but it's always worth checking out alternatives.
Couldn't it be due to you being in areas with bad connection?
I noticed that my G2 is down tot 30% after a few hours at school in bad reception+bad wifi areas. When I'm home the whole day my G2 is still at 60% at 10pm.
I have 2 exchange mail accounts set up to push and one gmail account...
Sent from my HTC Vision using XDA App
Friend has a new Desire Z (bell, unlocked). Using it on AT&T network.
When at a house, and we use WiFI (30Mbps DL, 25Mbps UL), the speeds are VERY inconsistent. With my iPhone 4 using speedtest.net, it shows up as 20/15 each time. (WiFi is a little slower than the modem).
With the Desire Z, we get 15/10 (which is fine/acceptable). Then 3 minutes later we do it, we get 5/2. Without even moving the phone or touching the modem connection (not downloading anything on the computer), the connection just gets slower. Then it might be fast or slow, basically it's a toss-up.
The first time we noticed the issue is because when we are outside, we get HSPA speeds of 2.5/1.0, then randomly decreases to 0.1/0.05. HUGE difference. And VERY inconsistent. He is using a microSIM from iPhone 4, with an adapter, so we figured maybe the SIM card is getting loose at certain points? However, the WiFi is also inconsistent in addition to the HSPA, so it's probably not that.
What should I do? Is this the situation where I have to flash a new radio or something? (Please suggest others if I am wrong).
Thanks!
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Also, his battery is kinda weak. The battery health is apparently clean/healthy. He came from an iPhone 4, where he would have 3G, WiFi, and GPS on at night but not actually using them. Wake up, and 3% battery loss, maybe 5. WITHOUT using them, just having them on.
Now, with the Desire Z, we have the WiFi + 3G on, but NOT the GPS. He is losing 20%-25% in 8 hours without even using the phone.
Information about battery shows a high Cell standby (25%) and Phone idle (25%) percentage. When going into Spare Parts > Partial Wake usage, we didn't find anything really fishy. BUT we had rebooted so perhaps some info may have been lossed. Should he just go to sleep tonight and report the Partial Wake Usage statistics again?
We have a feeling it may be some apps refreshing at night.. But he clears all the apps with Advanced Task Manager except for like Facebook (2 hour interval refresh), GMail, and Google Voice.
I highly doubt a 20% battery decrease overnight is normal.. My mom's Atrix only loses about 5% overnight, with the same parameters I gave before.
I thought it may be a bad battery, BUT the phone idle + cell standby are abnormally high.
Thanks!
Why is this in General as well as Q&A?
Put this in Q&A, didn't get any answers. Went to General, saw that more people posted there, even for Q&A's. Have an actual problem that research didn't help much with, so made a thread. If necessary, I would be glad to remove the thread on Q&A.
By the way, thanks for the answer .
Would you be able to post your software specs? Radio version, rom version, android version? My Bell DZ only loses about 3% per night if I don't plug it in to charge. I, like you, have wifi, gps and hspa enabled with no huge I'll effect.
The stock battery is usually alittle weak. Being a 1350mA, it doesn't have the capacity either, but that is why it is user replaceable. I picked up the mugen 1800mA battery that gives the phone the stamina to last a full day of full use or 2-3 days of light use. I forget how much I spent on it but it was definitely an upgrade.
As for the signal issues, we would need to know what you are running. The latest .30 radio is recommended for AT&T if I remember correctly. Also, the type of rom (stock or custom) might give us abit more insight.
Sent from my HTC Desire Z using XDA App
I lost about 10% overnight today I believe, possibly 15 (don't remember exactly what I left off at).
Not sure on all the stats because I don't know how to check them but
Android Version 2.3.4
Cyanogenmod 7.1.0-RC-Vision (seller did it for me)
What is the radio version? I think that is baseband not kernel? If so its 12.52.60.25U_26.08.04.30_M3
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If anyone knows about the sporadic data, that'd be helpful. It does seem that if I go into airplane mode a few times it fixes itself, but I doubt everyone does that to ensure fast HSPA speeds
Sent from my HTC Desire Z using XDA Premium App
I've never used CyanogenMod Custom ROM's before, so I can't speak from that experience. I can, however, tell you that while running RMK (and team's) Custom ROM's (Virtuous, G-Lite, Unity) and now MIUI, battery life has been excellent, even with the stock battery. The current build of MIUI lasted for about 15hrs on a day of full use, RMK's ROMs would last about 12-15hrs of moderate to full use on the stock battery. Alot of the custom roms have different power management settings and tweaks, if you're comfortable with flashing, I would recommend another ROM and see if that helps with either of your problems.
If you like the Vanilla/AOSP look of android, try RMK's G-Lite ROM. It is very lightweight, fast and stable. I remember having one issue with it, but it was a very small issue and didn't stop me from using it for a few months.
I am currently on MIUI English 1.7.1 and with moderate use I am sitting at 50% charge spent over 2 days. Moderate for me is about 300 texts with about 10 phone calls and a total of about 4hrs of web browsing.
I can link you to those roms if you need, but they're all located in the Dev section. Your radio seems like it's on the right version, so perhaps it's not the issue. Try running another rom for a week and see if that helps to any degree.
I re-calibrated the battery, let it die, charged it up, let it die, charged it up. I followed the instructions to the letter and all that.
It was at 100% when I went to sleep. Woke up 8 hours later, 74%.
Settings > Battery shows nothing high 40% for cell standby and phone idle. Everything else (Facebook, etc.) REALLY low.
Then I went to Spare Parts > Battery Usage, Partial wake usage, everything incredibly low as well..
I will try Watchdog, but could it just be a bad battery? Or maybe should I try a different ROM?
Thanks!
JayXL14 said:
I re-calibrated the battery, let it die, charged it up, let it die, charged it up. I followed the instructions to the letter and all that.
Click to expand...
Click to collapse
NO! This is poor recommendation, and people need to stop perpetuating it. People keep recommending this, but its NOT a good idea to let the battery drain until it dies, just to calibrate the battery meter. While the protection circuit on the battery will USUALLY prevent over discharge, it is not 100% failsafe. There is a slight possibility that over-discharge of the battery will happen, and then the battery is no good, and will need to be replaced. Unless you have a special battery meter with a "boost" function (which most people do not have access to). See the following table on Battery University, where it says for Li ion batteries: Discharge: Prevent full cycles
http://batteryuniversity.com/learn/article/do_and_dont_battery_table
Best practice is to charge to 100%, drain to about 20%, repeat a couple times. No need to go below 20%. The battery meter is not very accurate to begin with, so there is no value added going to 0% versus 20%, but you risk killing the battery.
Plus people keep abusing the terminology. You are just calibrating the battery meter, not "calibrating the battery". When people say this, I think its just a holdover from the old days of NiCad batteries, where you had to condition/discharge the batteries periodically to prevent memory effects (Li ion batteries do not suffer from memory effects, and require no period cycling).
Can't really speak to the Atrix or the iPhone. But the battery drain on the DZ described by the OP is right in line with what I've seen. I also have an unlocked Bell DZ on AT&T, and battery drain of 2-4% (on various ROMs and couple different radios) when the phone is completely idle, screen off is totally normal. Best I've seen on my DZ is with the Virtuous Unity ROM and the .30 Gingerbread radio, where I've seen somewhere around 1-2% drain per hour when idle.
One possibility, is that the different phones are not reporting % battery the same way. As I've mentioned above, the battery voltage meters on phones is not very accurate, maybe in the range of 5-10% accuracy (although, even with this, the drain on the DZ versus the ATrix and iPhone still sounds inconsistent). But what is more important is how many hours of usage you get before needing to charge.
Thanks for the info.. Ill try charging that way.
And I honestly think the battery is just reading it wrong. It honestly feels like it dies faster idle than not, go figure. Yesterday, at like 10% battery, I wanted to kill it off, and played a game for like 10 minutes straight, still 10...
Then I tried leaving the flashlight on for 10 minutes on and it maybe lost 1
How is that battery I recommended from dealextreme though?
Sent from my HTC Desire Z using XDA Premium App
It's interesting to see all the troubles that people are getting on the DZ...
I've had my DZ for about 6months and never seen any of the reported problems.
My 1350mha will last me on a frequent usage near 24hrs and if I'm using it lightly like when i'm busy at work... almost 2days worth.
Mind you I'm running Cyanogen MOD7. No GPS. Wifi is on and I use JuiceDefender.
Cheers mates.
Last night, I charged my phone to a complete charge before going to bed to see what kind of drain I would see overnight. After 9.5 hours, my battery had only lost 2% sitting idle. That is with 3G on, but no Wifi or Bluetooth enabled.
The phone idle accounted for 47%, cell standby 48% and Android system 4%
While it seems remarkable, I'm still not convinced that its not my phone incorrectly reporting the battery level. On a typical day when I pull my phone off the charger, the first 10% is very slow to drain. Today, I have sent a few text messages and played maybe 3 minutes of word feud. That has drained 6% of my battery.
We will see where I'm at later in the day. I suspect that the actual level is lower than the 94% it is reporting. Typically, I get between 12-16 hours of usage, depending on how much I play with my phone.
Well I am at nearly 23 hours on this charge. Have used the phone rather lightly during the day. It sat idle for about 9 of those hours while I slept last night.
Conclusion: Idle drain is very minimal on my device and looks as though the percentage was being reported rather accurately. I'd say if you're having a lot of drain while sitting idle, do some digging and find what it is.
More info:
Facebook: update 1 hour
Gmail Sync: 1 hour
Fancy Widget update: 1 hour
Brilliant Quotes widget: update 1 hour
Light Bluetooth usage (about 15 minutes)
Wifi on all day (not overnight so about 14 hours total)
Screen brightness set at about 50%
Average signal strength: -100dbm
I don't know if it's my imagination, but since the 2.4.6 update, my battery life has dropped a bit. By the time I get into my office from my morning commute, I'm anywhere in the 65-70% battery life after unplugging from a full charge. I haven't done anything new. I always unplug around 8:30 am when I head out, I do some light chatting with gf, browse some sites, check facebook (usually very briefly), and maybe sometimes do a little reading on my device. By the time I get into the office around 9:30 or 10 AM, I'm usually around the 80-85% area with battery.
Lately, doing the same thing, I'm seeing the aforementioned 65-70%.
Is anyone else experiencing decreased battery life since 2.3.6?
I'm on a Tmobile Nexus S, running stock 2.3.6 (no custom ROMs).
2.4.6 ? .... maybe 2.3.6 ... and yes, I also noticed a slight increase in power consuption after the upgrade. The stand-by is still great .. about 0.8 - 1% per hour.
Sorry, yes I meant 2.3.6.
Thanks for replying Ro_explorer. Is your increased power consumption significant? Seeing 65-70% when I'm used to seeing 80-85% as I get into my office, I find, is a large change. To be frank, the battery life of the Nexus S in general isn't so fantastic to begin with... this hit makes it worse.
Anyone else?
I used to get home with about 40-50% after a whole "normal day" (unplugged at 8AM, and getting back home at ~8PM) .. now (with the same average usage) I'm getting home with ~30-40% ... that why I said "slight increase" ...
Not your imagination, I too have noticed this. I hope the next update, will fix this - as I used to get pretty good battery life (even with over 250 apps).
When I recently updated to the 2.3.6, it caused a bug of continuous reboot (every 1-3 minutes), so I had to do a hard reset - now it works fine, but I only have added back about 15 apps - and the battery life sux!
Downgrade OS' it will be ok.
This is so weird. Why is the battery life worse?
onthecouchagain said:
Sorry, yes I meant 2.3.6.
Thanks for replying Ro_explorer. Is your increased power consumption significant? Seeing 65-70% when I'm used to seeing 80-85% as I get into my office, I find, is a large change. To be frank, the battery life of the Nexus S in general isn't so fantastic to begin with... this hit makes it worse.
Anyone else?
Click to expand...
Click to collapse
You want bad battery life? Try an Evo 4g with a Sense rom. I averaged about 6hrs using a 1500mAh battery, in stock form.
The nexus is pretty light on power consumption, if you ask me. I average 15hrs on the stock 2.3.7 rom/kernel combo, with stock battery.
Sent from my Nexus S 4G using XDA App
I'm on 2.3.6 and need to charge every two days. I text a lot and do light gaming. I'm typing this from my phone. Maybe you could drain the battery and wipe battery stats? I'm not even at 50% yet and I charged yesterday.
Sent from my Nexus S using Tapatalk
I also noticed that the battery last less time
I've been waiting to see if anybody else reporting this issue
i noticed a decent increase in battery life going to 2.3.7 and thought that previously the battery life had been fairly poor :\
I am non rooted, and get around 20 hrs on light to moderate use. Again. Stock, non rooted.
How do I recalibrate my battery? I wonder if it could be that...
There are many was to recalibrate. Some involve wiping batt stats, some plugging and unplugging phone several times after charge.
I have always found that using the battery almost all the way down, but not past 5%, and then full recharge conditions it very well.
Oh I've been here to solve the problem
"Why last 2 weeks my Nexus s drain battery so fast ? or I have to calibrate it"
Thank for your notice about update OS to 2.3.6.
I think that's a root cause for me too.
1. Could I rollback to 2.3.4 ,how?
2. Does battery calibration is useful for this case , how?( someone suggest to calibrate when flashing new rom )
Thank you very much..
i want to know who have some methods to do with this stuff
borrowedchief said:
There are many was to recalibrate. Some involve wiping batt stats, some plugging and unplugging phone several times after charge.
I have always found that using the battery almost all the way down, but not past 5%, and then full recharge conditions it very well.
Click to expand...
Click to collapse
Whenever switching roms, kernels, or batteries, i always perform the following :
1. Charge to a true 100% (Battery Monitor Widget will register +0 to +2 mA)
2. Wipe battery stats using recovery (Amon RA has this option for the Evo, not sure about cwm), Battery Monitor Widget, or a dedicated app.
3. Discharge battery to 0% with normal usage. When the phone shuts down, I pull and re-install the battery and power back up (it will shutdown again very quickly).
4. Recharge battery and be on my merry way.
Sent from my Nexus S 4G using XDA App
I found one workaround solution for this issue on
ww.google.com/support/forum/p/Google+Mobile/thread?tid=1684c50cea15282a&hl=en&fid=1684c50cea15282a0004af022e5ed212
Sproogle77 's solution
Problem solved. Using the OS Monitor app, I found that the main culprit was Google Services - the Contacts sync specifically. Even though I had this disabled (only Gmail was being allowed to sync) it was constantly working, apparently trying to fix a location. The message log showed that it was generating continuous debug messages, all about locations - around 10 of these every second.
I have solved the problem by disabling 'Use wireless networks' under the Locations & Security settings.'Use GPS satellites' is still running. This immediately dropped my CPU usage - which had been running around 30 to 40% even when otherwise idle, to around 10%. Google contacts sync is now using 0% of the CPU. The difference in battery life was pretty much immediate and is now back to what it was before - the change in the slope on the battery usage graph is remarkable!
This doesn't really seem like a solution to me, and I don't know whether other aspects of my functionality are being affected, but at least my phone is properly useable again.
I'm testing for 1 day and I think that's working for me.
onthecouchagain said:
This is so weird. Why is the battery life worse?
Click to expand...
Click to collapse
One reason is that the new version of the stock kernel removed a speed stepping, so it'll power to higher levels faster, thus using more battery.
rentaric said:
One reason is that the new version of the stock kernel removed a speed stepping, so it'll power to higher levels faster, thus using more battery.
Click to expand...
Click to collapse
That actually isn't the problem. I'm using netarchy's kernel and still get this problem.
My battery life dropped from 16 hours --> 6 hours. the slope on my battery usage life is horrible the system is also awake almost constantly even when I'm not touching it / getting no messages.
I will try the fix suggested on the google support forum and see if that does the trick. sloppy update.
Hey guys.
So I noticed everyone here and anywhere else basically, complaining about the battery life on this phone after the MIUI 11 update so I used the debloater directly after getting the phone to have the best battery life possible.
Turned off all the suggested apps and services and I gotta say battery improved, but it wasn't what was promised by the phone's specs. I'm barely getting 4h SoT, without any heavy usage whatsoever, only social stuff.
The culprit for me as well has been the Android System, with over 40% drain every day. So I installed Accubatery to try and see what's happening with my battery, along with better battery stats.
What I found useful from the accubattery app is the permanent notification where it tells you, after a few seconds, how much mA will be drained in an hour of using the phone like the way you are using it at that moment. So I did a test. Had my phone on the home screen, doing nothing. After a few seconds the reading showed -180mA, which is awesome right? Then I locked my phone and left it at the always-on display for a minute or so. Unlocked it and the notification showed -980mA.
This is very VERY weird and I cannot find anything anywhere suggesting what anyone can do to combat this. I have more average battery drain when the screen is off than when the screen is on.
I have never reset my phone (and would like that to stay that way if possible) and the phone itself is a month old. It's really saddening to see other people are getting twice as much SoT.
Do you guys have any suggestions?
giorgos123 said:
Hey guys.
So I noticed everyone here and anywhere else basically, complaining about the battery life on this phone after the MIUI 11 update so I used the debloater directly after getting the phone to have the best battery life possible.
Turned off all the suggested apps and services and I gotta say battery improved, but it wasn't what was promised by the phone's specs. I'm barely getting 4h SoT, without any heavy usage whatsoever, only social stuff.
The culprit for me as well has been the Android System, with over 40% drain every day. So I installed Accubatery to try and see what's happening with my battery, along with better battery stats.
What I found useful from the accubattery app is the permanent notification where it tells you, after a few seconds, how much mA will be drained in an hour of using the phone like the way you are using it at that moment. So I did a test. Had my phone on the home screen, doing nothing. After a few seconds the reading showed -180mA, which is awesome right? Then I locked my phone and left it at the always-on display for a minute or so. Unlocked it and the notification showed -980mA.
This is very VERY weird and I cannot find anything anywhere suggesting what anyone can do to combat this. I have more average battery drain when the screen is off than when the screen is on.
I have never reset my phone (and would like that to stay that way if possible) and the phone itself is a month old. It's really saddening to see other people are getting twice as much SoT.
Do you guys have any suggestions?
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I was on Miui 11 for a few weeks and had ~8h SOT with AOD enabled all the time. Now I am on Pixel Experience and I have ~7.5h SOT without AOD so I am very satisfied with the battery life.
I advise you to wait for Miui 12, which will come very soon to the Mi 9T. Then everything will probably change again with the battery life...