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
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
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.

Charging while in use (or lack there of)

Is it me or does this thing not charge while in use? I'm using the a/c adapter btw

It works for me when hooked up to my laptop. It goes slower depending on how many resources are being used. My G1 wouldn't charge while navigation was on for instance and my Nexus S barely charged at all while I was navigating.
Sent from my Galaxy Nexus using xda premium

All I'm doing it texting and surfing. I' trying to charge it before I board my 8 hour flight to Europe. I have two movies on here I want to watch and the charge has only gone down since I plugged it in. It just slows down the rate. I'm starting to think my Galaxy Nexus is a dud. I barely get 9 hours with light use. My brightness is always below halfway.

I guess I'm alone on this issue, or nonissue I should say

With the AC adapter that doesn't happen to me but with the car adapter I can't figure out a way for it to charge instead of lose battery while using Navigation and Bluetooth. All car chargers are detected as USB and I have tried several adapters... (purchased and returned 3 different adapters including Samsung one and have 3 other adapters myself)

bump......

Not charging while on car charger
I'm having the same issue. I find it difficult to believe there are a limited number of us with this problem.

dagoat said:
I'm having the same issue. I find it difficult to believe there are a limited number of us with this problem.
Click to expand...
Click to collapse
Are you using the AC charger that came with the phone or an old one/third party? You could be running into the same issue as the guy with the car charger(see below). Not all microusb chargers are created equally.
PCC said:
With the AC adapter that doesn't happen to me but with the car adapter I can't figure out a way for it to charge instead of lose battery while using Navigation and Bluetooth. All car chargers are detected as USB and I have tried several adapters... (purchased and returned 3 different adapters including Samsung one and have 3 other adapters myself)
Click to expand...
Click to collapse
Make sure the car charger you're using is at least a 1AMP charger. Anything less than that and the phone will use a USB charging mode. You can see the ampage of a particular charger on the bottom/backside. Its usually in very small print but its there.
BTW the Galaxy Nexus can actually run off wall paper alone(i.e. no battery inserted) on a 2.1AMP charger that comes with most tablets these days. I use my Galaxy Tab charger for it!
Sent from my Galaxy Nexus

as unremarked said, you need a 1AMP car charger to get it to work. i had to buy a new one.
As far as the AC charger, the one that the phone came with i had issues charging, but i went back to a black berry charger i bought as a replacement for my nexus one, and i can be playing cordy on that and the battery stays charged.

I have a verizon charger leftover from my Droid 1 and I drove across the country a few days ago using navigation 100% of the trip. I also had a few hours of conversation and regularly streamed podcasts and music. I did all of this with the extended battery at a full charge always. The charger was never even noticeably warm. The trip took 3 days and I didn't charge over night so each day started below a full charge.
I suspect you have a problem with one of three things. Either the phone has a bad charging component, your battery is defective or your charger has less output than it claims.
Sent from my Galaxy Nexus using xda premium

Most USB chargers are only 500mA. Which isn't a lot considering it takes 2100mA just to keep it on.
Sent from my Galaxy Nexus using XDA App

It's happening again, I can't use this thing while charging. I put it in airplane mode and it still dies while I'm using it. It doesn't shutdown either, it just cuts off. It's plugged into the wall btw.

rashad1 said:
It's happening again, I can't use this thing while charging. I put it in airplane mode and it still dies while I'm using it. It doesn't shutdown either, it just cuts off. It's plugged into the wall btw.
Click to expand...
Click to collapse
Did you bother to read anything in this thread?
Sent from my Galaxy Nexus

Yeah I did. I've never had this issue with any phone that I've owned.

make sure it's charging in 'AC Mode' and put a chunk of dry ice underneath it w/ some protection in between.
you are welcome !

rashad1 said:
Yeah I did. I've never had this issue with any phone that I've owned.
Click to expand...
Click to collapse
If you did, then you'd realize its less likely an issue with your phone and more likely you're using a charger that doesn't push enough power to the phone.
Sent from my Galaxy Nexus

unremarked said:
If you did, then you'd realize its less likely an issue with your phone and more likely you're using a charger that doesn't push enough power to the phone.
Sent from my Galaxy Nexus
Click to expand...
Click to collapse
Its the one that came with the phone, 1A 500V, pretty standard these days.

A few comments:
All USB cables are not alike. Not all transmit the proper power. So with your AC adapter, you might try other USB cables to have the phone see it as "AC" and not "USB".
The Verizon car charger does work properly with the Galaxy Nexus, and is seen as "AC" power. Interestingly, if you use the 2nd USB port, even with a cable that does function correctly, it is still seen as "USB" and not "AC". So only the primary connection there will provide full power.
I'm also still looking for a car charger, other than Verizon's, that will be seen as "AC" - I'd get the Verizon one, but don't like the "curly" cord, since I'm duct taping it across my dash, and it's a lot more bulky than a regular straight cord.

Cheyse said:
Most USB chargers are only 500mA. Which isn't a lot considering it takes 2100mA just to keep it on.
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
If it takes 2100ma to keep it on it would never ever charge on any charger.
Also, considering the fact the battery is only 1750mah that mean the device would only stay on for around 45 minutes before being fully discharged if it wasn't plugged in.
Somehow your figures are a bit off.
---------- Post added at 09:34 AM ---------- Previous post was at 09:23 AM ----------
DLCPhoto said:
A few comments:
All USB cables are not alike. Not all transmit the proper power. So with your AC adapter, you might try other USB cables to have the phone see it as "AC" and not "USB".
Click to expand...
Click to collapse
How does a USB cable "not transmit the proper power?" What is "proper power" as opposed to "improper power?" Power goes through the RED wire in the USB cable. That's a USB spec. Either it carries current or it does not.
Some devices need to see 2 USB pins to be jumpered in order to set charge on (the Galaxy Tablet is notorious for this which is why you can buy a special cable adapter to create this jumpered charger pin if you are not using their "special" charger. This adapter allows you to to be able to charge the tablet off USB which it normally won't do, faking the tablet to make it think it's on the AC charger, albeit very slow).

MisterEdF said:
If it takes 2100ma to keep it on it would never ever charge on any charger.
Also, considering the fact the battery is only 1750mah that mean the device would only stay on for around 45 minutes before being fully discharged if it wasn't plugged in.
Somehow your figures are a bit off.
---------- Post added at 09:34 AM ---------- Previous post was at 09:23 AM ----------
How does a USB cable "not transmit the proper power?" What is "proper power" as opposed to "improper power?" Power goes through the RED wire in the USB cable. That's a USB spec. Either it carries current or it does not.
Some devices need to see 2 USB pins to be jumpered in order to set charge on (the Galaxy Tablet is notorious for this which is why you can buy a special cable adapter to create this jumpered charger pin if you are not using their "special" charger. This adapter allows you to to be able to charge the tablet off USB which it normally won't do, faking the tablet to make it think it's on the AC charger, albeit very slow).
Click to expand...
Click to collapse
What I meant is that using the official Verizon car charger, I connected my Galaxy Nexus with the built-in micro USB connector, and my phone showed it to be charging, and the source recognized as "AC". I then tried connecting it using a couple of different cables, using the secondary USB slot on the Verizon charger:
When I used the cable from my wife's LG Env Touch, my Galaxy Nexus didn't show it as charging at all. It apparently wasn't receiving enough to even be recognized as "USB" charging.
When I used the cable that came with my Galaxy Nexus, plugged into the same USB port on the Verizon charger, my phone showed it being charged, but with the source shown as "USB".
So the type of cable will impact whether or not a given adapter will even charge the phone. And the charger itself also has an impact.
To get the phone to charge, and the source recognized as "AC" you are going to need the right charger and cable. As I said, the Verizon charger, using the built-in cable, works fine.

USB Fast Charge mod

Hello I was wondering if there is a mod to have usb fast charge when plugged into the comp. I just came from a Inc and there was a mod flashable through cwm. it was very nice. it charged the phone just as fast as an outlet, if not faster. is there a mod?
thanks

Interesting... I'd be interested in this as well.
Sent from my Galaxy Nexus using Tapatalk

+1 this would be great!

Agreed, awesomeness would ensue.
Sent from my Galaxy Nexus using Tapatalk

the developer behind it for the htc Inc was chad0989
. he made the incredikernels and the incredicontrol app. tried to use incredicontrol app just for fast charging but didnt work since the kernel doesnt support HAVS or SVS. Im on Francos btw

Imoseyon said once any speed charges were done by taking code out that slows it. Nexus doesn't have it in kernel now according to him so not likely.
Sent from my Galaxy Nexus using xda premium

cricketsmoke said:
Imoseyon said once any speed charges were done by taking code out that slows it. Nexus doesn't have it in kernel now according to him so not likely.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Would there be a way to selectively trigger AC mode as opposed to USB mode?

just asked this in the IRC chan and few devs said doing this could mess up your computer system. point of the hack would be to trick the cheap car chargers into giving u the full charge, not the computer.

droidkevlar said:
just asked this in the IRC chan and few devs said doing this could mess up your computer system. point of the hack would be to trick the cheap car chargers into giving u the full charge, not the computer.
Click to expand...
Click to collapse
hmm well i know chad did it and no one that has ever used it had a problem. my computer is fine and so was my phone. il send him a pm and see if he responds

sent him a pm

is it possible to take apart his incredicontrol apk and see how it works that way? its in the market

droidkevlar said:
just asked this in the IRC chan and few devs said doing this could mess up your computer system. point of the hack would be to trick the cheap car chargers into giving u the full charge, not the computer.
Click to expand...
Click to collapse
Not many motherboards have USB ports capable of supplying current in excess of the spec 500mA.
Research modding your (car?) Charger to be detected as AC charger instead of USB.
Sent from my Nexus Prime.

What about a mod that allows the 3 pogo pins to receive more than 500mA(recognized as USB)? That seems ridiculously low and is far more relevant/needed. If you want to charge through the pogo pins you are just SOL.

Moved to General.

morfic said:
Not many motherboards have USB ports capable of supplying current in excess of the spec 500mA.
Research modding your (car?) Charger to be detected as AC charger instead of USB.
Sent from my Nexus Prime.
Click to expand...
Click to collapse
I haven't seen a device that can't do 1A over USB in like a decade.
Hell, even non-PCs have no problems with it. I've done it off a Wii before just for fun.
A lot of newer motherboards can even do 2A over USB (to charge iPads). Most ASUS boards in the past 2-3 years have this as an advertised feature (asus ai charger).

Very interested in this actually. Not so much for USB/AC charging on a computer, but for MHL AC charging.
With the current MHL adapters (even when plugged into an AC outlet), the Gnex reports USB charging. To make maters worse, the screen does not shut off on the Gnex. After an hour or two your battery will die. 500ma is just not enough.
The MHL spec says that 500ma is the charging spec. However, I tweeted with Tim Wong:
http://twitter.com/WongTim
He is the president of the MHL association and he said 500MA is the minimum, not the maximum. My quess is that the Gnex won't try to draw more than 500MA since the data pins can't be shorted on the MHL connector.
I think the MHL adapter will provide for more current, just like most laptops and desktops.
With this mod, it would be nice to tell the Gnex to AC charge. Tim suggest that the phone should not draw more than safely required so long as the voltage doesn't drop on the MHL adapter/MHL tv.
I think the Gnex, by design looks for the shorted data pins and doesn't try to push the envelope as far as monitoring the voltage drop on a USB detected power source.

I recall reading about some smoking/dead phones from fast charging mods. Thanks but no thanks.

sruel3216 said:
Hello I was wondering if there is a mod to have usb fast charge when plugged into the comp. I just came from a Inc and there was a mod flashable through cwm. it was very nice. it charged the phone just as fast as an outlet, if not faster. is there a mod?
thanks
Click to expand...
Click to collapse
I came at this problem from a different angle and accidentally found a solution for you. I have an iPad and it wouldnt charge from my PC so did some research and came up with this:
http://event.asus.com/mb/2010/ai_charger/
Its a free driver from asus that increases the max amp on USB bus. Supports most mobos and works awesome on my PC and dell laptop, I can now charge the iPad on there.
It also has the benefit of fast charging of my Nexus. Double win.
EDIT: Ignore the ****ty site design, it looks terrible but does as it says

TheBishopOfSoho said:
I came at this problem from a different angle and accidentally found a solution for you. I have an iPad and it wouldnt charge from my PC so did some research and came up with this:
http://event.asus.com/mb/2010/ai_charger/
Its a free driver from asus that increases the max amp on USB bus. Supports most mobos and works awesome on my PC and dell laptop, I can now charge the iPad on there.
It also has the benefit of fast charging of my Nexus. Double win.
EDIT: Ignore the ****ty site design, it looks terrible but does as it says
Click to expand...
Click to collapse
Just installed and will give it a go. Wish me luck people.
Edit: Didn't work for me. Same charging speed with and without it.

Here is a pm back from chad:
I'll look into it and see if I can come up with something for the gnex also. I do not plan to release a kernel, but possibly I could provide a patch.
Can you get me a kmsg (/proc/kmsg) while you plug your phone into an AC source, and then a USB source?
adb shell "cat /proc/kmsg"
Also a log of the power draw while connected to USB and to AC
Thanks

[Q] Longer Cable = Less Voltage ?

OK, I was wondering...
I got a 2m cable for my hox, and it seems to work fine.
BUT the charging time is much longer with it!
Like 4.5-5h for full charge!! Why is that?
Does the extra meter looses power?

It depends on the type of charger.
If you look at battery stats does it say charging (AC) or Charging (USB)
Phone chargers have to have a couple of pins shorted out to charge at full speed
Sent from my HTC One X using xda app-developers app

bagofcrap24 said:
It depends on the type of charger.
If you look at battery stats does it say charging (AC) or Charging (USB)
Phone chargers have to have a couple of pins shorted out to charge at full speed
Sent from my HTC One X using xda app-developers app
Click to expand...
Click to collapse
It's slower Compered to the Same Charger.
And it says AC too.

V=I*R where V is voltage, I is current and R is resistance. The charger will hold voltage constant at 5 V for USB.
A longer cable increases the resistance of the circuit. This reduces the current, and increases the charge time.

frederuco said:
V=I*R where V is voltage, I is current and R is resistance. The charger will hold voltage constant at 5 V for USB.
A longer cable increases the resistance of the circuit. This reduces the current, and increases the charge time.
Click to expand...
Click to collapse
Ya, Thats what I thought
1. So what is the longest cable I can use without deceasing the current?
2. I tried a new charger that gives 5V 1.5A and it's even slower! (and the
phone says USB CHARGING, why is that?

Strange that a 1.5 A charger ended up slower.
I would say 1-2 meter cable is about the longest I would use for my USB chargers. For my tablet I use a 1 meter cable. Same for my phone (but it is not the same phone you have).

frederuco said:
Strange that a 1.5 A charger ended up slower.
I would say 1-2 meter cable is about the longest I would use for my USB chargers. For my tablet I use a 1 meter cable. Same for my phone (but it is not the same phone you have).
Click to expand...
Click to collapse
How can I know how much output the charger really gives?
2m is too long i think .. it takes about 6h to charge the phone!!

Doorman404 said:
2. I tried a new charger that gives 5V 1.5A and it's even slower! (and the
phone says USB CHARGING, why is that?
Click to expand...
Click to collapse
As i said previously about the shorted pins.
If they are not shorted then it will appear as USB charging.
Even though the charger can provide 1.5amps the phone is limiting the pull to 0.5amps because it thinks its pulling power via USB.
Sent from my HTC One X using xda app-developers app

bagofcrap24 said:
As i said previously about the shorted pins.
If they are not shorted then it will appear as USB charging.
Even though the charger can provide 1.5amps the phone is limiting the pull to 0.5amps because it thinks its pulling power via USB.
Sent from my HTC One X using xda app-developers app
Click to expand...
Click to collapse
Oh, I understand, Thanks!
Any way I can Short those connectors myself?
cause I know the phone can take 1.5A from other chargers.

can anyone know when you charge the phone in less then 80% in will charge normally but beyond it, it wil slows the charging down...that will make charging longer...i check this and it only happen in HTC phone...

enumbe many
The difference is not noticable

bagofcrap24 said:
As i said previously about the shorted pins.
If they are not shorted then it will appear as USB charging.
Even though the charger can provide 1.5amps the phone is limiting the pull to 0.5amps because it thinks its pulling power via USB.
Sent from my HTC One X using xda app-developers app
Click to expand...
Click to collapse
IF anyone's intrested, I've found this guide
How to make your phone drew more power from such chargers
http://translate.google.com/transla...tly-reported-64-stingy-reconstruction&act=url
Enjoy

Excellent guide on how to melt the usb driver chip on your motherboard.

BenPope said:
Excellent guide on how to melt the usb driver chip on your motherboard.
Click to expand...
Click to collapse
:laugh: Yep. :laugh:
OR
to use with wall chargers that doesn't give
you the full load. Like in my case

[APP][ROOT][KT] Fast Charge Toggle widget

I love @ktoonsez kernel I also LOVE his fast charging option. Was using schools computer to charge and was charging at 900 mA love it.
Got tired of going through the app to toggle this. So i made a widget that can be placed on the home screen or the lock screen. Im sorry, the image is hideous. xD wasnt too sure of what to use as an image so bear with me xD
Just install the APK then either on your home screen or your lock screen add a widget and select Fast Charge Toggle. Done. Will prolly work on other kernels with fast charging option but only tested on @ktoonsez kernel

From almost totally dead, it takes me about two hours for a full charge with normal charging.
I've never bothered with tweaking charging settings. How much faster would fast charging accomplish the same thing?

Like the idea, but what does fast charging do ultimately to you're overall battery life and health long-term?
Sent from my SGH-M919 using XDA Premium 4 mobile app

HampTheToker said:
From almost totally dead, it takes me about two hours for a full charge with normal charging.
I've never bothered with tweaking charging settings. How much faster would fast charging accomplish the same thing?
Click to expand...
Click to collapse
The fast charging kernel tweaks are only for USB devices. Like from a computer, stereo unit, cigarette lighter. Not from the wall outlet.
SinCityAtNight said:
Like the idea, but what does fast charging do ultimately to you're overall battery life and health long-term?
Sent from my SGH-M919 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
It has no side effect on the battery. The stock charger has I think like 2a charging power, most computers have only 500mA. Fast charging simply tricks the kernel into thinking it's plugged into a wall outlet and charges at the full power available. The only side affect is that it could ruin the USB port. However after two years of using it I have never seen any issues myself nor have I read any.
Sent from my SGH-M919 using Tapatalk 2

Not my experience. I have to desagree. I always use fast charge and using a wall outlet works better that any other mentioned before. Im not a developer, just a happy user. But works different for me. I can tell what are you saying is not always true for all users.
Sent from my SGH-M919 using xda premium

ToledoG28 said:
Not my experience. I have to desagree. I always use fast charge and using a wall outlet works better that any other mentioned before. Im not a developer, just a happy user. But works different for me. I can tell what are you saying is not always true for all users.
Sent from my SGH-M919 using xda premium
Click to expand...
Click to collapse
According to what I personally saw in the source code and what @ktoonsez said, the fast charging gets ignored when it's an ac charger. Just going off of source code and what the code actually does. Might just be a placebo effect on your end all in all tho fast charging sure is the best thing since sliced bread xD
Sent from my SGH-M919 using Tapatalk 2

elesbb said:
According to what I personally saw in the source code and what @ktoonsez said, the fast charging gets ignored when it's an ac charger. Just going off of source code and what the code actually does. Might just be a placebo effect on your end all in all tho fast charging sure is the best thing since sliced bread xD
Sent from my SGH-M919 using Tapatalk 2
Click to expand...
Click to collapse
Why is it that when I charge and use off the charger, my phone gets hot quick. I revoke SU permissions and reboot then my phone is cool so am I doing something wrong. I'm on virginrom2.3
Sent from my GE4.3 M919 using xda premium

MrPapito429 said:
Why is it that when I charge and use off the charger, my phone gets hot quick. I revoke SU permissions and reboot then my phone is cool so am I doing something wrong. I'm on virginrom2.3
Sent from my GE4.3 M919 using xda premium
Click to expand...
Click to collapse
What do you mean? I do not understand at all what you are trying to say..

elesbb said:
What do you mean? I do not understand at all what you are trying to say..
Click to expand...
Click to collapse
When superuser asks permission and I grant it, the phone charges fast, but whether its charging or not, it gets hot very quickly
Sent from my GE4.3 M919 using xda premium

MrPapito429 said:
When superuser asks permission and I grant it, the phone charges fast, but whether its charging or not, it gets hot very quickly
Sent from my GE4.3 M919 using xda premium
Click to expand...
Click to collapse
I have no idea. Nothing is happening until you click on the widget then it executes the code and dies right away. Get a task manager (preferably SystemTuner) and see whats eating your CPU.

Thanks a lot.
I use fast charge a lot and this makes it much easier!
Sent from my SGH-M919 using XDA Premium 4 mobile app

Thank you!! Been looking for something like this...my wall plug for my charger is far in my office so with this I can charge from my computer monitor!!
Sent from my SGH-M919 using XDA Premium HD app

I have a car charger that has a spare USB plug on it. If I use the actual car charger it charges as normal, but when I plug in the white USB cord that came with the phone into the same car charger it definitely charges almost twice as fast. Living proof. I was on a road trip using GPS and LTE while streaming music. While on the car charger it would almost not charge at all, just supplement enough to not drop in percentage. Then, when I switch to the other USB it charges up no problem.. Really works.

Elesbb,
First off, Thank you for making this and sharing it to the community. I have been looking for something just like this. Comes in very handy.
I don't know if you update this anymore, but I was wondering if you could make a choice for different icons for the widget. If not, no big deal, the icon is just a little too cartoon-y for me.
Thank you!

re: charging mod
elesbb said:
The fast charging kernel tweaks are only for USB devices. Like from a computer, stereo unit, cigarette lighter. Not from the wall outlet.
It has no side effect on the battery. The stock charger has I think like 2a charging power, most computers have only 500mA. Fast charging simply tricks the kernel into thinking it's plugged into a wall outlet and charges at the full power available. The only side affect is that it could ruin the USB port. However after two years of using it I have never seen any issues myself nor have I read any.
Sent from my SGH-M919 using Tapatalk 2
Click to expand...
Click to collapse
I just googled "maximum usb milliamp output from a standard computer usb port" and to my
surprise I must have found at least 25 links which I read that deals with this subject.
And all of them specifically point out that a normal laptop or desktop computer's usb port puts
out a maximum of 500 milliamps unless someone has some special usb pci/pcie card installed
inside their home computers, I never seen any that do but it is possible that such a card exists.
So this mod would really not do anything at all, it would not charge faster and it could not hurt
the usb ports of any computer since it cannot change the max. milliamp output of the usb port.
Now if we had some kind of special program which we install in our computers to allow the usb
ports to put out 2amps (2000 milliamps) then it would charge just as fast as our wall AC chargers do.
But modifying anything inside our phones cannot change the fact that it's the computer and it's usb
ports which determines what the maximum amount of milliamps that it can output.
Look at it this way, if you have a 5 gallon gas can you cannot pour 10 gallons of gasoline out of it.

Misterjunky said:
I just googled "maximum usb milliamp output from a standard computer usb port" and to my
surprise I must have found at least 25 links which I read that deals with this subject.
And all of them specifically point out that a normal laptop or desktop computer's usb port puts
out a maximum of 500 milliamps unless someone has some special usb pci/pcie card installed
inside their home computers, I never seen any that do but it is possible that such a card exists.
So this mod would really not do anything at all, it would not charge faster and it could not hurt
the usb ports of any computer since it cannot change the max. milliamp output of the usb port.
Now if we had some kind of special program which we install in our computers to allow the usb
ports to put out 2amps (2000 milliamps) then it would charge just as fast as our wall AC chargers do.
But modifying anything inside our phones cannot change the fact that it's the computer and it's usb
ports which determines what the maximum amount of milliamps that it can output.
Look at it this way, if you have a 5 gallon gas can you cannot pour 10 gallons of gasoline out of it.
Click to expand...
Click to collapse
The maker of this (ktoonsez) stated this in his thread. However, a lot of computers (newer ones) do have higher power outputs to power things like external hard drives, cooling fans... etc. For instance, mine, when paired with the fast charging mod, outputs 700ma but without, stays at 500ma. So while you are correct, there are a lot of computers (especially newer) that do have huger output ratings. This is clearly seen when my external hard drive won't work on my grandfather's dinosaur computer (even his new printer has issues). But plugged into my laptop, it's has no problem.
Also, I believe USB 3.0 has a 1amp output.
Sent from my SGH-M919 using Tapatalk

re: charging mods
elesbb said:
The maker of this (ktoonsez) stated this in his thread. However, a lot of computers (newer ones) do have higher power outputs to power things like external hard drives, cooling fans... etc. For instance, mine, when paired with the fast charging mod, outputs 700ma but without, stays at 500ma. So while you are correct, there are a lot of computers (especially newer) that do have huger output ratings. This is clearly seen when my external hard drive won't work on my grandfather's dinosaur computer (even his new printer has issues). But plugged into my laptop, it's has no problem.
Also, I believe USB 3.0 has a 1amp output.
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
You know what, you are just about right, I just did some more googling and found
that the usb 3.0 ports on newer computers do have a greater output than 500milliamps.
They have a maximum of 900milliamps, still no where near the 2000milliamp which
the home charger puts out, but it's close to double of the standard usb 2.0 ports.
I read that many newer computers including mine has a dedicated 3.0 port which stays awake
even if we turn the computer off & it continues charging whatever is plugged into the 3.0 port.
So 900milliamps is a lot better than 500milliamps when comparing usb 2.0 to 3.0 however
current is current, the phone itself cannot distinguish between a 500milliamp or 900milliamp
charging rate, if it gets 900ma it will charge a lot faster than if it only gets 500 milliamps.
All cell phones have a safety feature built into their circuitry which prevents us from charging
the phone at a higher rate than what Samsung specifies by plugging it into a charger which puts
out more than 2amps, if the phone did not have that circuitry it would dramatically shorten the life
of the battery.
That's why Samsung ships 2amp home chargers with their phones and not a 2.5 or a 3amp one.
If this mod which is being discussed here defeats the safety feature in the phone's circuitry which
prevents it from being charged too fast then I would highly advise against installing or using it.
The only time a higher rated battery charger should be used is if we have an extended battery
which was rated at let's say 4200milliamps in which case a 3-4 amp charger would be best.

Misterjunky said:
You know what, you are just about right, I just did some more googling and found
that the usb 3.0 ports on newer computers do have a greater output than 500milliamps.
They have a maximum of 900milliamps, still no where near the 2000milliamp which
the home charger puts out, but it's close to double of the standard usb 2.0 ports.
I read that many newer computers including mine has a dedicated 3.0 port which stays awake
even if we turn the computer off & it continues charging whatever is plugged into the 3.0 port.
So 900milliamps is a lot better than 500milliamps when comparing usb 2.0 to 3.0 however
current is current, the phone itself cannot distinguish between a 500milliamp or 900milliamp
charging rate, if it gets 900ma it will charge a lot faster than if it only gets 500 milliamps.
All cell phones have a safety feature built into their circuitry which prevents us from charging
the phone at a higher rate than what Samsung specifies by plugging it into a charger which puts
out more than 2amps, if the phone did not have that circuitry it would dramatically shorten the life
of the battery.
That's why Samsung ships 2amp home chargers with their phones and not a 2.5 or a 3amp one.
If this mod which is being discussed here defeats the safety feature in the phone's circuitry which
prevents it from being charged too fast then I would highly advise against installing or using it.
The only time a higher rated battery charger should be used is if we have an extended battery
which was rated at let's say 4200milliamps in which case a 3-4 amp charger would be best.
Click to expand...
Click to collapse
It doesn't defeat the security of built in kernel protection. Androids own API has a way to detect if the plug is wall charger or USB. The mod simply tells android OS that the USB charger is an AC charger and to not limit charging to USB levels. That's why USB doesn't work when the mod is enabled. It's no way harmful to the device. Been using it since I've gotten my phone and even back on my s3.
Sent from my SGH-M919 using Tapatalk

elesbb said:
I love @ktoonsez kernel I also LOVE his fast charging option. Was using schools computer to charge and was charging at 900 mA love it.
Got tired of going through the app to toggle this. So i made a widget that can be placed on the home screen or the lock screen. Im sorry, the image is hideous. xD wasnt too sure of what to use as an image so bear with me xD
Just install the APK then either on your home screen or your lock screen add a widget and select Fast Charge Toggle. Done. Will prolly work on other kernels with fast charging option but only tested on @ktoonsez kernel
Click to expand...
Click to collapse
You're right!! The widget is the ugliest thing I've ever seen but it works perfect! Thank you much!!
Sent from my SGH-M919 using xda app-developers app

re: charging milliamps
elesbb said:
It doesn't defeat the security of built in kernel protection. Androids own API has a way to detect if the plug is wall charger or USB. The mod simply tells android OS that the USB charger is an AC charger and to not limit charging to USB levels. That's why USB doesn't work when the mod is enabled. It's no way harmful to the device. Been using it since I've gotten my phone and even back on my s3.
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
Okay, see what you mean.
Did you know that there are 3 or 4 free apps at the playstore which display the amount of mA
the phone is being charged with at any given time, it also displays the maximum mA that the
charger or usb port can charge. Here are a couple links in case you or anyone is interested:
https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free
https://play.google.com/store/apps/details?id=ccc71.bmw