Develop Bugs

Non responsive screen on USB charging

I have an untouched, unbranded Defy on 2.21 which works fine until I connect it to a usb lead for charging whereupon the touch screen stops responding and usually remains like this for about 30 seconds after I have unplugged the usb cable.
Until this morning when I had had it connected overnight to a cradle by the bed and could not turn the alarm off. I ended up pulling the battery, but at least I was awake by then, I suppose.
My question is: is this a common problem, and if so is there a cure?
And a supplementary one: would a custom ROM, CM7 or Miui, solve the problem?
Any help greatfully received!

my defy behaves exactly the oposite way. When connecting with USB cable I am able to ude the phone properly, everything works fine all applications' responsiveness are great. However, when charging the battery using the power cable, the phone starting hanging on every application. Everything starts getting slow and a simple touch takes 5 or 6 seconds to retrieve any action from the phone.
I dont know if this a common behavior for the defy neither if has any fix for that, i got used to it so i always charge my phone when it is off.

I have this issue too, but a little different. When I use a different charger than the original one, the screen is stuck, but I think, it is charging. When I use the standard charger, it works perfektly. I can't explain why.
By the way: I'm using CM7 with the nightly from yesterday

i am also using CM7, but the beta 6 version. I will try this test. I have two different charges, one original and another not, i will see if it behaves the same way you are saying. i will post my results soon.

mtb-defy said:
I have this issue too, but a little different. When I use a different charger than the original one, the screen is stuck, but I think, it is charging. When I use the standard charger, it works perfektly. I can't explain why.
By the way: I'm using CM7 with the nightly from yesterday
Click to expand...
Click to collapse
same here..

Possibility of charger voltages rating differences giving out the output here I guess.
The original charger has been calibrated with just enough voltages/current to supply the phone during charging whilst the non-original charger doesn't have the exact voltage/current needed by the phone during charging thus giving the phone all sort of problems. One may see the non-original charger has label the right rating as per the original label but that doesn't give any warranty it work exactly like the original charger.
I recomend to use only original charger to avoid any damages may occur to the phone.
If one using original charger and still having phone behaving strangely. It may be caused by the phone itself(hardware issue) or the original charger(manufacturing defect) which by this mean you're one of the unlucky owner.... get a replacement ASAP..
I'm not sure about running firmware as such Eclair, Froyo or custom rom would do anything about charging side effect here.

I thought, that an intelligent power management only takes as much current as it needs. My adapter has 2 outputs (max 500mA, max 1000mA). I would expect the phone to work with any of these. When I plug in my navigation unit it works perfectly.
I'll take the adapter with me and try it with the original Defy of a friend. If it works with his phone its a software issue if not I'll have to look out for an alternative charging my phone in the car.

i deeply tested last night, charging with the original charges let the phone 100% useable without any lags while the usb charger kept me having lags and keeping the phone without any good responsiveness. No more usb chargers anymore

same here, original charger (btw, that is ALSO a USB charger...) works, but aftermarket charger, screen no (or little) response.
when connect to pc, works so-so.

mtb-defy said:
I thought, that an intelligent power management only takes as much current as it needs. My adapter has 2 outputs (max 500mA, max 1000mA). I would expect the phone to work with any of these. When I plug in my navigation unit it works perfectly.
I'll take the adapter with me and try it with the original Defy of a friend. If it works with his phone its a software issue if not I'll have to look out for an alternative charging my phone in the car.
Click to expand...
Click to collapse
don't expect every gadgets will work on any universal charger. The exact rating counts on a delicate devices specially on touch screen product. Grounding too must be equally the same from the charger to the phone which would result non side effect on using while charger is connected. Avoid using local based charger if possible as it could save your phone from damaging. Buy original if you really need it.
Sent from my awesome Moto Defy - XDA Premium

this happen to me too sometimes, but not all the time

In Car Charger - Recommendations?

For the past 2 years on my old Desire I was using a homebrew in car charger I put together myself that would happily provide 1A, but my new One X seems a little more power hungry than that and when in car mode it seems to discharge slowly even though it's still plugged in.
Can anybody recommend anything suited for the One X's huge power drain (homebrew or off the shelf, I don't mind) other than HTC's expensive official one? I was looking at the Belkin ones floating about but they still only provide 1A.
Thanks, Dave.

i bought the official ATT universal charger when i got my GS II in Oct and it should work with the One X. also, i think some car docks/mounts are active and have their own chargers, so you might not want both.

I'm using the official HTC Dual USB charger. Does the job nicely. and looks pretty good too. I just wish it was in white to match my One X

Reckless187 said:
I'm using the official HTC Dual USB charger. Does the job nicely. and looks pretty good too. I just wish it was in white to match my One X
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Click to collapse
Did you try it with BT on, Sat Nav + music, screen on ?
I have the same issue as OP. Changed my 800 mah for a 1A but battery is still draining =(

Same problem here... 2x1A HTC Charger... Is there anyboby who tried Belkin 2A mini charger?... I am bit scared, because in my battery monitor history Ive never seen more than + 600mAh... Even when off on home charger... It seems to me, that phone woudlnt allow quick charging... :-(

rahan95 said:
Did you try it with BT on, Sat Nav + music, screen on ?
I have the same issue as OP. Changed my 800 mah for a 1A but battery is still draining =(
Click to expand...
Click to collapse
I had my phone connected to:
Car Bluetooth,
Google Maps on screen,
Screen On,
Poweramp Playing in background via speaker, and
Phone connected to the official HTC Dual USB Car Charger.
No power issues whatsoever. I had it connected and charging for about 10 minutes.

I kind of solved this problem by setting ballanced power consumption policy in my Sygic mobile navigation and lower brightness setting. But still I am unable tu charge my phone while using WAZE (navigation and lot of HSDPA data trafic)...but for now its ok..most important for me is charging during navigation by sygic....
In the end problem is still there and should be solved...I think that its really not ok to charge battery only by 600mA while other phones are able to take 1000mA usually delivered by all chargers..

I just posted about this issue here:
http://forum.xda-developers.com/showthread.php?t=1633245
it's not a problem of charging current, but of the phone battery overheating - it will just stop charging until it cools down (and if there's navi running it won't cool down, ever). I even tried a 2A charger - it will charge happily, but once I start Waze or Sygic it gets hot and starts to discharge again.
I think this is bad design because it should be able to run off the charger without battery in this case, but what it does is charge+discharge battery at the same time... either that or it just starts sipping from the charger when hot because it doesn't care if it's charging or just running from the charger....
Anyway, it has to be fixed.

same problem for me, but with some exception.
Im using Belkin mini car charger with 1A output. in car im turn on only GPS + 3g network. brightness set to 25%.
and with all of this settings battery slowly drain.
Also ive should say that battery not overheated through charging, but after 1% drained, phone says that "consumption is more that charger can give"...
Right now i think about other usb cable, not using original yet, may be inside it wire diameter too small to fit 1A.....

In fact i changed cable too... And it seems thats everything running ok even with waze on
And problem wasnt really overheating related since I have my car holder in front of air-condition grid... Its always under 30°C Best place for quadcore beast btw

I just use the data cable plugged into the USB adapter.
Keeps it topped nicely.

So not perfectly OK... I was driving long way again yesterday... With Sygic on, and my battery stuck at 71% didnt go down on charger, but didnt rise too.. In fact I started my trip at 80% Well it did the job in fact, but after 3hrs of driving it should be full as any other smartphone... :-\
There us something bad with charging policy in OneXs system... :-\

tombik said:
So not perfectly OK... I was driving long way again yesterday... With Sygic on, and my battery stuck at 71% didnt go down on charger, but didnt rise too.. In fact I started my trip at 80% Well it did the job in fact, but after 3hrs of driving it should be full as any other smartphone... :-\
There us something bad with charging policy in OneXs system... :-\
Click to expand...
Click to collapse
that's because it is using GPS (huge power hog), the screen is on (even bigger power hog) and then the CPU doing the calculations and rendering of the graphics, even with my desire hd it doesn't rise much when using sat nav. its a fact of life. the power consumed by the device is more than the charger can provide.
people have even reported that the mains charger isn't charging it quick enough whilst gaming for instance. (which doesn't surprise me)

Than it is fail of HTC... In fact my LGO2X (in most cases much worst than HTC) Handled it nicelly. HTC doesnt use potencial of charger. It takes only 600mA (top) while charger can deliver 1000mA.... And LG was able to use it....

I modified tiny generic usb car charger (5VDC 1A), so it allows faster charging. When opened up, D+ and D- pins were fed with some amount of electricity to allow iDevice charging, but I simply cut away traces leading to those pins and soldered them together. Phone reports "Charging (AC)". It really is standard method, but "surprisingly" Apple refused to follow standards and generic chargers do not work.

Hi,
i´m not really sure if this question is in the right place here.
After getting my HOX to replace my DHD i would like to know if i can use the DHD Car Charger (original HTC) for the HOX, too?
Thx...

Check out Avantek on Amazon. 2 out of its 5 ports are providing 2.4A, enough to charge your One X at full speed. An awesome product at an awesome price.

dsgoody said:
For the past 2 years on my old Desire I was using a homebrew in car charger I put together myself that would happily provide 1A, but my new One X seems a little more power hungry than that and when in car mode it seems to discharge slowly even though it's still plugged in.
Can anybody recommend anything suited for the One X's huge power drain (homebrew or off the shelf, I don't mind) other than HTC's expensive official one? I was looking at the Belkin ones floating about but they still only provide 1A.
Thanks, Dave.
Click to expand...
Click to collapse
Hi Dave,
I have read your post and i refer you to Amazon web services. You will definitely find there best charger for your devices which is compatible with your car.

[Q] MHL cable not charging

So i got an MHL cable to connect my 1X to my tv to play snes games with a bluetooth controller
It works fine, plus it looks great... BUT!
The phone says it's charging.. little red light, battery info says charging, but it looses charge as i use it.
Just finished playing a snes emulator for 30 mins. I had the phone in airplane mode, plus the screen brightness on the lowest setting.
After 30 mins it went from 85% to 72%!! plus it was really warn/hot.
Is this normal? Is it because the screen is still on on the 1X?
Does the media link thingy work better? does the screen turn off on the phone when using that?
Anyone else got an MHL cable? does your phone loose charge while using it?

Under heavy use, charging in USB mode (500mA limit) will usually still see the battery level decrease. Are you putting the auxiliary charger off a USB out from your TV/console? If so this will be the case.
I have only given my MHL adapter a quick try. Not really used it in anger yet. Can't say for sure what would happen if you used a wall charger instead of a USB one. No doubt the charge wouldn't drop, but would want to keep a very close eye on the temperature!
Are you rooted?

i think the mhl adapters (mine at least) has a maximum output, to the phone, of 500ma.
This means even if you plugin a wall charger @ 1A, then it will still only provide the phone 500ma of power max.
The rest of the power goes to actually powering the cable itself, in order to get the picture on the tv.
the reason it drains, is because the consumption of the screen/cpu is greater than the 500ma of power that the mhl adapter is providing.

Thanks for the reply.
My phone is not rooted. It's just a standard out of the box 1X.
Also, when using the MHL cable the phone was plugged into the mains charger & was still loosing charge! plus it was very warm..
Maybe i'll try to find some info about those charging dock/cradle things with the HDMI out. Maybe that be better???
lawrence750 said:
i think the mhl adapters (mine at least) has a maximum output, to the phone, of 500ma.
This means even if you plugin a wall charger @ 1A, then it will still only provide the phone 500ma of power max.
The rest of the power goes to actually powering the cable itself, in order to get the picture on the tv.
the reason it drains, is because the consumption of the screen/cpu is greater than the 500ma of power that the mhl adapter is providing.
Click to expand...
Click to collapse
Ah, ok.. that makes sense really.
I did think maybe there was more power being used than coming in... shame you can't turn the screen off on the 1X.

I think you have already done the sensible thing of trying airplane mode and min screen brightness. If it still heats up doing that on USB charging, then it's unlikely a different dock/adapter would see a reduction in drain & heat. I'd save your money there.
I only asked about root in case you could try Core Control to reduce heating, but never mind there.
Only thing I found that kept my phone cool when charging under heavy use (before I rooted it), was making sure I took the case off and I rest it on a granite drinks coaster I have! Draws the heat out of the phone very efficiently!

[Q] Google Nav - Draining faster than I can charge.

Getting ready for a cross-US trip next month and just noticed something with my GNex vs my 4S.
On my 4S attached to my 1A cig lighter charger from Belkin, I am able to charge the batter while navigating with GPS and screen on. This is using actual navigation, not the built in stuff for iOS5 and earlier.
I simply assumed the same would be true of my GNex but I noticed today that if I am using Google Nav with the screen on and connected to the same 1A Belkin charger, I lose about 1% every 20 minutes or so from my brief testing.
It doesn't appear to be overheating as the charging lights and symbols on the phone continue to show charging and the phone isn't all that hot. It's also not been using for any really long trips yet so it hasn't had a lot of time to get super hot if it's going to.
Just curious if this is common for the GNex while running only GPS with screen on.
I did some searching but the other complaints I found involved people also streaming music while using GPS nav.

People have reported this, and it makes sense if you're on a 1A charger, especially if you have a Verizon model connected to LTE. This is similar to the complaints that people can't charge on a 500mA USB 2.0 port while tethering LTE.
I personally don't notice it draining when I'm listening to music (stored, not streaming) and Navigating, although it's usually on trips of 45min at most and I have a GSM model. My battery seems to just hold or barely charge. I'm not sure of the exact output of my charger though. It's an AT&T branded accessory with a main cable, and a second full-sized USB port.

theoreticaljerk said:
Just curious if this is common for the GNex while running only GPS with screen on.
I did some searching but the other complaints I found involved people also streaming music while using GPS nav.
Click to expand...
Click to collapse
Yup, normal for the LTE models. It was actually one of the biggest complaints when it was initially released. Turn off LTE while using navigation.

martonikaj said:
People have reported this, and it makes sense if you're on a 1A charger, especially if you have a Verizon model connected to LTE. This is similar to the complaints that people can't charge on a 500mA USB 2.0 port while tethering LTE.
I personally don't notice it draining when I'm listening to music (stored, not streaming) and Navigating, although it's usually on trips of 45min at most and I have a GSM model. My battery seems to just hold or barely charge. I'm not sure of the exact output of my charger though. It's an AT&T branded accessory with a main cable, and a second full-sized USB port.
Click to expand...
Click to collapse
I believe that charge is 1a shared.
---------------------------------------------------------------
the next nexus needs an IR blaster. think of all the diabolical fun!

I haven't tried it on my Galaxy Nexus but his was certainly the same on my older Nexus S.

Verizon Nexus here and I have no problems in this regard.
I usually stream Pandora while using Google Maps Navigation and have a little speaker plugged into the USB port on the charger and it still charges the phone's battery.
LTE is on as well. Never turn it off.
Using the "MicroUSB Dual Vehicle Power Charger w/USB port" charger from Verizon.

Use Battery Monitor Widget and see if it says "AC" or "USB" when it's charging. You want to see AC or it won't be pulling enough juice. If you see USB, try a different cable. You can also force fast charging with the proper kernel. I use Franco, which has an option for it. That alone didn't seem to help, but I bought the Fast Charge app, which seemed to do the trick.
I just went through this myself on a 2 week motorcycle trip. I used a 3rd party GPS app the entire time, screen on, and streaming music. I had LTE on and I believe as long as my screen was set at around 65% or less I never had an issue.
So, yes it can be done. You just need to figure out the right setup. I did some research before my trip and from what I read, not all USB cables are the same. On my bike I had a low-profile dual USB charger.

90% is the USB cable.
It happens on my Galaxy Tab 10.1 with the default Samsung USB charger, when I connect it to my laptop. Then, if I browse on Internet with the tablet, my battery drains faster than charge, even if connected to the laptop with the USB.
The key is to discover if there is the USB or calbe problem with A output.

Kidd_Funkadelic said:
Use Battery Monitor Widget and see if it says "AC" or "USB" when it's charging. You want to see AC or it won't be pulling enough juice. If you see USB, try a different cable. You can also force fast charging with the proper kernel. I use Franco, which has an option for it. That alone didn't seem to help, but I bought the Fast Charge app, which seemed to do the trick.
I just went through this myself on a 2 week motorcycle trip. I used a 3rd party GPS app the entire time, screen on, and streaming music. I had LTE on and I believe as long as my screen was set at around 65% or less I never had an issue.
So, yes it can be done. You just need to figure out the right setup. I did some research before my trip and from what I read, not all USB cables are the same. On my bike I had a low-profile dual USB charger.
Click to expand...
Click to collapse
Sure enough, it was going to USB on the car charger. I unplugged the phone and went in the Franco Kernal Config and enabled USB Fast Charge. Plugged it back in and it recognized as AC and true enough, it charged my phone while using Nav so YAY!
Only problem I'm having is that on any reboot, even though it is still checked in the Franco Config, I have to uncheck USB Fast Charge and recheck it before plugging it into the charger for it to not go back to USB.

theoreticaljerk said:
Sure enough, it was going to USB on the car charger. I unplugged the phone and went in the Franco Kernal Config and enabled USB Fast Charge. Plugged it back in and it recognized as AC and true enough, it charged my phone while using Nav so YAY!
Only problem I'm having is that on any reboot, even though it is still checked in the Franco Config, I have to uncheck USB Fast Charge and recheck it before plugging it into the charger for it to not go back to USB.
Click to expand...
Click to collapse
Not sure why it's needed, but after I bought this:
https://play.google.com/store/apps/details?id=com.incredicontrol.fastchargewidget
I only needed to toggle the widget to fast once, and then my problems went away. Worth a few pennies prior to the trip...

I boggles the mind why this is set up this way in stock form..
why??
BTW to the OP, I just switched from a 4S, also had a 1amp charger that did the same as yours, that same charger on the Nexus won't charge the battery with GSM model. It drains about 3-5 % over around an hour commute, more if the sun is directly on it and it gets hot.
Still, why does it seem to force a .5 amp charge when the capability is there for more??

This is annoying that you have to grab up a custom kernel to do this. With JB I'm quite happy with the way the phone is stock and non-rooted but I guess I'm going to have to root and throw on a custom kernel after all.

If you like to solder cables, you can mod your car charger to register as a AC charger.
Give me a second, I'll find the thread.
/edit: http://forum.xda-developers.com/showthread.php?t=666482&page=5
Swiftkey'ed on my CM9 Galaxy Nexus

Battery drain issue with MHL

I'm getting rapid battery drain issues while using MHL adapter. I'm still trouble shooting, but have to experiment more. In the mean time, I was thinking maybe someone may have some suggestions.
I just transition from the HTV Evo 4G. Great phone, but it's showing its age. I have a job with a lot of dead time. With the Evo, and Cyangenmod, I would mirror the phone onto a 16" HDTV and watch Netflix, Hulu, NFL, Crackle, Plex, play games and so forth. I would also WiFi tether so I could use my tablet to do email, web browser, IM and so forth. I had the phone over clocked and used the performance gov. If had the phone connect to a charger, it would actually charge, albeit slowly back up to a fully charge This is with the screen that new shut off while pausing a media, but set to the lowest brightness.
The GN2, nowhere near the performance. If I WiFi tether and stream some media and mirror to the TV via the MHL adapter, I loose around 20% battery.per hour. I have power save on. I use my tablets power adapter with outputs 2.1mah instead of the 1 like the one that comes with GN2. I still have the screen set to lowest brightness.
From the settings menu for battery, the screen takes up the most juice. This is expected. But I also streamed content on phone while charging and it did build up a charge, albeit very slow.
I'm thinking it may be the MHL adapter itselt. I have the have USB charger connected to work. It's possible the phone doesn't put out enough power to work the MHL adapter. I'm not certain, but it's possible the MHL adapter is only doing a trickle charge. I had it plugged in, but phone screen off, and looks like it draining the battery. I want to run a longer test to confirm.
I purchase a cheap MHL from monoprice. I had to get the 11pin to 5pin adapter to use it. I'm not sure it is the MHL or the adapter that may cause issues.
In the mean time, I changed the kernals to Persus. Hoping to get better performance, or higher charging capablities. It's improved slightly, maybe 18% drain per hour. I'm just using CPU Mater, free version. I upped the CPU to 1.8ghz, but the free version does include anything for the battery. I don't really want to spend the $3 on SetCPU because I don't know if there gov has a lot towards the battery charging mods.
Any ideas or suggestions?

lovekeiiy said:
I'm getting rapid battery drain issues while using MHL adapter. I'm still trouble shooting, but have to experiment more. In the mean time, I was thinking maybe someone may have some suggestions.
I just transition from the HTV Evo 4G. Great phone, but it's showing its age. I have a job with a lot of dead time. With the Evo, and Cyangenmod, I would mirror the phone onto a 16" HDTV and watch Netflix, Hulu, NFL, Crackle, Plex, play games and so forth. I would also WiFi tether so I could use my tablet to do email, web browser, IM and so forth. I had the phone over clocked and used the performance gov. If had the phone connect to a charger, it would actually charge, albeit slowly back up to a fully charge This is with the screen that new shut off while pausing a media, but set to the lowest brightness.
The GN2, nowhere near the performance. If I WiFi tether and stream some media and mirror to the TV via the MHL adapter, I loose around 20% battery.per hour. I have power save on. I use my tablets power adapter with outputs 2.1mah instead of the 1 like the one that comes with GN2. I still have the screen set to lowest brightness.
From the settings menu for battery, the screen takes up the most juice. This is expected. But I also streamed content on phone while charging and it did build up a charge, albeit very slow.
I'm thinking it may be the MHL adapter itselt. I have the have USB charger connected to work. It's possible the phone doesn't put out enough power to work the MHL adapter. I'm not certain, but it's possible the MHL adapter is only doing a trickle charge. I had it plugged in, but phone screen off, and looks like it draining the battery. I want to run a longer test to confirm.
I purchase a cheap MHL from monoprice. I had to get the 11pin to 5pin adapter to use it. I'm not sure it is the MHL or the adapter that may cause issues.
In the mean time, I changed the kernals to Persus. Hoping to get better performance, or higher charging capablities. It's improved slightly, maybe 18% drain per hour. I'm just using CPU Mater, free version. I upped the CPU to 1.8ghz, but the free version does include anything for the battery. I don't really want to spend the $3 on SetCPU because I don't know if there gov has a lot towards the battery charging mods.
Any ideas or suggestions?
Click to expand...
Click to collapse
A. you are wrong, the charger that comes with our phone is 2 amps.
B. make sure you use the cable that came with the phone as it is rated for 2 amps, other cables will have too much resistance
C. it is normal for the mhl adapter to eat through your battery, maybe not as much as you are saying, but this phone uses the 11 pin mhl adapter which allows for FULL hd unlike older mhls/microhdmi ports so it is bound to murder your battery
D. I don't recommend you wirelessly tethering at the same time, my phone will eat through my battery like crazy with the screen turned off while tethering to play online games... this might be the root of your problem
Sent from my SPH-L900 using xda app-developers app

I think you're right on the cable. I tried it at home, using the charger and cable that came with the phone. Did an hour of Netflix, WiFi tethered the tablet. Battery drain...1%
I'll guess I need to get new USB cables since I like to keep extras in various locations, LOL.
Also, I miss read the chrager. I shouldn't read when I'm too tired. The good news, my tablets 2.1A charger should be only a very low risk of too much power. I was concerned with it, when I thought the charger was 1A
I realize what I'm doing is power drain, but it should be doable is the phone is on a charger. I'm not necessarily expecting it to charge back up, but I figure in the six to seven hours, a reasonable drain on the charger should be maybe 30%. This is only an assumption since I don't know how much the screen drains the battery.

lovekeiiy said:
I think you're right on the cable. I tried it at home, using the charger and cable that came with the phone. Did an hour of Netflix, WiFi tethered the tablet. Battery drain...1%
I'll guess I need to get new USB cables since I like to keep extras in various locations, LOL.
Also, I miss read the chrager. I shouldn't read when I'm too tired. The good news, my tablets 2.1A charger should be only a very low risk of too much power. I was concerned with it, when I thought the charger was 1A
I realize what I'm doing is power drain, but it should be doable is the phone is on a charger. I'm not necessarily expecting it to charge back up, but I figure in the six to seven hours, a reasonable drain on the charger should be maybe 30%. This is only an assumption since I don't know how much the screen drains the battery.
Click to expand...
Click to collapse
there is no risk of overcharging from amperage, the phone will take what it wants and not use the rest... you could have a 500 amp charger yet our phone would only use the 2 amps it's rated for. The problem comes from voltage if you have to much voltage then you overcharge.
you also fail to realize that the phone takes a lot of juice to convert it's image into a standard hdmi signal, it's the difference between you talking to yourself and you trying to make someone else understand you... the processor has to act as a graphics card, a sound card and its usual processing needs... the epic 4g touch ate just as much power per hour while on mhl yet it was only outputting 16:9 480p
as for getting more cables be careful and ensure they can handle the 2 amp drop
Sent from my SPH-L900 using xda app-developers app

Well, it seemed the biggest culprit was not the cable, but the charger. I actually brought the Samsung charger to work. I was only getting around 2% to 5% battery drain per hour. It was really low.
Unfortunately my ignorence on electricity is showing. I'm not seeing why such a dramatic difference between the Samsung and ASUS (TF700T tablet) chargers. Their readings are similar but not exact:
ASUS: Input: 100-240V 50/60Hz 0.5A, Output: 5V==2A or 15V==1.2A
Samsung: Input 100-240V 50/60Hz 0.35A, Output 5V ==2.0A
As for cables, I'm not sure where I can go to find good USB cables that work as well or better than the one that came with the phone. Usually I just go to monoprice, but that's where I got my other cables.

BlackBerry cables r usually more beefy than others since they are rated for data transfer. whenever flashing through Odin that's what I use never had a problem. assuming it's the same for charging. they usually only run like 5 bucks too
Sent from my SPH-L900 using xda app-developers app

goodpup420 said:
BlackBerry cables r usually more beefy than others since they are rated for data transfer. whenever flashing through Odin that's what I use never had a problem. assuming it's the same for charging. they usually only run like 5 bucks too
Sent from my SPH-L900 using xda app-developers app
Click to expand...
Click to collapse
they might be beefy, but still have ****ty materials. it all depends on the impedance of the cable... if you have a multimeter check the resistance on the cables and compare them to the stock
Sent from my SPH-L900 using xda app-developers app