[Q] charging issue - Galaxy S III Q&A, Help & Troubleshooting

Hello,
recently after getting my phone back from repair the device will either charge very slowly or doesnt charge at all
usually reconnecting the charger back solves the problem.
i have seen in the forum many people complaining about this issue but i have never seen a real answer for this..
i did rule out the possibility that the charger is flawed, the charger is fine i even baught a new one and tried multiple others.
so it must be either the phone hardware or.. maybe software?.. in case its software i did try reformating the device
but that didnt help at all.
my question is, would reflashing the rom be a possible solution?. i never did flash the rom its the stock one from the day i got it
and it has neevr been reflashed or anything just reformat.
i have no interest in custom roms unless its necesery.
thankyou

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shahaf321 said:
Hello,
recently after getting my phone back from repair the device will either charge very slowly or doesnt charge at all
usually reconnecting the charger back solves the problem.
i have seen in the forum many people complaining about this issue but i have never seen a real answer for this..
i did rule out the possibility that the charger is flawed, the charger is fine i even baught a new one and tried multiple others.
so it must be either the phone hardware or.. maybe software?.. in case its software i did try reformating the device
but that didnt help at all.
my question is, would reflashing the rom be a possible solution?. i never did flash the rom its the stock one from the day i got it
and it has neevr been reflashed or anything just reformat.
i have no interest in custom roms unless its necesery.
thankyou
Click to expand...
Click to collapse
Did you tried another Charger or charge it on the pc?

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_Beni_ said:
Did you tried another Charger or charge it on the pc?
Click to expand...
Click to collapse
He alr said he changed the charger. Also, charging on a pc will definitely be slower as the voltage is lower.
Sent from my GT-I9300 using xda app-developers app

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Same problem both pc and charger

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shahaf321 said:
Same problem both pc and charger
Click to expand...
Click to collapse
Return to the repairer .
Doubt if flash stock will help but worth a try as you don't know what the repair has broken .

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Well there are two features added on all galaxy roms i guess, one which detects unstable power and decreases the charge rate to a point which makes it stable and the safety margin which does something similar i can't really remember however if you want the normal charging rate it is a necessity that you flash a custom kernel the only one i know of which has a feature of disabling these two options is boeffla's kernel and even increase the charging rate
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kariiim said:
Well there are two features added on all galaxy roms i guess, one which detects unstable power and decreases the charge rate to a point which makes it stable and the safety margin which does something similar i can't really remember however if you want the normal charging rate it is a necessity that you flash a custom kernel the only one i know of which has a feature of disabling these two options is boeffla's kernel and even increase the charging rate
Sent from my GT-I9300 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Why would Samsung have unstable power on their stock charger? Think abt tat. Whr did u get tat information?
Sent from my GT-I9300 using xda app-developers app

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kariiim said:
Well there are two features added on all galaxy roms i guess, one which detects unstable power and decreases the charge rate to a point which makes it stable and the safety margin which does something similar i can't really remember however if you want the normal charging rate it is a necessity that you flash a custom kernel the only one i know of which has a feature of disabling these two options is boeffla's kernel and even increase the charging rate
Sent from my GT-I9300 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
alright i will try reflashing my stock rom first , if that doesnt help i will try your way.
will report back

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JellyYogurt said:
Why would Samsung have unstable power on their stock charger? Think abt tat. Whr did u get tat information?
Click to expand...
Click to collapse
I didn't say the charger was faulty i said that unstable power was supplied to the charger which led to unstable power provided by the charger
Take a look at the screenshot attached
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kariiim said:
I didn't say the charger was faulty i said that unstable power was supplied to the charger which led to unstable power provided by the charger
Take a look at the screenshot attached
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Click to collapse
Wow didn't know abt this.
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JellyYogurt said:
Wow didn't know abt this.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Changing the kernel will give you a whole lot of new options too you should try it
Sent from my GT-I9300 using XDA Premium 4 mobile app

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well, i've tried it during the whole day and i plugged/unplugged the charger many times
it worked fine (thats after reflashing the stock rom 4.3), after that i did notice one time it was plugged for about 20 mins and no change of battery precentage. so that got me worried..
i download "galaxy charging current" to see the values of the charging and it said
max: 600
now:999
avg:600
now im just trying 2 get suspocious maybe its the charger after all it seem maybe alittle deffected even tho its new..
kariiim said:
Changing the kernel will give you a whole lot of new options too you should try it
Sent from my GT-I9300 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
and i'd rather not touch the kernel or anything about the rom unless i definetly have to...
it does seem to be working alot better after reflashing my rom
so im gonna go ahead and try a diffrent charger again

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kariiim said:
Changing the kernel will give you a whole lot of new options too you should try it
Sent from my GT-I9300 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
alright so i have decided to turn into putting a new kernel just as u suggusted "boeffla's " sounds good
now i have not been dealing with these things for a while so..
just tell me can i just flash it on my phone as it is right now? (on 4.3 stock rom )
and also do i need 2 wipe before that
and lastly if u could link me that would be great
i could not find a verision for android 4.3
and.. i need to root my phone too.. im starting to get real tired of this
lots of effort for such small problem..

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shahaf321 said:
just tell me can i just flash it on my phone as it is right now? (on 4.3 stock rom )
and also do i need 2 wipe before that
and lastly if u could link me that would be great
Click to expand...
Click to collapse
Yes you can flash it on the 4.3 rom
Wiping dalvic cache and cache should be good enough
And here's the link
http://boeffla.df-kunde.de/sgs3/boeffla-kernel/Test_jb43/
You should also follow his thread for future updates
http://forum.xda-developers.com/showthread.php?t=1964572
And read through the kernel options and what they do here :
http://boeffla-kernel.de/index.php/kernel-settings
You can also pm me if you need any help with those kernel options
shahaf321 said:
and.. i need to root my phone too.. im starting to get real tired of this
lots of effort for such small problem..
Click to expand...
Click to collapse
No you don't need to be rooted to flash the kernel feel free to pm me for any further assistance.

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I had this problem with my S3 using the stock charger. Sometimes it switched back to USB charging mode which was slow and sometimes couldn't even keep up while gaming. I fixed it by buying an other generic usb charger (try a cheap bulky one).

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ackzsel said:
I had this problem with my S3 using the stock charger. Sometimes it switched back to USB charging mode which was slow and sometimes couldn't even keep up while gaming. I fixed it by buying an other generic usb charger (try a cheap bulky one).
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Click to collapse
thanks! appearntly the charger i purchased from the same store arent genuine so that might be it..
i tried a couple of friend's genuine chargers and it worked great..
im gonna purchase one like that somewhere.. maybe ill find on ebay
and test it for few weeks see if it works fine
so i guess in conclusion this mobile is very sensitive toward non-genuine chargers..
but wat did u mean by "generic usb charger" exactly..?
like the ones that r ac to usb adapters and i just connect the usb cable?

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shahaf321 said:
thanks! appearntly the charger i purchased from the same store arent genuine so that might be it..
i tried a couple of friend's genuine chargers and it worked great..
im gonna purchase one like that somewhere.. maybe ill find on ebay
and test it for few weeks see if it works fine
so i guess in conclusion this mobile is very sensitive toward non-genuine chargers..
but wat did u mean by "generic usb charger" exactly..?
like the ones that r ac to usb adapters and i just connect the usb cable?
Click to expand...
Click to collapse
Maybe generic is not the right word. English is not my native language : ) What I mean is just a regular all-purpose (not necessarily branded) power supply with a USB port. Look for the maximum current output. That should match or (preferably) exceed 500 mA. Don't look for a iPhone compatible charger. These look tempting with their 2.1 A current rating but your S3 could fail to recognize the potential of the power supply and switch back to USB charging mode. Android phones recognize an AC power supply by their data lines being electrically shorted. With iPhones that's a bit different if I recall correctly.
I partly agree with your conclusion. I do think the S3 is very picky with power supplies, but I don't think a genuine charger is a guaranteed success. As stated in my previous post, my phone charges at maximum current with an unbranded charger which I bought after my original Samsung charger (the one that came with the phone) failed to achieve the same.

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alright so i finaly purchased a genuine charger for sure..
appearntly the chargers i bought from the other store were not..
and i have used it for about 2 weeks now and it works amazing.. always shows 800 on charging
so in conclusion any1 have this kind of problem.. make sure the charger rly is geuine.. there r so many fakes out there..