Develop Bugs

Charging via USB on computer

My device charges very slowly if the display is off. If the display is on it does not charge at all.
I've installed the Samsung drivers from the website. Is anyone else able to charge their device via USB? I need to know if I should exchange mine.
Sent from my SGH-T989 using XDA App

I was able to charge my sgs2 yesterday at work through the usb port. It might be the phone, or maybe the usb port you are trying to use doesn't have enough juice to charge the phone? have you tried another usb port on the computer?

usb will always charge really slow compared to an wall outlet

Yes I have tried multiple ports, computers, and cables. Oh well, I guess I'll live with it.
Sent from my SGH-T989 using XDA App

+1
dimitrie said:
usb will always charge really slow compared to an wall outlet
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what he said
if you want fast charging, do it from a wall outlet

jasontx said:
My device charges very slowly if the display is off. If the display is on it does not charge at all.
I've installed the Samsung drivers from the website. Is anyone else able to charge their device via USB? I need to know if I should exchange mine.
Sent from my SGH-T989 using XDA App
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USB supplies max 500mA. Is probably half what the wall charger is giving you. Nexus S is only 750. My guess gsII is 1000 (1A). iPad charger is 2A.
Edit: no a higher power one than the stock charger won't charge the phone faster in a noticeable way. Charging circuits in remotely modern phones limit current to that safe max. If they don't you're probably risking damaging your phone.
Sent from my Nexus S using Tapatalk

I understand that the USB on the computer is weaker. I was surprised to see that when the phone was connected to the computer, screen on, and streaming music that my battery was actually reducing slowly. I would expect the opposite and this behavior seems abnormal.
Sent from my SGH-T989 using XDA App

that's exactly the reason why in car i use the 2A charger (2000 mAh), and in house i use 1000 mAh wall charger
if i leave it at the computer USB charging, i've to keep it iddle for it to charge after like... 4+ hours
that's usually what i do at the work place, so i keep the battery topped up, for when i need to jump back in the road
as long as you have WiFi on, or 3G/4G on, or if the CPU is in high activity, you'll never see the charge ever reaching the battery.
i always keep a spare wall charger at the office as well for times when i need a quick charge

Thanks for the input everyone! I'm glad it's not defective cause I love this phone!
Sent from my SGH-T989 using XDA App

My issue is a little different but decided against another thread. My phone will not charge with any other cable. Has to be pluged in to oem cable. I left it all night on my old phones charger and woke up with it almost dead. Plugged into oem it just charges super slow. Should i take it back?
Sent from my SGH-T989 using Tapatalk

Does the other micro USB cable work with other devices? If not, might be a defective cable.
On a side note, who prefers to charge via 500mah vs 1A? I have been charging my phone since day one using my printer, as well as my old Iphone. My battery performance is great! +24 hours on a single charge with moderate browsing 50/50 wifi and 4g. I typically enable the "power save" feature with minimal brightness and 15 sec screen timeout.

I worked on other devices
Sent from my SGH-T989 using Tapatalk

[Q] Charging problem
I have an issue that has popped up today. When charging through PC, the phone (not battery) is getting pretty hot and losing charge. I'm not sure what could be causing it. I stopped all extra processes and turned off the screen. This is not occurring when the phone is off.

[Q] What the hell is going on with the charging??

Id like to hope im the only one whos experienced this. But whats going on with the charging? I love the dam phone but while charging it sometimes drops in percentage. Its happened in alot of situations. Stock unrooted, stock rooted, Frosty jb, and Xquizit. I try to underclock to see if that makes a difference but it gets worse. Can someone, anyone please help me out. It was even left on the charger last night and I awoke to 15%

Sounds like either a bad charger or a bad connection between phone and battery.
Sent from my SGH-T989 using xda app-developers app

Thank you. At least its possible it may be the charger and or battery and not the phone. Much appreciated.

I don't know what rom you on now, just keep as stock for now then keep checking 1 or 2 day still have problem, bring back to TMO for warranty.

Are you using the usb cable and the wall charger that come with the phone? I noticed that when I am using my other usb cable I brought from the internet to charge the phone with my PC, which only supports max 500mA current per USB port, the phone doesn't seem to be charging at all. Just like the op said, the battery percentage went down even though the phone is saying it is charging. Then I switched to the usb cable that come with the phone, and plug in to the same usb port on my pc. What you know, it is charging correctly now, the percentage went up. And it charge much faster when using the 2A wall charger that come with the phone.

I think the problem with charger
Sent from my LG-P500 using xda premium

If you are near a local T-Mobile store or distributor, why not pop in with your kit (phone, charger and cable) and do a little process of elimination to see if your problem is your phone and/or cable and/or your charger?

Ive been experiencing the same, but when using other chargers and usb cables. Weird. But it never happens with the charger the phone came with.
Sent from my SGH-T889 using xda app-developers app

[Q] What is probably the cause of slow charging?

I was curious that my phone sometimes used more than 5-7 hours to make the battery fully charged. It occurs on both Adam and Perseus kernel, and on both pre-rooted and Wanam rom.
And of course, I charge my phone with the plug, not USB port.
Sent from my GT-N7100 using xda premium

I have the same issues once in a while. Try to download GCC (Galaxy Charging Current) from Play Store and check on your average current while charging. Then from there, you can see where the problem occur.

The charger input on the phone is the cause
bankgg said:
I was curious that my phone sometimes used more than 5-7 hours to make the battery fully charged. It occurs on both Adam and Perseus kernel, and on both pre-rooted and Wanam rom.
And of course, I charge my phone with the plug, not USB port.
Sent from my GT-N7100 using xda premium
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I knew something was wrong when it took my phone 6 hours to charge from 22% to fully charged on the stock kernel, so I had my carrier swap my data cable. Swapping the data cable didn't fix the random slow charging issue. If you view the battery stats under settings, your phone will indicate what kind of source it's getting its charge from. I discovered sometimes when you plug your phone in via the stock travel AC adapter, your phone detects it as a USB port. It's not the charger that is the problem, but how Sammy designed the charger port or an error during the assembly process. I found a work around to avoid the phone thinking it's being plugged into a USB port. Once I initially lineup the data cable with the charger port, very very gently push down on the data cable as you fully insert it into the charger port. If you don't do so, it's usually a hit or miss when it comes down to what the phone will detect between AC and USB mode. This is the first phone that I own that seems to have this issue. Every since I've figured out what's been happening, I've been able without fail to avoid the slow charging issue.
Since discovering the quick fix to the slow charging with the Samsung data cable, I've discovered that my old HTC data cable works flawlessly without having to make any adjustments as I insert the cable into the charger port.

I tried using this app and it told me as the picture below.
What does it mean? Is it normal or abnormal?
Sent from my GT-N7100 using xda premium

What mode is your phone indicating that it's connected to. This can be viewed in the battery stats screen.
Sent from my SCH-I605 using Tapatalk 2

[Q] Charging problem

The phone was working perfectly until last few days. When connected to the socket via the charger, it shows that the phone is charging but it isn't(the battery instead keeps on decreasing while on charge) sometimes charging begins but really slowly.
However when connected with the computer through the usb, its charging ok.
Tried with an other samsung charger too, same problem.
Sent from my GT-I8160 using xda app-developers app

arhamiq said:
The phone was working perfectly until last few days. When connected to the socket via the charger, it shows that the phone is charging but it isn't(the battery instead keeps on decreasing while on charge) sometimes charging begins but really slowly.
However when connected with the computer through the usb, its charging ok.
Tried with an other samsung charger too, same problem.
Sent from my GT-I8160 using xda app-developers app
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Have you tried an iPhone (or generic USB) charger with the known working data cable?
Charger or USB power status is determined by the data lines instead of the accessory ID wire so you should get high speed charging with... well, mostly every charger.

@arhamiq, do U use custom ROM?
tapped from ace

_DsP_ said:
@arhamiq, do U use custom ROM?
tapped from ace
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Been using cm 10.2 since it actually came out.
Maybe its the chargers fault :s
Sent from my GT-I8160 using xda app-developers app

Have you changed settings in "Galaxy Ace 2" app? there is setup for wall socket current in "USB" sub menu - maybe you tweaked something there.
If you have any other charger with micro-usb try it (it should be fine with all chargers with amper range around 1A).

Tried with a sony charger but charges really slowly.
Sent from my GT-I8160 using xda app-developers app

oh, one more thing, have you cleaned teh usb port in your phone?
If not, switch the phone off, remove baterry (it's for removing any current from the cirquits) and with fine wooden toothpick or something similar, try to go around inside of a usb port of the phone - I was really supprised how much fabric can be pilled up there

Usb port problem

So my phone charges no problem, but when I connect the phone to my Pc it only show a slow charging icon and won't let me do anything else. I'm not on original rom and not rooted. Any ideas or is my USB port just broken?
Sent from my LG-E975 using xda app-developers app

Svennjamin said:
So my phone charges no problem, but when I connect the phone to my Pc it only show a slow charging icon and won't let me do anything else. I'm not on original rom and not rooted. Any ideas or is my USB port just broken?
Sent from my LG-E975 using xda app-developers app
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This normally original charger 5v 1200mah but computer's USB 5V 500mAh
Low mAh makes slow charge

streak_man said:
This normally original charger 5v 1200mah but computer's USB 5V 500mAh
Low mAh makes slow charge
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yes i did know that. but what im getting at is that it wont connect to my computer, cannot connect as mtp,usb,lg softw. org camer ptp just starts charging rightaway. i tried to reset the phone to factory settings and nothing happens

Svennjamin said:
So my phone charges no problem, but when I connect the phone to my Pc it only show a slow charging icon and won't let me do anything else. I'm not on original rom and not rooted. Any ideas or is my USB port just broken?
Sent from my LG-E975 using xda app-developers app
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I also have the same problem like you, I try to change many computers and reinstall driver again but nothing happen. When i connected the phone it works only charging mode.