Develop Bugs

[Q] Dodgy phone or dodgy car charger?

Hey guys, just wondering if anyone else had a similar problem..
Everytime I connect a car charger, it charges for a second then disconnects itself, the charger is still plugged in, and the engine is running. The red light on the charger is on too. I'm not saying this is a ROM problem or anything at all, but its the second charger I've had that does this, I don't suppose anybody knows a fix if it happens on other devices too?

Is this an official HTC charger?
I know it sounds silly, but most cheap unbranded car chargers cause all sorts of problems. It's usually that they don't short the two data pins, so that the phone thinks it's plugged into a PC. It will then only charge at half rate (500mA) in line with usb standards.
Also, the charger may not even be able to handle a 500mA output, which would suggest why your phones sees the charger, measures the output, sees it as insufficient, and stops the charging. Is there a sticker on the charger starting current output? They can still be misleading though.
An official HTC car charger (just like the mains wall charger) will have it's data pins sorted out. The phone will detect this, and switch to mains charging mode, and draw the full 1000mA. You may have noticed that your phone will charge twice as fast off a mains wall charger than it will from being plugged into a computers usb port.
Trust me I've thrown out about 3 of the cheap ones! Even charging at 500mA, your phone will still not be getting enough juice to do google maps navigation with GPS.
Hope I've helped.
Sent from my HTC Desire using XDA Premium App

It's a cheap eBay one, but I've bought from the company in the past...when I had an iPhone And it worked perfectly. The first charger had a label saying it's max was 500mA. That lasted about 20 minutes..Need it so much more recently because of my battery drain problem http://forum.xda-developers.com/showthread.php?t=996938.
I had no idea HTC sold official ones (seems I lack common sense), will give them a go, at least then I'll get a decent warranty if it doesn't work...

jimster4389 said:
It's a cheap eBay one, but I've bought from the company in the past...when I had an iPhone And it worked perfectly. The first charger had a label saying it's max was 500mA. That lasted about 20 minutes..Need it so much more recently because of my battery drain problem http://forum.xda-developers.com/showthread.php?t=996938.
I had no idea HTC sold official ones (seems I lack common sense), will give them a go, at least then I'll get a decent warranty if it doesn't work...
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Click to collapse
If its a USB charger try a different USB lead. When my Desire arrived brand new the lead would only work properly when I bent the lead round the back of the phone otherwise it would start a charge (LED would light up red, phone says charging) but the battery % would never get any higher. Bought a new official HTC lead and problem solved.

Evo charging lag?

This isn't a problem but more of just a general question. So does anyone else experience your phone kinda lagging or having screen sensitivity issues (have to press hard on screen to scroll) while having the phone charge? This is like a 50/50 thing sometimes it does this sometimes not. So post your experiences with this
Sent from my PC36100 using XDA Premium App

Yes indeed. In my case, it's caused by my HTC USB cable that came with the phone. When I use the charger from my old LG ENV3, i never get that problem at all. As soon as I switch to the HTC cable, it's nearly un-usable whilst plugged in. It's odd, because the HTC cable works fine for charging and transferring data, so I don't know, but there's something wonky with it.

Hmm interesting
Sent from my PC36100 using XDA Premium App

I've always wondered if I was the only one...

joehunni said:
I've always wondered if I was the only one...
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Click to collapse
Nope, you're not. It can certainly become rather annoying if you're trying to use your phone while it's charging.

Yea, using swype is IMPOSSIBLE when plugged in.

I never used to have this problem before, so I wonder if this is something that comes with age of the phone. I've run all kinds of roms/kernels and never had this issue until maybe a month ago. But I think I've successfully narrowed it down.
You need a charger that outputs 5v at 1000mA. Any more or less and you'll get the wonky response. I have an 800mA and a 1.5A charger at 5v and I get the laggy response. And I took it a step further and noticed that I get maximum charging speed (regardless of kernel, I've tried stock and custom/SBC kernels) with a 28/24 AWG or 24/24 AWG micro USB cable. If you still rock the stock HTC charger/cable combo you should be golden.

adamantypants said:
I never used to have this problem before, so I wonder if this is something that comes with age of the phone. I've run all kinds of roms/kernels and never had this issue until maybe a month ago. But I think I've successfully narrowed it down.
You need a charger that outputs 5v at 1000mA. Any more or less and you'll get the wonky response. I have an 800mA and a 1.5A charger at 5v and I get the laggy response. And I took it a step further and noticed that I get maximum charging speed (regardless of kernel, I've tried stock and custom/SBC kernels) with a 28/24 AWG or 24/24 AWG micro USB cable. If you still rock the stock HTC charger/cable combo you should be golden.
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Click to collapse
i don't think its from age of the phone because i just got my phone in december (hw 0004) and i am still using the stock htc charger/cable. so idk its a mystery. nice work finding all that out tho its good to know that i am not the only person who experiences this haha.

I only get the problem when I'm plugged into A/C power, but not when I'm plugged into the D/C car charger... I think it has something to do with how the outlet is grounded. Maybe the touchscreen gets confused by getting grounded through the charging port rather than through your body. I'm basically making this up based on hazy memories from an E&M class I took about 8 years ago, but I think it's close. Anybody with any actual knowledge care to correct me?

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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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 =(
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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... :-\
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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.

[BUG]Discovered new bug - multi touch when charging

anyone experiencing this on their one x
I have attempted to record this and uploaded to youtube. In order to recreate this for yourself, make sure haptic feedback is enabled for your lock screen.
watch video from 0:22 onwards as I was struggling to record and hold the phone at the same time.
you will also have to enable show touches in development options in settings as well as keeping your charger plugged in as this is when it only happens if your charger is plugged in (mains charger the white one that the one x comes with)
here is the link
http://www.youtube.com/watch?v=d5paZpvqKck&feature=youtu.be
I have not tested this with usb charging from pc/laptop
It happens when you try to unlock your lockscreen to fast, or pressing screen to fast in different areas.
I always prefer my phones to have show touch enabled so I can see where I'm touching if I'm browsing etc. and this is the only way I discovered this bug
EDIT: it turns out the default white charger that comes in the box of the HTC one x is causing the problem, if I use any other mains charger I am not having these issues. very weird!!

Checked mine and i cannot confirm it. Tho im running cm9.

could be kernel related, did you try with charger plugged in and charging the phone with show touch enabled and lockscreen enabled?

Your video made me dizzy
Don't use your phone plugged in?
BTW, I don't have that issue on my One X, at all.
Sent from my HTC_Amaze_4G using xda premium

It's not new, It's been mentioned on here a few times before, I've had this bug since day one (ROM/Kernel makes no difference btw, it's a hardware problem I believe).
Strangely, it only happens when using the wall charger that came with the device, charging via USB doesn't seem to screw up the touchscreen.

Mine also is quite difficult to use sometimes when charging, fortunately the HTC wall charger is by my bed and only used when I am asleep, the others I use in general while charging are older HTC devices charges or BB and the issue doesn't occur IIRC.

Happens on my HTC One X too. Also happend on my LG Optimus 2X. Too bad :-/

yep defo a charger problem

First time I've seen it with official HTC charger, but a known issue with cheap eBay chargers. Looks like HTC's build quality issues have spread to peripherals.
It happens when the rectifier and dc smoothing in the charger isn't very good, and the phone is receiving lots of dc ripple or 'noise'.
http://www.youtube.com/watch?v=DpDyMykRH9M&feature=youtube_gdata_player
Edit: Serious afterthought guys, noisy chargers also cause battery heating issues. All those with this issue ditch your HTC charger immediately. You can't afford to damage this battery. Had a cheap Hong Kong charger on my Desire S once. It cooked my battery.
Does anyone have access to a CRO? Perhaps a video of the output of this charger to HTC would be in order.
Sent from my HTC One X using xda premium

this is a serious issue,
im now using a nokia charger which is 5V and 1200mv which i used to use on my n97, issue is now gone,
weird that htc are letting this bad quality through

I think I'm having the same issue as what's described here. When my One X is charging via the charger it came with, sometimes it'll get way hotter than it should, and the screen becomes very slow to respond or it has issues detecting touches. It's never happened when charging from my PC, and is briefly resolved by a reboot.
Haven't yet tried a different AC charger though. I honestly thought it had something to do with the heat. I've been turning my phone off at nights when it's charging on AC because it was getting hot.

Hi,
I found a similar issue when my One X is plugged into a Nokia charger that came with N900.
When plugged, the touch screen seems to be defaulting to the left side and any touch on the other side of the screen causes a multi touch (or whatever you wanna call it). The problem does not occur when plugged into the cable that came with the One X (nor USB neither electric grid).
The video can describe better:
watch?v=Smr2-O92EzM
(the forum does not allow me to post links yet, so just copy & paste to youtube - thanks)
The phone is a week old, not rooted yet.
Not looking for help, just thought this might help any investigation.
Cheers

Use the official charger provided with the One X. Crudely put, the charge is "leaking" across the touchscreen.
My wife is unable to use her phone (Samsung GS3), unresponsive to touch, when using my HTC charger. But works fine using her charger.

I am facing this issue too. I was using a third party charger. Decided to abandon it for the sake of the battery.
Sent from my HTC One X using Tapatalk 2

I get this with every charger I use when I plug it in at work. Its caused by a dirty electrical outlet. Mostly found in old buildings and old outlets. If people actually use the search function in this forum you would know this....
Sent from my HTC One X using xda app-developers app

Touch screen issues while charging affecting all ZUK Z2's?

I was about to buy this phone, but then i saw this: https://youtu.be/l-MmWqNrCH4?t=195
Can anyone confirm there are touch screen issues when the AC charger is connected?
This seems to be pretty big hardware issue and i wonder if it does affect all Zuk Z2's...
Can anyone test this please?
Multitouch test app: https://play.google.com/store/apps/details?id=com.the511plus.MultiTouchTester&hl=en

Depends on the charger and socket output.
Like when I'm using it with qc3 charger plugged into 220v output socket, there is no such issue, but when plugged into 110v (tried on train's socket), you can see that problem.
This problem is basically with every phone.

Indian Lenovo Z2 Plus here on Stock Nougat
No issues here (stock charger on 220V AC)

Oh well, maybe i have to reconsider it then

Anybody using the device had this issue(Ghost touch)?

k3lcior said:
I was about to buy this phone, but then i saw this: https://youtu.be/l-MmWqNrCH4?t=195
Can anyone confirm there are touch screen issues when the AC charger is connected?
This seems to be pretty big hardware issue and i wonder if it does affect all Zuk Z2's...
Can anyone test this please?
Multitouch test app: https://play.google.com/store/apps/details?id=com.the511plus.MultiTouchTester&hl=en
Click to expand...
Click to collapse
This is common for all Zuk Z2 devices.
Its a issue with the charger & not with the device as such. Try using any other good quality charger, this will not happen or if you want to be sure try charging with powerbank you won't face the ghost touch.

try different socket in different location. sometimes ground wire has problem in home which leads to this problem.

I recently bought the phone, and yes, I have experienced the issue quite a few times. But, only a few times. Most of the time, device touchpad works normally while charging. I think thr problem is with the old sockets. I use Stock provided charger. I have heard that it's common in many phones, so I'm ready to ignore it. Because anyways phone should not be used while charging.

With reference to my previous message, I noticed now that the device shows ghost touches while charging, only when device is charging at max speed and is quite hot. While charging, when the phone was between 50%-80%, it had become quite hot (Not too much though), and it gave me ghost touches quite a few times. I think device charges at it's max during these percentage. But when the phone crossed 85%, the device started getting a bit cooler, and I didn't experience the ghost touches at all.

Issue solved
Hi buddy I had the same issue .one day while I connect my z2 with laptop I see that its charging but no touch issue then I realised it need low power charger than that given charger .After that I use my tablet's 5v 1amp .It works nice and it take 2 and half hrs to fully charge .After that I did not face any touch issue.Thats why they does not provide fast charger.I brought my z2 6/08/2017 from flipkart

is this problem with charger, i belive! i swap charger and job god now!

juniofdm said:
is this problem with charger, i belive! i swap charger and job god now!
Click to expand...
Click to collapse
Which charger u using now ?
Is it a normal one or fast one ?
Sent from my ZUK Z2132 using Tapatalk

This is not a phone issue. Lenovo is selling **** quality chargers and cables. If you happen to know (https://www.amazon.com/gp/profile/amzn1.account.AFLICGQRF6BRJGH2RRD4VGMB47ZA) this guy then see his recommendations and buy a good charger or you might even fry your device. This is very dangerous. Shame on Lenovo.

developer01 said:
Which charger u using now ?
Is it a normal one or fast one ?
Sent from my ZUK Z2132 using Tapatalk
Click to expand...
Click to collapse
I'm using motorola original fast charger of cellphone of my wife.

I'm also facing this problem. I have divorced parents, the charger that came in the box was a US adapter that I couldn't use. My brother used to have a ZUK z1 and I use his stock charger Together with the original Z2 charger. That one works well. I bought a Blitzwolf USB type C cable, a Tiegem QC3.0 cable and a wish.com charger with great reviews supporting Qualcomm QC3.0, but I recently discovered that zuk z2 uses a different type of fast charging. On the blitzwolf and Tiegem cable i have ghost touches and the phone gets very laggy, does anyone have recommendations? thanks in advance

How will an iPhone charger work.

My proposed solution
I bought this mobile few days back and since then I also have realised about this issue. This isn't ghost touch but the touchscreen becomes ultra reactive with higher input.
I used several apps and found another thing that if any charger inputs anything more than 1.4 amps, the mobile's screen becomes ultra reactive. But if the charger inputs upto 1.3 amps, it is ok. I keep using a charger that gives max output of upto 1.3 amps and I can even play games easily without any issue.
To measure the amps, I use app from play store which is free called Ampere. I am nowhere related to this app, you are most welcome to try this method out.
Regards,
NK

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