Database Users

I9100 in China - Comparison (FW, battery life, carriers, stats, etc.)

Hi there,
I got an SGS2 GT-I9100 recently and I am still trying to tweak it to suit my needs.
I'd like to ask the people living in China about their stats and configuration since it seems many issues are usually location/carrier related.
My biggest problem so far is battery drain. I have noticed that whenever wifi is on, my battery goes down by around 1% every 15 minutes or so with phone in standby. When wifi is off I can lose about 1-2% every hour.
I mean, after seeing lt_ler battery stats even with stock FW, having wifi on (night usage), I think there must be something wrong with my settings or phone.
BetterBatteryStats reports no important wakelocks. CPUSpy reads what it seem to be normal Deep Sleep time.
I think it might have something to do with the wifi router. Mine is the one from China Unicom (中国联通) ZXV10 H108B (v. 2.0.0 BJ).
My phone carrier is China Mobile（中国移动）.
I am using Frankenstein KK5 firmware with Siyah 2.4.2. I will be trying uninstalling different apps and then changing kernel, modem or whatever I can think of if it doesn't work.
I also get a high percentage of "Cell standby" battery use in the stock battery usage monitor, reporting "100% time without signal", although I have signal all the time at 4 bars and have no trouble making or receiving calls/sms. I think this wasn't happening before installing Siyah.
So please, people, share your thoughts, stats, settings and ideas. It'll be much appreciated. Also, if some better Chinese reader than me can find some thread/post somewhere about this on some Chinese website, like gfan, please let me know and I'll try and decipher it myself. I just can't find it...
PS: I'll try to add some screenshots later.

hi bro,
im leaving in Suzhou China area and using china mobile service also.
i dont encountered the problem as u describe above.
im running MIUI galnet ICS version with Siyah 2.5.1GT. baseband XXKI4.
on single charge (using extended 2000mah here), can last me up to 2.5-3 days using my previous roaming malaysian SIM card (no data). refer to picture.
using china mobile simcard, yield nearly similar result. again with data-off.
i dont use any special configuration js default conf from MIUI's rom.
have u tried different ROM?

Thanks, mate. I might give MIUI a try, since it is Chinese after all, I just wanted to stay close to stock for now.
Do you use wifi?

no prob !
yeah did use wifi in hotel. but only ON when wanna use. if not i turn it off.
at night also i turned it off.
yeah, u should give MIUI a shot. pretty nice and neat. since used it dont wanna use standard TW's rom anymore. hehe
but prepare to have few disadvantage as below:
1. degrade camera quality
2. no HDMI out, TV out not sure
3. some kernel might give unsmooth experience when watching 1080p video

I'm afraid the problem here has to do with wifi. Because as I said, when turned off at night I get a reasonable performance. But during the day, when it is on because I need to have mail pushed, the battery fades quickly...

I'm in Beijing and have no issues with battery life on China Mobile. I always keep the device on with data, gps, wifi etc. Most of my usage at the hotel is via wifi and when I'm out is on edge. Can generally get 25-30 hours on a single charge. I'm using stock KK5 with siyah kernel v2.4.2 with KL1 modem.

Should close wifi and background data.U can enable them once per 30 min or an hour.Continuous usage on wifi,especially background data can cause u great battery drainage.
For me,if i close wifi and background data,it only drops 1 or 2 percent an hour,but it drops drastically if they are on.Sometimes 20 percent in one hour.It's just a Galaxy S2 issue.Try to flash different roms and kernels to have better battery life.
I am currently in china using china mobile.

Battery drain on WiFi due to incoming packets

Hey everybody,
today I found the reason why my battery is dying so fast in the wireless network of my university and I'm wondering if there is something I can do.
So here the point: Charged my phone before going to sleep. Over night, I had a bettery drain of about 0.4%/hour beeing in my private WiFi (CM12 nightly, Matrix Kernel undervolted). Since alle other devices were off, not much was happening and the phone was in deep sleep for 97%. That's they it should be!
Went to work to the university where I am using the wireless lan, too. Since here are several thousand students, there is a lot network traffic going. Even per switch/router, there are about 50+ devices. Due to that, I got an incoming package count of about 33000 compared to 1000 outgoing packages within 4 hours (this can be seen in Options -> Battery -> Android OS)! Of course, my phone needs to check if the incoming package is indeed for my phone or not - which wakes the device up. So deep sleep went done to 60% within the same time and the battery drain increased to 6-7%/hour. So there is nothing about saving power beeing on wifi compared to beeing on 2G/3G/whatever.
Is there anything one can do to avoid this constant >> waking-up, checking package content, idling and going back to sleep much to late << ? Is there perhaps a way to tell the phone to collect a certain amount of packges before waking up and check them all at once? Are there any kernels that are intellegently programmed to do this? I really hate watching my battery burn at work without doing anything on the phone and having superior (for a N4) battery drain at home!
Glad about any advice or hint.

Really Bad Battery Life, S7 Edge Exynos Single

No Bluetooth, No Location - Yes WiFi, LTE 100% signal coverage, no downtime, overall low brightness around 25-40% I can't seem to get past a day of regular use with 2 hours and half average screen time. Using latest OTA.
I've turned off the always-on screen, several bloatware that came preinstalled, including Facebook and Whatsapp.
The first on the battery usage is always Android System followed by Cell Standby then Android OS (again???) and then Screen. Also the voice call seems to use some great amount of battery. Naming might be different since my Android is in another language.
Have turned on energy saving for most apps that runs on background. Doesn't help much since I don't have many apps that runs on background. Imagine if I did! My day ends with about 20~27% battery left, I just turned off fast charging to see if it helps anything. My Xperia Z3 with Whatsapp and a great deal of apps installed would end the day with over 50~65% with Stamina Mode. I know the screen is smaller but so is the battery.
So I thought it would get better with time but it didn't, it's the S7 Edge Exynos Single SIM, unbranded with the official Samsung rom so I could get the latest updates or I would be stuck with no updates at all since Frebuary, since my carrier usually only releases major OTAs such Android N and skips all the minor updates.
Yes I did a factory reset already hoping for the better, maybe I got a defective Galaxy S7? I'd hate to have my phone fixed and the battery changed, it wont be the same again unless they give me a new one which is unlikely.
Why is Android System and Android OS draining so much battery? Are there any tools to debug this and trace which processes are using CPU time? Or could this be due a faulty battery?

Settings, Applications, Google. Disable all the services that will cause wakelocks such as all security options. This is something 99% of folks overlook or forget. Post a screenshot of your battery stats
http://forum.xda-developers.com/showthread.php?t=1827676

Only settings marked above are "Allow remote lock and erase"
Here is an average day with:
**Few moments connected to my laptop transferring pictures from yesterday - so incidentally it took some charge on the way.
1 hour 29 minutes voice call, 3G/LTE signal is excelent, VoLTE not used, WiFi on occasionaly, Location off, Bluetooth off.
1 hour 12 minutes running Fallout Shelter with power saving on, 30 fps low resolution mode, that's the CPU time at least.
2hour 28 minutes screen time with very dim brightness​
Power saving ON all apps where available, I have absolutely nothing installed but a couple of games, Teamviewer and Microsoft Remote Desktop.
That left me with 49% battery. Not sure how great the results are considering the brightness was very low.
Since the image took the whole page, here are the links instead lol.
Screenshot1 | Screenshot2

Dont quote me on this but I believe the Android System drain issue is a byproduct of the latest Samsung firmware update...
Someone more in the know could correct me or elaborate more

null

There is a thread on battery life here
http://forum.xda-developers.com/s7-edge/how-to/post-battery-life-t3321547
you might find some help/answers in there
Regards
Sawdoctor

Just some heads up, in offline mode my phone went a full day with a 6% drop, half hour screen time and some minor gaming, when I turned the phone radio back on around 20:00 when it was 10:00AM it was down to 15% battery, solely on standby. No bluetooth No location - Yes Wireless Yes LTE

Phone Idle under Settings/Battery

What runs under "Phone Idle" on the V20. It's been the largest battery consumer for the last week of use that I've noticed. My wife's V20 is the same and I had my brother check his and his wife's V20.
I'm only asking because I'm not see great battery life like other have been reporting. I don't have live wallpaper, have only two widgets on the home screen. GPS is set to battery save, screen is set to auto but that doesn't even come close to chewing up the battery.
Sadly I feel like I'm still using my old 2.5 year G3 where it'll need a charge mid way through the day.

VDoubleUVR6 said:
What runs under "Phone Idle" on the V20. It's been the largest battery consumer for the last week of use that I've noticed. My wife's V20 is the same and I had my brother check his and his wife's V20.
I'm only asking because I'm not see great battery life like other have been reporting. I don't have live wallpaper, have only two widgets on the home screen. GPS is set to battery save, screen is set to auto but that doesn't even come close to chewing up the battery.
Sadly I feel like I'm still using my old 2.5 year G3 where it'll need a charge mid way through the day.
Click to expand...
Click to collapse
Factory reset it

czerdrill said:
Factory reset it
Click to expand...
Click to collapse
Really??
Pretty sad that needs to be done on a week old phone with minimal apps. I'm not even a heavy user.
I feel like I'm back on my old DroidX days where everything was a factory reset but never helped...

VDoubleUVR6 said:
Really??
Pretty sad that needs to be done on a week old phone with minimal apps. I'm not even a heavy user.
I feel like I'm back on my old DroidX days where everything was a factory reset but never helped...
Click to expand...
Click to collapse
I agree with you. Although my phone is just beyond a week old and does have all my apps installed, a factory reset can't be the solution here. This is the typical "I don't know how to fix this" answer always given by manufacturers and carriers.
Sent from my LG-H910 using Tapatalk

In the roughly 3 weeks I've had my V20 I've only seen this once where phone idle was higher than Screen. I started looking thru all running apps for 'keep awake' time being high and noticed Android OS had keep awake of over 2 hours when it's normally less than an hour after a full day use. I power cycled the phone and it stopped.
The weird thing was Android OS didn't show high battery usage even though something was triggering keep awake. Looks like the keep awake was causing phone idle to be high.
I'd look at everything in your battery usage to see if you have any high keep awake times.

VDoubleUVR6 said:
Really??
Pretty sad that needs to be done on a week old phone with minimal apps. I'm not even a heavy user.
I feel like I'm back on my old DroidX days where everything was a factory reset but never helped...
Click to expand...
Click to collapse
Sorry did not mean to be short in my response. When you set up your phone did you restore it from another phone using the nfc bump thing? I did the same and my phone battery was the same way. Wouldn't last even half a day. After i factory reset and set everything up manually i get 18+ hrs with 7 hrs screen on time sometimes.
If this situation doesn't apply to you then maybe a reset won't help. But you have to understand your situation isn't normal.

Make sure Google now features are all turned off and not running in the background.

tourbound129 said:
In the roughly 3 weeks I've had my V20 I've only seen this once where phone idle was higher than Screen. I started looking thru all running apps for 'keep awake' time being high and noticed Android OS had keep awake of over 2 hours when it's normally less than an hour after a full day use. I power cycled the phone and it stopped.
The weird thing was Android OS didn't show high battery usage even though something was triggering keep awake. Looks like the keep awake was causing phone idle to be high.
I'd look at everything in your battery usage to see if you have any high keep awake times.
Click to expand...
Click to collapse
I'll have to go through the apps one by one like I did previously on my G3 and see. Now within the battery stats there is only a handful of apps like hangout, play music, chrome and camera. The rest is OS related so that's why I was curious what ran under Phone Idle.
czerdrill said:
Sorry did not mean to be short in my response. When you set up your phone did you restore it from another phone using the nfc bump thing? I did the same and my phone battery was the same way. Wouldn't last even half a day. After i factory reset and set everything up manually i get 18+ hrs with 7 hrs screen on time sometimes.
If this situation doesn't apply to you then maybe a reset won't help. But you have to understand your situation isn't normal.
Click to expand...
Click to collapse
No and sadly I was looking for that feature a week ago but couldn't find it so I had to individually install most of my apps I had on my previous phone...made for a long night along with the additional emails and configuration or icons and such.
I'll keep digging away at the phone...I really want to like this phone ?

Has there been a definitive resolution to "phone idle" battery drain? I just got a V20 2 weeks ago on sale for $360 and its a fantastic upgrade over the One+1 I've been rockin all these years, but I'm also suffering from mediocre life due to whatever phone idle is. Some forums (for other phones) say phone idle is related to your wireless signal. I'm still with the same carrier and frequenting the same locations and had no such battery drain with that old One+.

i finally discovered whats was goin on with me..
i had the same issue..
phone idle was topping my battery usage list
it turns google plays have this "locationmanager service " and locationwhatever" that kills your battery over wifi even with location button off

Go to locations/ 3 dots in top right corner/ turn off WiFi scan. See if that helps.

My phone has been suffering from poor battery life for quite some time now, here are the screenshots, Android OS has been this high on almost all battery cycles.
I disabled wifi scanning as suggested above and will watch the performance, does the community have any other inputs to fix this? View attachment 4212978View attachment 4212979
Sent from my LG-H990 using Tapatalk

Phone idle is always the biggest battery draw on my phone too. I have minimal apps too. No Facebook or similar types of apps. I'm on a Verizon V20 stock with the latest security update. Is this normal V20 behavior to have phone idle consume more battery than everything else?

how about doze mode , isnt that meant to help with this sort of problem ? ( my phone is currently on a ship )

Any update. İ have the same problem

andreqf said:
i finally discovered whats was goin on with me..
i had the same issue..
phone idle was topping my battery usage list
it turns google plays have this "locationmanager service " and locationwhatever" that kills your battery over wifi even with location button off
Click to expand...
Click to collapse
So what did you do?

Would also be grateful if anyone shared a solution.
I specifically have a SIM-unlocked Sprint model (LS997) which am using in Europe with another carrier.
Using it in LTE preferred mode drains about 10-15% overnight.
Using it in WCDMA preferred mode drains up to 5% per night (yes, wifi and cellular data OFF and many apps greenified) . So I'm really interested in how this can be fixed and achieve 0% battery drain across several hours.
Or maybe it's SIM-unlocked Sprint ROM related?? I can't root my phone since it has the Feb 2017 patch and is a ZV6.
I suspect rooting it and using another ROM would solve this + the annoying issue of not being able to send images via FB Messenger and Viber while on cellular data (I imagine the Sprint guys placed some kind of restriction to deny media transfer for these apps when using cellular data).

I have noticed this too.. wondered why "phone idle" takes most battery... any suggestions would be great!

I am also curious about the solution. Phone Idle is at top. Even without SIM card. 30% drains during a night (everything is disabled, but no airplane mode is on). I tried factory reset, reinstall older ROM, replace battery, use no app but still sucks.

hi
my v20 phone battery draining was about 1% per hour before (about 7% totally ) and recently increased to 2% during sleeping time overnight. (draining 15% overnight in sleeping state)
it seems that during day either performance off battery is decreased.(about 5h with wifi and screen on usage)
Fast charging while second screen is On , is slower than when it is off therefore when second screen is Off , fast charging goes better . exactly , first 30 mins fast charging makes about 40% battery charge(instead of 50%) and after 60 min leads to 85% and full charging taking place after about 100 min instead of 80 mins.
another important thing is that sometimes shades have been seen on the LCD that many users have complained about it.
phone information is :
Android security patch level: September 1, 2017
BASEBAND : MPSS.TH.2.0.1.c3-00045-M8996FAAAANAZM-1
KERNEL : 3.18.31
BUILD NUMBER : NRD90M
SOFTWARE VERSION : V10g-AME-XX
MODEL NUMBER : LG-H990ds
my actions are as follows :
phone is factory reseted. No third party apps is installed. [especially social media apps.]
battery calibration steps for not rooted phones is taken place.(turning off the phone and charging several times repeatedly).
testing battery drain in safe mode in done and didn't change results
turn off location services and location scanning for WiFi and Bluetooth scanning
turn off WiFi being On during screen is Off.
turn off auto sync, NFC, GPS etc.
not using auto brightness.
not using comfort view .
turn off location services and location scanning for WiFi and Bluetooth scanning
second screen is off during test overnight. (either with second screen is ON with faced down to lower brightness in other day test )
phone is in Air Plane Mode and all data services is off.
system apps like Google services and Play and Assistance is limited by permissions.
following are some advanced battery drain overnight figures of my phone for more analyzing.
any help with this issue is appreciated.

Change of router affects battery?

Phone: Mi A1 Stock - Oreo 8.0 April update
I consistently charge the phone when battery level is around 30% to around 85%.
I recently changed ISP's and a new router was installed. It is a Huawei dual 2.4/5GHz fiber router that replaces an old Huawei single band fiber router and has 2 separate SSID's.
Since that change, my battery life has taken a significant hit and drains MUCH quicker than it used to. Where it would normally last 2-3 days, it now lasts about a day. Battery drain during screen off time is almost twice as fast as previously. For instance, I charged the phone to 90% Yesterday, less than 21 hours ago. Battery is now at 53% with only 21 minutes of SOT!
I've tried:
Staying connected to the 2.4GHz band
Staying connected to the 5GHz band
Turning off the Always On setting for WiFi that I have always had on
Nothing above seems to impact this situation in any way. If anyone has any ideas or solution for this, I would appreciate the help.
Regards,

Maybe the reason is a different transmit power and receiver sensitivity of the router. Maybe your new route requires a higher transmission energy than you old router.
In addition, some routers allow to use 2 channels in parallel, which would also mean higher energy consumption

I am assuming it is something like that. The signal strength is the same on both: full signal. The new router is considerably faster than the old one in throughput, even on the 2.4GHz band. But wow! Now I am thinking that the A2 needs a bigger battery! I really did not expect this type of hit from changing routers! Might be something for others to consider if they are planning a change.
Thanks for the response.

you updated the firmware on the router?

Duplicate post deleted

riccetto80 said:
you updated the firmware on the router?
Click to expand...
Click to collapse
As far as I can tell by Huawei's screwed up website, the router has the latest firmware. Huawei's website is NOT user friendly and it took me quite a while to even find the firmware area! REALLY bad design for a customer website!
But thanks for the suggestion. It did make me look it up, or at least try to.

@KB_Thailand: you could consider using some custom-firmware for your router.
Typically you would gain more options in configuring your router
Even with the standard firmware, you could play around with various options to find out which configuration and option suit you best

then try to change the wireless band, maybe other router automatically used a less crowded band, this new one not do this and you end up use a band who is used from many people who live too close to you.

Thanks to both @riccetto80 and @Tiemichael for the suggestions. I did look at the router setup and also looked at network diagnostics. The router appears to be set up okay.
Signal strength for the WiFi bands is between -45 and -50 dBm everywhere in the house, and noise is between -88 and -91 dBm.
Both bands are set to auto select, and both bands are using unused bands in the area, and are the 'best bands' according to the diagnostics.
There are only 3 other WiFi routers I can see from my house, and 1 of those belong to my Time Machine. The WiFi router is not using the same bands as any other WiFi.
Transmission strength is set to 100% on both bands.
When I went to bed last night, I had 41% battery. This morning, 7 hours later, I had 20%. The screen was off and the phone should have been in sleep mode, yet it drained 21% battery. The usage in Settings->Battery shows Launcher3 as eating a lot more power than might be expected for a phone in sleep mode. I have tried using ONLY 2.4GHz and then ONLY 5GHz, which made no difference in battery consumption.
I am at a complete loss as to what is going on.
Regards,

maybe is not about wifi! did you tryed a foce doze app like naptime and a app-sleep app like servicely?

It is definitely something to do with the change in ISP/router. I was out of town the last 2.5 days and the phone went back to acting as it normally did before, lasting over two days on the charge, even while switching WiFi networks often. The hotel had 6 networks in both bands, and depending where you were on the property, one of them would be much stronger than the others. No issues whatsoever with battery drain on either band. I came home about an hour ago, and the battery has already drained 6%. This is after only using 3% since 0600 this AM until I got home.
@riccetto80 No, I haven't tried the apps because it wasn't doing this before and the trip proved it is not something that went bump with the phone hardware. I just need to figure out what is going on with the new router, as I am almost positive it is the problem. I have a couple of other things to try over the weekend, so hopefully will arrive at some kind of understanding at what the problem is. If no resolution, I will try the apps and see if they make a difference.

I *THINK* I might have figured this out. It may be a two part problem. I went into settings and set the location to Battery Saver vs. High Accuracy, set the Security to turn off the settings to not lock the phone for my home location and on my body, and went into the router and set the Beacon Period to 200 from 100. I tried 1000 and DTIM of 2, and 500 and a DTIM of 1, but that made the internet connection quite laggy, so backed it off to 200 and 1 on DTIM. (100 and 1 is default) These changes SEEM to have slowed the battery drain down considerably., only losing a few percent points in the 4 hours since the changes vs. 6% in an hour. It's funny because these settings were still active when I went out of town, so it may have something to do with the keep unlocked for the home location and the new router.
I'll report back if these don't fix the problem.

Follow up post:
The issue is some sort of conflict between the router and the Stay Unlocked at this Location setting. I went back into the router and set the Beacon back to 100, the default setting, but left the Stay Unlocked Setting off and the High Accuracy Location setting set to Battery Saving. The phone is now acting like it did previously, so I consider the problem solved. Where before it was using 6% in an hour, I have only used 5% in 6 hours with these settings.
So, if you are experiencing battery drain issues, one thing you might wish to try is to set Location to Battery Saving (middle selection) and make sure the Stay Unlocked settings are off. It is really no more of a pain to hit the fingerprint reader than to hit the power button to turn on the screen.
I hope this helps someone.