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Hey all, so I have a different theory on the GNex battery issue but I'm not sure how to test it. It also might explain why there has been such a discrepancy in people's battery stats.
My theory is that there is something wrong with the way ICS/GNex is charging/reading/identifying battery information. Here are a few of the reasons why I think this is the case.
1 - My phone will occasionally charge absurdly fast, like 20 percent in 10 minutes... but then it will die equally as quick. My first thought was that the phone just charges and discharges quickly... BUT
2 - After charging for, say an hour, when I do a battery pull and let it sit for a minute or two before putting it back all of a sudden my super quick battery charge to 62% is now only at 37% (actual numbers that happened to me tonight). So why did I do a battery pull...?
3 - Because I noticed that after 10 minutes my phone had gone from 62% to 56% and I thought that was absurd. Once I did the pull and was back to my (as I like to call it) normalized battery percentage I have only dropped 15% in 2 hours and that includes heavy data usage on maps, navigation and texting. And another strange thing
4 - I have actually seen it go the other way! I once was around 30%, rebooted the phone and it jumped to 50%. Now that I'm thinking about it I often see weird fluctuations in my battery reading. One minute it will be 28%, then I turn it off and turn it back on and it will be 29%. Oh... and for those of you wondering
5 - This has happened both on a stock rom, rooted stock (although not like that would make a diff) and a custom rom ARHD. But still there is one last question...
6 - Why is there so much disparity on the issue? My theory is because this battery madness is so unpredictable you, you don't know when you get a normalized charge or an inflated charge. And lastly...
7 - I think it's gotta be a SW issue, why else would Nexus S owners be seeing the issue as well? (So that's good news... hopefully).
Soooo, that's my little rant. I think part of the problem is people are getting distracted by all these other theories with kernel drivers and etc because of the absurdly high Android OS issue (although in all fairness my theory could be more misdirection).
So why post? Well if people could try their luck validating/disproving my theory I would really appreciate it!
Here's what I'd like (and what I am going to do).
Charge your battery for an hour, if it charges really fast note the percentage.
Optional: Play with the phone for a while and see if it discharges quickly.
Do a battery pull, let it sit for a sec and put it back in and note the percentage.
If the percentage is significantly lower (10+%) start using the phone now and note the time to discharge.
Thanks!
EDIT: Also a good thing to mention, I am not disagreeing about the Android OS bug - I think that's also very real and something I have experienced as well. BUT if you look at the other battery thread you'll see a lot of people posting battery success images with high Android OS utilization. I think it could be an indication of multiple issues contributing to a negative experience.
Oh and I submitted a bug report to Google.
http://code.google.com/p/android/issues/detail?id=23311
I've also noticed crazy battery drop after reboots or pulling battery. Easily drops 10%+ at times. Reminds me of my great blackberries back in the day
Sent from my Galaxy Nexus using xda premium
all good here. i'm very pleased with the battery life.
while there may be issues with the stats, the wake times are real for some users - as well as the heat generated (indicating the cpu is working) when the phone should be sleeping.
There is no question there are either bugs in ICS that cause wake locks to get stuck, or badly written apps that keep it awake that didn't keep awake froyo/gingerbread.
Agreed on the wake lock. In fact I really should have quantified that in my original post - I too have that ridiculous Android OS utilization.
I updated my post - you make a good point.
Charged to about 21%. Pulled battery and rebooted and reported about 31%. Running ARHD.
EDIT: Pulled battery again and rebooted and reports 20%.
I realized mine was charging extremely slow so I decided to turn it off and let it charge faster. It was only at 48% when I turned it off but as soon as the battery indicator showed up with the phone off it appeared to be well over halfway charged, I would've guessed close to 75% but I didn't think to turn it back on and see..
edit: I did charge it fully with the phone off then wiped battery stats in cwm before rebooting into the OS after this. Since then it seems to be charging normally and reporting the correct battery level
To prove this theory, I think you should check the reported voltage of the battery and compare that to the percentage meter. Most battery apps/widgets use the old Android "battery info" screen to report this data. There very well may be a problem with the GN/ICS meter, but to be sure there has to be some constant to go back to.
These batteries drop like a rock from full charge to something like 87-88%, and again from around 37-38% to zero. It's just the battery technology, perhaps exacerbated by not having enough battery stats to adjust the % meter.
As far as I know, an app/widget that reports battery voltage will do so from the information being provided by the battery circuitry itself, so it's not subjective or adjusted in any way like a meter will be, making it a far better correlation point for the discussion.
djp952 said:
To prove this theory, I think you should check the reported voltage of the battery and compare that to the percentage meter. Most battery apps/widgets use the old Android "battery info" screen to report this data. There very well may be a problem with the GN/ICS meter, but to be sure there has to be some constant to go back to.
These batteries drop like a rock from full charge to something like 87-88%, and again from around 37-38% to zero. It's just the battery technology, perhaps exacerbated by not having enough battery stats to adjust the % meter.
As far as I know, an app/widget that reports battery voltage will do so from the information being provided by the battery circuitry itself, so it's not subjective or adjusted in any way like a meter will be, making it a far better correlation point for the discussion.
Click to expand...
Click to collapse
I use current widget to tell me my voltage, as I don't pay attention to the meter. On a stock LTE battery, you should cap out at 4.203V
Voltage meter sounds like a reasonable way to approach the problem. I'm definitely not an expert on battery stats though - what should the voltages read? I know it caps at 4200mv, but what is the min?
Also how does mv relate to mah?
m0sim said:
Voltage meter sounds like a reasonable way to approach the problem. I'm definitely not an expert on battery stats though - what should the voltages read? I know it caps at 4200mv, but what is the min?
Also how does mv relate to mah?
Click to expand...
Click to collapse
mv stands for millivolt which is a measurement of voltage. Examples you may have heard before are 9v battery, 110 volt wall outlet.
1mv = 1/1000 volt OR 1v = 1000mv, so you can see a mv is very small compared to a volt.
mAh stands for milliampere-hour and, in layman's terms, is a measurement of battery capacity, specifically how many hours a battery will last if the device it is connected to pulls a known amperage.
So, if a device pulls 500mA and the battery is rated 2000mAh, then generally the battery will last 4 hours (2000mAh/500mA). There are numerous other factors in the equation such as temperature, age of battery, etc. that can affect the battery life.
Hi, sry for my english=(
When i charge my battery its normally charge to 80% and then becomes 100%.
Try calibrate battery but this doesnt help. Also try another roms and kernels.
Is it a battery issue?
U can buy new battery from DEALEXTREME.com
so its the only way?
Try this.
Charge battery to full. Leave plugged in, Turn off fastboot in power settings and shut phone off. Light will turn orange again and let it charge til green. Boot into recovery and wipe battery stats. After this let the battery drain as low as 10% before recharging to full without unplugging. Do this a few times over a few days. If you don't get more accurate percentages after this then the battery could be messed up.
Gizmoe said:
Try this.
Charge battery to full. Leave plugged in, Turn off fastboot in power settings and shut phone off. Light will turn orange again and let it charge til green. Boot into recovery and wipe battery stats. After this let the battery drain as low as 10% before recharging to full without unplugging. Do this a few times over a few days. If you don't get more accurate percentages after this then the battery could be messed up.
Click to expand...
Click to collapse
thx i will try.
i have the exact same issue. i have done battery stat wipe..flashed multiple roms over and over with full wipe and all that. battery charges up to 80% then the LED turns green..and stays that way till it reaches 100%. it jumps from 80% to 100% in just a few minutes.
battery jump
I wouldn't worry Lendlord mine does the same (see attached pic) you can see the green line jumps up from 80 to 100 but doesn't jump down from 100 to 80 under use. The picture is taken from Battery monitor widget, it's a great app which shows mv, ma, % and temp and even keeps a text log of what ma drain there has been allowing you to monitor battery drain while you're using your phone or while it is sleeping.
Here's a great guide aswell of how to ensure best battery life by memnoc:
forum.xda-developers.com/showthread.php?t=1226016
so thats mean that some battaries have the same issue=( And there is no solution for it...
HTC failed again...
first GPS and now the battery. Bad, very bad!
And one more request.
Can someone post your current widget log?
LendLord said:
so thats mean that some battaries have the same issue=( And there is no solution for it...
HTC failed again...
first GPS and now the battery. Bad, very bad!
And one more request.
Can someone post your current widget log?
Click to expand...
Click to collapse
I have the same thing happen to mine, i think its because you've let your DHD die due to low battery levels and that damages the battery which i think causes this problem
..letting the phone shut off because of a completely discharged battery is NOT good for the lifetime of Li-ION batteries.
The battery could be hurt and the amount of mAh the battery is able to store might be lower after.
Also trying to 'pump' the battery to fully charge by connecting / disconnecting while the phone is down is not a good advice because li-ion batteries also don't like overcharging.
To be sure that the battery is fully charged due to its ability it is sufficient to let the phone be conectet to charger or usb overnight.
Android uses the voltage of the battery to estimate (!) the % charge value.
Android supposes the battery is fully charged when it enters the voltage of about 4.2 Volt which is the charging cut-off voltage for li-ion cells.
Now when charging again the conceded voltage is reached more quickly than estimated by android, so the system is 'surprised' of this rapid charge and changes the % value to 100% because the conceded voltage is reached more quicklyy as supposed.
(Try to fill a 0.5ltr beer bottle into a 0.33 glass)
This is the normal of aging for li-ion batteries.
Consider for yourself if it's acceptable for you or if you should by a new battery.
by the way... be careful with cheap china batteries for 10$.
Offers with exaggerated values (up to 1600mAh) will mostly keep their promises
only for the first two or three charges only and will than fall back to 800 mAh or even less !
Greetz
Pudel
Yeah...
My battery started to do the same thing for a week or two. It will charge to 86% then it jumps to 100%, saying it's charged.
This is normal afaik, nothing to worry about.
Sent from my Desire HD using xda premium
solve
actually，it's the problem of your rom , in the framwork.apk . unzip it you will get a lot of battery icon form 1%to 100% in the res file ，if it made mistake，that 'your problem. you can go to uot kitchen to coustom it again.
Nope!
I've solved my problem. I've bought a new (original) htc battery, and the new one works great. I haven't reflashed the rom, or made any new modification. Just added the new battery.
So, yes, it's a faulty battery.
LendLord said:
Hi, sry for my english=(
When i charge my battery its normally charge to 80% and then becomes 100%.
Try calibrate battery but this doesnt help. Also try another roms and kernels.
Is it a battery issue?
Click to expand...
Click to collapse
Download Current widget from market and charge ur phone then wait for the 0 ma then download the battery calibration app from market too and calibrate and unplug ur phone, u can aslo reboot to recovery and wipe battery stats hope it helped you
Hello everyone for the last 3 days this battery calibration has been eating me up with milions of questions so i got perfect idea of what it is and why its important and why my battery needs to be calibrated . till today that i installed an app calls widget battery pro that can monitor your battery behavior and all and as i was watching my battery charging to full i notcied something in my opinions not right , which was the max mv cap my battery got as it hits 100% , my device is a galaxy tab s T705 with a 4900ma battery and here in this screenshot " http://cubeupload.com/im/1HP4in.png " you can see the max mv it got to was around 4324mv is that the battery mv ? or the mv thats going into the battery while charing it , i mean if thats from battery then my battery did not hit it max cap before hitting 100% charge which is when the charger adaptor stoped charging the battery . yes im using the oroginal charger and cable and everything and my battery doesnt show any funny behavior at all during usage i just wana know if thats what i think it is and i need to calibrate it or not to hit it max mv thanks everyone
Mv is milivolts and mah is milliamphere. they're different. Youalready hit your max mv at 4324. Anything higher will make your battery bloat or worst. Explode.
Try using battery monitor widget, you'll see the exact mv and mah values while charging. It will show you that once the mah reach 4900, your charger will cut off and your phone will notify you to disconnect it
hey mate ty for your respond I however got that all sorted out >< it was all my bad I can now easily hit 8hrs screen time with a full charge and that tells me my battery is more than okay and yes now i understand the difference between mv and ma thanks a lot years I do use a battery monitoring widget and when my device is fully charged it stops at 4900 thanks for everything it was all a misunderstanding cheers
Sent from my SM-T705 using Tapatalk
Hi.
I recommend the free version of GSam Battery Monitor, enable the alarms in the settings, this is the best monitor i have see, and i have tried them all.
It save my 10.5" from damage or worse as the battery temp alarm went off during the night when i was sleeping, some misbehaving app, when it was in it`s case supposedly sleeping.
https://play.google.com/store/apps/details?id=com.gsamlabs.bbm&hl=en_GB
John.
I reported already on the official asus forum regarding this issue, but I want to read people's suggestions here.
There is a missing capacity around 200+ or 200mAh + where it says battery is fully charge @ 100%.
The uploaded images as you can view, is from zenfone 5 and zenfone 2 screen shots, where in 100% fully charge of zenfone 5 capacity is accurate, while on zenfone 2 there is missing capacity.
See attached images.
you may check yours, no need root.
Using ASUS File manager, navigate to root of internal storage, (must uncheck "Hide system files" first on the 3 dot menu) then navigate to sys/class/power_supply/battery/uevent, you may view the file by opening it with HTML viewer.
Many or majority had this bug.
Any explanations here or comments?
This could be the very reason why battery drops fast from 100% to 90%.
This might also be linked to my problem- my phone dies when it gets to 25-39% battery.
Is this file editable?
Yes it is, do a full charge and view your battery capacity.
Now my phone goes from 100 to 0% in 40 minutes. At least it reaches 0%... battery behaviour is erratic
Hello
My firmware version is 2.19.40.22 WW, which I updated from asus website.
Earlier phone was working fine, but after update battery charges from 80% to 100% in just 2-3 minutes & discharges till 70% very quickly. I didnt note the earlier version of the device.
Please anyone guide me which is the best firmware version for ZE551ML, 4gb/32gb version.
Thanks.
Latest firmware version 2.20.40.59 also has the same issue .
How to fix this issue???
Anyone???
$umit
Not only 200...but im losing 300 ...
Mine seems to operate normally but shuts down at 40%
Try to check your capacity.. Still this is not fixed but was reported earlier.
Can battery calibration have anything to do with this? I just checked mine and its at 3000. (That's the correct value, right?)
I do remember "calibrating" the battery when I first bought it. The battery was flaky when I was using it for the first time (phone died on me at 32%), but after some calibration using apps and some specific steps, my battery is better than ever.
EDIT: Okay I take that back. I checked again and it's 2700 mah at 100%, shame. If there's a way to fix this, it would be awesome. This seems to be a miscalibration as the capacity shows 3000 mah. Or is that 200 mah a reserve or a buffer so you would not totally drain the battery?
EDIT 2: Tested this out some. Seems to be a hit or miss. Check my answer below.
Oh I just checked it and more than 1000 is missing :|
POWER_SUPPLY_NAME=battery
POWER_SUPPLY_STATUS=Full
POWER_SUPPLY_HEALTH=Good
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Li-poly
POWER_SUPPLY_VOLTAGE_NOW=4376000
POWER_SUPPLY_CURRENT_NOW=72000
POWER_SUPPLY_ENERGY_NOW=0
POWER_SUPPLY_CAPACITY=100
POWER_SUPPLY_CAPACITY_LEVEL=Full
POWER_SUPPLY_TEMP=392
POWER_SUPPLY_MANUFACTURER=(null)
POWER_SUPPLY_MODEL_NAME=(null)
POWER_SUPPLY_SERIAL_NUMBER=(null)
POWER_SUPPLY_CURRENT_AVG=76000
POWER_SUPPLY_CHARGE_FULL=3000
POWER_SUPPLY_CHARGE_NOW=1334
Click to expand...
Click to collapse
Mine worse
POWER_SUPPLY_NAME=battery
POWER_SUPPLY_STATUS=Not charging
POWER_SUPPLY_HEALTH=Good
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Li-poly
POWER_SUPPLY_VOLTAGE_NOW=3793000
POWER_SUPPLY_CURRENT_NOW=-353000
POWER_SUPPLY_ENERGY_NOW=0
POWER_SUPPLY_CAPACITY=44
POWER_SUPPLY_CAPACITY_LEVEL=Normal
POWER_SUPPLY_TEMP=391
POWER_SUPPLY_MANUFACTURER=(null)
POWER_SUPPLY_MODEL_NAME=(null)
POWER_SUPPLY_SERIAL_NUMBER=(null)
POWER_SUPPLY_CURRENT_AVG=-492000
POWER_SUPPLY_CHARGE_FULL=3000
POWER_SUPPLY_CHARGE_NOW=1254
You're battery is not at 100%, you're at 44%, so of course it's going to be low. Charge to 100% then repost your results.
Any solution yet?
I am loosing 301mAh. I already calibrated it, but problem still exist. Is there any solution yet?
After reading about jump charging, battery calibration etc. I decided to do some "test". I plugged my phone after consuming only 2% of battery and charged back to 100%.
And it seems that the POWER_SUPPLY_CHARGE_NOW value changes everytime you charge your battery to 100%. I don't know why this happens or what this means. I do know that you can "increase" that value by doing what I just did (charging to 100%, let it sit idle until it's at 95% or so, then charge back to 100%).
EDIT: POWER_SUPPLY_CHARGE_NOW value seems to change each time you charge your battery, regardless if you charge it to 100% or not. Check my comment below.
Will the battery charge till 3000 by this method?
Every time it needs to be done or this can be done once and than calibrate the battery?
It seems that the value of POWER_SUPPLY_CHARGE_NOW changes, not only when you charge to 100%, but each time you plug your phone. Mine just got off from charging at 91%, and I computed what would be the 100% value of POWER_SUPPLY_CHARGE_NOW and it's 2819. I've had different values each time: 2700, 2701, 2644, 2688 and now 2819.
I'm skimming through articles and posts about this and there seems to be a bug about x86 processors reporting battery status? I'm not sure about the whole technical stuff, so hopefully someone who understands this would chime in.
Oh you guys gonna love this
POWER_SUPPLY_NAME=battery
POWER_SUPPLY_STATUS=Not charging
POWER_SUPPLY_HEALTH=Good
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Li-poly
POWER_SUPPLY_VOLTAGE_NOW=4338000
POWER_SUPPLY_CURRENT_NOW=-286000
POWER_SUPPLY_ENERGY_NOW=0
POWER_SUPPLY_CAPACITY=100
POWER_SUPPLY_CAPACITY_LEVEL=Full
POWER_SUPPLY_TEMP=391
POWER_SUPPLY_MANUFACTURER=(null)
POWER_SUPPLY_MODEL_NAME=(null)
POWER_SUPPLY_SERIAL_NUMBER=(null)
POWER_SUPPLY_CURRENT_AVG=-224000
POWER_SUPPLY_CHARGE_FULL=3000
POWER_SUPPLY_CHARGE_NOW=4857
After 2 minutes
POWER_SUPPLY_NAME=battery
POWER_SUPPLY_STATUS=Not charging
POWER_SUPPLY_HEALTH=Good
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Li-poly
POWER_SUPPLY_VOLTAGE_NOW=4275000
POWER_SUPPLY_CURRENT_NOW=-426000
POWER_SUPPLY_ENERGY_NOW=0
POWER_SUPPLY_CAPACITY=95
POWER_SUPPLY_CAPACITY_LEVEL=High
POWER_SUPPLY_TEMP=383
POWER_SUPPLY_MANUFACTURER=(null)
POWER_SUPPLY_MODEL_NAME=(null)
POWER_SUPPLY_SERIAL_NUMBER=(null)
POWER_SUPPLY_CURRENT_AVG=-409000
POWER_SUPPLY_CHARGE_FULL=3000
POWER_SUPPLY_CHARGE_NOW=4732
Haha wow, so your ZF2 somehow managed to go super saiyan!
Maybe that's it? Maybe all this does not mean anything at all?
I've never had any battery problems with the ZF2 so far. I charge by 15%, take it off charging at around 96%. I make it a practice to leave a charge higher than 30% when I will let it sit idle overnight (luckily, quickcharge makes this easy). And with that I've always been satisfied with the battery life.
Hi All,
I had the same issue with my phone where I'm losing around 1200+.
I charged my phone using my Nexus 7's charger and it somehow resolved the issue. I charge it from 40% to full and it now shows 2900+.
It might be with the excessive used of quick charging.
My H815 had started reporting strange battery stats. I took it off charge an hour ago, but the battery stats (in Settings) say that the "Usage on battery" is 23 hours. The battery has also started charging more slowly, and discharging more quickly, recently. Does all of this suggest that the battery needs to be replaced?
Not necessarily. I would try a battery calibration and maybe even a factory reset because
itm said:
.. The battery has also started charging more slowly,..
Click to expand...
Click to collapse
doesn't fit. Usually batteries on their way to dying discharge *and charge* faster.
Also the report that it's on charger while not, may indicate a software or even hardware problem.
How old?
About 1 year old. I've noticed that it is drawing a lower charging current when connected to the Quick Charge charger (less than 500mA). It used to draw 1000mA+. Also, my car charger no longer keeps it charged when Google Maps is running - i.e. the phone discharges more quickly than the charger charges it.
What's the best way of re-calibrating the battery?
Run it totally empty doing something intensive. When the phone shuts down, wait some time, then power it on again and try to use every last drop of energy. Maybe do this one more time. Just make sure there's nothing left.
(That's the manual way of discharging. There are also apps available that will turn everything on and discharge your battery very fast. But some say they are bad for the battery.)
Then charge to 100% preferably with the phone powered off.
EPa said:
Run it totally empty doing something intensive. When the phone shuts down, wait some time, then power it on again and try to use every last drop of energy. Maybe do this one more time. Just make sure there's nothing left.
(That's the manual way of discharging. There are also apps available that will turn everything on and discharge your battery very fast. But some say they are bad for the battery.)
Then charge to 100% preferably with the phone powered off.
Click to expand...
Click to collapse
You shouldn't do that!
www.batteryuniversity.com
Ciccius-IT said:
You shouldn't do that!
Click to expand...
Click to collapse
We're talking battery calibration here, not everyday practice. Instead of playing smart by providing vague links, be smart by actually reading.
If you want to learn more check http://batteryuniversity.com/learn/article/battery_calibration and many other..
EPa said:
We're talking battery calibration here, not everyday practice. Instead of playing smart by providing vague links, be smart by actually reading.
If you want to learn more check http://batteryuniversity.com/learn/article/battery_calibration and many other..
Click to expand...
Click to collapse
Thanks. So discharging it to the "Low Battery" warning (15%) then recharging to 100% is the correct thing to do?
Well I would say not everything is fixed and absolute.
For example, you also shouldn't charge to 100%.
But, battery and chip manufacturers incorporate this into their designs, so 0% and 100% are not really that, in order to protect the battery, and give the people an easy life. For example, instead of suggesting everyone to remember and stop charging at around 90%, they make the chips report 100% when they're about 90%. The same is also true for 0%.
I would say discharge fully. The low battery warning is a warning for you to not be left without energy when you might need it, not to protect the battery. The internal chips handle that. 0% is not really 0%.
Edit: in the link I provided in my previous post, check figure 3. Among others, you can see in the data provided by a battery "Absolute state of charge" and "Relative state of charge". That's what I'm talking about. We users see the (protective) relative state of charge, not the absolute.
EPa said:
We're talking battery calibration here, not everyday practice. Instead of playing smart by providing vague links, be smart by actually reading.
If you want to learn more check http://batteryuniversity.com/learn/article/battery_calibration and many other..
Click to expand...
Click to collapse
It's difficult for me to write all in English, sorry. Don't wanna to be vague, linked that site only because I know and read it and I like very much what they say.
I think to discharge battery to the lowest possible isn't a good work, even with the relative % indication. For a simple calibration of a li-ion battery I think it's ok to discharge till phone power off then recharge full. Calibration has nothing to do with battery cycle, it's only software problem. The phone has to calibrate % on true capacity of a wear battery.
Discharge, power on, discharge again, power on, discharge even the last drop of energy isn't a good practice in my honest opinion.
Inviato dal mio LG-H815 utilizzando Tapatalk
Ciccius-IT said:
For a simple calibration of a li-ion battery I think it's ok to discharge till phone power off then recharge full.
Click to expand...
Click to collapse
So we agree. Because we are talking about calibration here.
Every day usage is a totally different story. A li-ion battery should not be left to go below ~40%. Also, slow charging is better than fast (you can imagine what this means in relation to Quick Charge and related technologies. Don't use them if you have the time)
But the question was about calibrating.
Yes, we agree, but before you're talking about discharging every single drop of energy from battery to calibrating it. It's that what I mention not to do, it's a bad practice for li-ion battery, even with security chip, and all that for a simple calibration issue. Just my two cents ✌?
Inviato dal mio LG-H815 utilizzando Tapatalk