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.

Is this normal???

I've just had a pretty long drive to take my son to the zoo.
I usually don't charge my phone in the car but because I only had 50% battery left I plugged in the car charger while I used Google navigation...
I had the charger plugged in the entire way and when I got there the battery had dropped by around 15%, so basically the navigation was killing the battery quicker than the car charger could charge it up.
Is that normal??? My screen brightness was on around 60%
Thanks for replies
Sent from my Galaxy Nexus using xda app-developers app

zolah said:
I've just had a pretty long drive to take my son to the zoo.
I usually don't charge my phone in the car but because I only had 50% battery left I plugged in the car charger while I used Google navigation...
I had the charger plugged in the entire way and when I got there the battery had dropped by around 15%, so basically the navigation was killing the battery quicker than the car charger could charge it up.
Is that normal??? My screen brightness was on around 60%
Thanks for replies
Sent from my Galaxy Nexus using xda app-developers app
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Well, yes its normal because most likely your car charger is a USB car charger, which charges slower than an AC charger. If you had a custom kernel, and had fast USB charge, then this wouldn't be a problem because it would charge fast enough.
Sent from my Galaxy Nexus using xda premium

I've had battery drop while charging with navigation before, not nearly that bad though.
Sent from my Galaxy Nexus using Tapatalk 2

EpiclyEpic said:
Well, yes its normal because most likely your car charger is a USB car charger, which charges slower than an AC charger. If you had a custom kernel, and had fast USB charge, then this wouldn't be a problem because it would charge fast enough.
Sent from my Galaxy Nexus using xda premium
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Sorry to sound dumb but i dont quite know what you mean there.
Its a straight charger from the ciggerette lighter to the micro USB port. It doesnt convert from the cig charger to a usb/micro usb cable

zolah said:
Sorry to sound dumb but i dont quite know what you mean there.
Its a straight charger from the ciggerette lighter to the micro USB port. It doesnt convert from the cig charger to a usb/micro usb cable
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Well, it means its charging with USB power (Which is about 500 mah.) and sometimes it can't keep up with the phone using power and charging it at the same time. However, if you get a custom kernel with a "Fast USB Charging" option you can make it charge just as fast as an AC wall charger. Therefore, solving your problem with the dropping battery while charging.
Sent from my Galaxy Nexus using xda premium

[Q] Charging Note 2 via Laptop USB

Hi I understand that laptop usb ports only giviing out 500mah and the charger we have gives out 2 amp, and charging via USB port from the laptop will be really slow based on my previous experience with other android phones.
Have anyone try charging the note 2 via a USB port and how long does it takes for a full charge? Just a curious question.

knight900 said:
Hi I understand that laptop usb ports only giviing out 500mah and the charger we have gives out 2 amp, and charging via USB port from the laptop will be really slow based on my previous experience with other android phones.
Have anyone try charging the note 2 via a USB port and how long does it takes for a full charge? Just a curious question.
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I've tried it and it takes around 9 hours if I remember correctly.
Sent from my GT-N7100 using Tapatalk 2

i find the cable quite annoying to be honest, it unplugs itself with any movement and it takes ageeeees to charge but i guess its a good thing because the batt does hold up quite a while. Need something faster tho as im always on the move

i had 87% about an hr ago and i put for charge with usb and is all charged,i always charge with usb

prinzhernan said:
I've tried it and it takes around 9 hours if I remember correctly.
Sent from my GT-N7100 using Tapatalk 2
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Takes mine about 4-5 hours to go from about 25% to full charge from my work laptop.

i tried using my laptop and charge it, 1 hour about 2% increase... which is killing me!!! haha

FloatingFatMan said:
Takes mine about 4-5 hours to go from about 25% to full charge from my work laptop.
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Wow that's fast. Is there anything different or are you using an adapter of sorts to charge from your laptop? Mine takes forever to charge from my laptop.
Sent from my GT-N7100 using Tapatalk 2

prinzhernan said:
Wow that's fast. Is there anything different or are you using an adapter of sorts to charge from your laptop? Mine takes forever to charge from my laptop.
Sent from my GT-N7100 using Tapatalk 2
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Nope. Just regular USB 2.0.
Are you using your phone whilst it's charging? I'm not, except to check an email when one arrives...

Best thing to do is to close wifi and lock the mobile or even completely shut down the mobile if u dont neef it while charging, it will charged faster this way..
↖(^▽^)↗ Sent From Rego Galaxy Note!! ↖(^▽^)↗

FloatingFatMan said:
Nope. Just regular USB 2.0.
Are you using your phone whilst it's charging? I'm not, except to check an email when one arrives...
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Ah no wonder. Yes I was using the phone while charging it on usb. I guess the charging rate could not keep up with the power used.
Sent from my GT-N7100 using Tapatalk 2

I use Android Revolution ROM with Perseus kernel and it's quite faster, but I think this kernel makes the phone draw 900mah instead of 500 so maybe it's because of that.

Sorry. You are all misinformed.
Usb gives .5A in dumb mode.
When the device talks to the host and asks for more, very often it will get 1A on older computers and 2A+ on newer ones.
Some even have a yellow port that gives 2A even when the pc is off.
So theres no simple 'chargin on computer usb' its damn complex. Only if android showed amps its getting....
My nexus one had 'spare parts' app that showed charging was either usb or ac, meaning .5A or >.5A

[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

Losing battery life while connected to charger

I'm losing battery life when using the phone but connected to a charger. The charger im using ive used for my S3 and never had this issue. Any ideas why this could be? TIA
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glock115 said:
I'm losing battery life when using the phone but connected to a charger. The charger im using ive used for my S3 and never had this issue. Any ideas why this could be? TIA
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2
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Your using a 1 mah charger and need to be using 2mah on GN2 which stock one provides

sling said:
Your using a 1 mah charger and need to be using 2mah on GN2 which stock one provides
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Yup. This is one of those phones that you must use the supplied charger. Its more a tablet charger, not a phone charger
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

For starters....they give you a charger with your phone for a reason. You can't really complain if you aren't using the charger that came with the device. Second, the Note has a considerably larger battery, larger display, and quad core processor. These all draw more power. The provided Note charger delivers more voltage than the S3 charger. If anything you would want to use your Note charger to charge your S3.

Thank you gentleman, just checked and I think the one I was using was a 1.5. Might have been the one that came with the original Note cuz it looks similiar but is black. Btw...I wasnt complaining, just looking for help.
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I had the same trouble with note 1 also, I found on the average any chargers over 2 amp tend to work the best. It took forever to find a car charger that could keep up with streaming music especially with LTE.
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

Thats wierd. I charged my phone with a one amp iphone charger last night. Worked just fine.
But it didnt like my 800 mah motorola charger.

My ipad/iphone chargers laying around will charge it just fine as long as it isn't in use at the time, they can't keep up if I am on the phone, well at least note 1. I tried a usb port on a power strip last night on this and it charged very very slowly also.
Fwiw my car has a usb port also, and the results are much the same.

It's a Samsung issue that nobody is willing to acknowledge. For some reason they only allow their phones to draw 0.1A over usb instead of the the standard 0.5A. Your note isn't recognizing your charger and is defaulting to usb mode. The idea that your phone would need more than 1A just to keep up with normal usage is ridiculous.

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