Database Develop

Touch input bugs when charging, this is new to me.

This never used to happen, but I switched to a new charger (my car charger with a wall socket adapter) and now, when the phone is charging, any touch input to the screen gets..well..I suppose the best word is "Garbled". If I try and switch between homescreen pages, it will almost appear as if it is "struggling" to do so, like, it will shake and stutter and maybe get halfway to the new page but will stay on the first. When browsing, about eight of ten touches to anywhere on the screen will immediately send the page to magnifying glass mode.
This only occurs when charging, and only since I started using this new charger adapter. Any ideas?

hettbeans said:
This never used to happen, but I switched to a new charger (my car charger with a wall socket adapter) and now, when the phone is charging, any touch input to the screen gets..well..I suppose the best word is "Garbled". If I try and switch between homescreen pages, it will almost appear as if it is "struggling" to do so, like, it will shake and stutter and maybe get halfway to the new page but will stay on the first. When browsing, about eight of ten touches to anywhere on the screen will immediately send the page to magnifying glass mode.
This only occurs when charging, and only since I started using this new charger adapter. Any ideas?
Click to expand...
Click to collapse
I had a very similar problem but what i had was an USB AC adapter. I plugged the phone into the USB slot using the USB cable. Everything seems to be charging fine but then it starts to really screw up.
This did not occur when recharge from the laptop. So It was easy to conclude that there was some kind of problem with the charging unit compatibility.
Maybe you should also try a different charger.

Defective charger?

I bought a dock and wall charger from Amazon a few weeks ago for my Nexus S. The dock works fine, but when I plug my phone into the wall charger it makes the touchscreen do very odd things. It starts to get very laggy, and it also seems to misjudge where I touch or tap by a great distance. When I unplug my phone from this charger it works correctly again. This problem doesn't happen with the charger that came with the phone itself. Any idea why this could be happening?

The charger you bought is likely not sufficiently isolated from mains. Some part of the mains frequency might leak through and confuse the touch sensor.
Mind, I am not saying that it is not safe to use.

Sorry to come into your thread to ask a question.
But I have a question about charger too.
At home, I use the original charger that came with Nexus S. My battery seems to last very long.
At dorm, I use the so called Samsung charger I bought from eBay [it says it's legit and it sure looks like one] but battery doesn't seem to last as long as I would expect.
Settings and usage/variables are not exactly same but - for example, I got 22 hours with 40% left with home setting, while I would have to charge my phone usually after 6-8 hours at dorm.

cgi said:
The charger you bought is likely not sufficiently isolated from mains. Some part of the mains frequency might leak through and confuse the touch sensor.
Mind, I am not saying that it is not safe to use.
Click to expand...
Click to collapse
I'm thinking at this point I'm not going to risk it

johnkim0011 said:
At home, I use the original charger that came with Nexus S. My battery seems to last very long.
At dorm, I use the so called Samsung charger I bought from eBay [it says it's legit and it sure looks like one] but battery doesn't seem to last as long as I would expect.
Settings and usage/variables are not exactly same but - for example, I got 22 hours with 40% left with home setting, while I would have to charge my phone usually after 6-8 hours at dorm.
Click to expand...
Click to collapse
Try swapping the chargers to test. But I honestly think it is not the charger's fault, if your battery is full both times. More likely there are other circumstances, like bad reception, or your phone is searching for wlan all the time or whatever. Try going to the battery monitor in settings somewhere, there you can see what it using power. I can't direct you there exactly because I have a non-english language running.
joeystyles66 said:
I'm thinking at this point I'm not going to risk it
Click to expand...
Click to collapse
As I said, your charger very likely is just as safe as all the other Chinese electronic stuff. It is just not filtered/stabilized enough and so it confuses the touch screen. Keep in mind that the touch screen works by sensing a very small capacity change. Some overlaid interference can probably easily disturb it.

[Q] Salsa touch response works weird while charging

Hi,
I have this strange problem happening since yesterday on my brand new Salsa. When I put it on charging and leave it on a wooden table, the touch screen responds weird to my touch. The ring lock will not open all the way or shortcuts will work weird. The soft keys at the bottom too go absurd not responding or giving different options.
If I pick the handset (probably providing grounding), everything works normal thereafter. I'm using only the original charger provided with handset.
Additionally even the sound into my car's auxillary port is behaving as weird filtering or dimming the vocal frequencies but allowing the music to get through.
Does anyone know why this is happening?
Only incident to have caused this I guess is when the sales guy I went to plugged the phone onto a blackberry charger yesterday for a few seconds.
Could it have caused some damage to some internal part - diode or something that is leaking AC voltage onto the capacitive screen ? Can I have it repaired at HTC ?
Since it's not even a week old, I'm too distressed about the weirdness. PLEASE HELP!

does seem like it could of done some damage as blackberry's do take a lot more juice than the salsa, personally i would take it back and tell them about the problems you have had only since the dude abused the phone lol

I will surely be taking it back but want to confirm if its the problem with the phone or charger, because I do not see this problem when I charge from my laptops USB.
And I want to know what it is before I take it to them. Its much safer to find the problem and tell them rather than allowing them to figure it out themselves and in turn damage something else.
Thanks

your laptop will deal 5v 1a max before the computer will cut off the usb supply due to risk of overload, new blackberry chargers deal a lot more than that due to the juice the device needs to charge, almost like different laptop chargers the difference in the supply would kill your laptop, i don't have any problems with my device regardless of surface it is resting on.

I have the same problem
I have the same problem, but it was observed from the time of purchase. So do not worry and take the phone in hand))

Resolved
With some searching I resolved this problem or I can say I at least know why this is happening.
It is the charger that is faulty and not the handset. I changed it with another HTC charger I had and the problem disappeared. I figured the most logical explanation is what I read in one of the post elsewhere in this forum.
The charger could be faulty to be leaking some AC voltage along with the charging DC juice. This leaked voltage interferes with the sensitive capacitive touch screen. If we hold the handset in hand, we are providing a natural grounding and hence the problem disappears.
I personally would not like this to continue and so I'm going to take it back to my vendor for replacing the charger or if the need be, buy a new one.

Akinawa32 said:
I have the same problem, but it was observed from the time of purchase. So do not worry and take the phone in hand))
Click to expand...
Click to collapse
Try using another charger and see the difference. Hope you can get your charger repaired or replaced!
Take care.

this is due to a grounding problem or/and leaked ac current....

This problem occurs when your charger supplies more power than required by the phone to charge.The only solution for your prolem is changing your charger.
Sent from my HTC Salsa C510e using xda premium

I had once another problem, that my Salsa overheated (red-green blinking) when I charged it and my Wifi was on. Maybe a background-process could be responsible.

[Q] Unresponsive Screen Charging

I've been using third party chargers for a few days since my original email charger broke. However whenever I'm using the phone with a third party one the touchscreen is a bit less sensitive and responsive. However, I as soon as I take it out it behaves as normal. I wonder if this happens to anyone else? And also can it cause long lasting damage to the phone?

I too have the same problem.. its not that quite responsive when its charging.. Im using by the way the latest stock LC2.
I think this is inherent irregardless if your using the stock charger or any 3rd party charger for that matter. This issue is not on the chargers actually but on the 'laggyness' on the Note's screen when your using it (while it's charging).

iftheman said:
I've been using third party chargers for a few days since my original email charger broke. However whenever I'm using the phone with a third party one the touchscreen is a bit less sensitive and responsive. However, I as soon as I take it out it behaves as normal. I wonder if this happens to anyone else? And also can it cause long lasting damage to the phone?
Click to expand...
Click to collapse
+1 Also observed this when charging from a friend's HTC charger, also read a thread about this a while ago, although there was no definitive answer from what I read, just people reporting the issue...
Sorry mate, no solution from me, but you can be sure you're not the only one experiencing this issue.
I'd imagine it has something to do with the fact that the charger may not be able to supply the power that the larger Note battery needs...
LE: No, charging with its original charger or my S2 charger, or even my Galaxy Ace's charger does not make it less responsive. HTC charger...does

Used to have same problem with iphone too. Cheap Chinese chargers have same effect.
Sent from my GT-N7000 using XDA

I think from a simple deduction, when your charging, your actually charging the phone's screen itself. Now this maybe wrong but I've read somewhere that what's mainly holding the power on all touchscreen phone is the actual screen itself.
So if your charging the phone, your actually charging the screen and if your using the phone(naturally using the screen itself) you are in effect disturbing the charge because the power it needs to fill up to recharge the phone is being use also to discharge it (thru constantly using the phone itself.)

This is an issue with many android devices. And some do it even with the OEM charger. I've personally experienced it on 3-4 of my phones.
Sent from my GT-N7000 using Tapatalk 2

This happened on my HTC EVO even with the factory charger.
Sent from my GT-N7000

I think if I'm not mistaken.. this all happens to all touchscreens out there, irregardless on what brand or make/model your using.

letters_to_cleo said:
I think from a simple deduction, when your charging, your actually charging the phone's screen itself. Now this maybe wrong but I've read somewhere that what's mainly holding the power on all touchscreen phone is the actual screen itself.
So if your charging the phone, your actually charging the screen and if your using the phone(naturally using the screen itself) you are in effect disturbing the charge because the power it needs to fill up to recharge the phone is being use also to discharge it (thru constantly using the phone itself.)
Click to expand...
Click to collapse
Sorry, but this is bull****. Phones have batteries like any other portable device, and this is what is charged.
I am speculating entirely but it is most likely that the voltage coming in from the USB cable is ****ing with however the screen detects your finger (i.e, via capacitive sensing). More speculating but I assume that having some sort of electric field near a capacitive screen will cause issues in detection (I've had the same effect happen with the capacitive buttons near a plasma ball; they caused false detections of the button being pushed). Then again, the phone is full of electronics + radio transmitter so I might be wrong.
Basically, buy a better cable, or it might just be a general fault with this sort of thing.

My HD2's screen used to go crazy when I charged it with a Chinese charger, like random screen touches at warp speed. If I used a well made charger, all was well.
The touch screen did eventually die on the HD2, and I had to send it back for repair under warranty. Now, if I get any jittering/non-responsive screen behaviour, I ditch the charger.

I've experienced this too, but it is not necessarily the charger, but the amount of power delivered by the charger.
I used to live in a rural area and the power supply was bad. We only got about 150V through the wall socket instead of the full 240V.
Using my stock charger on my Galaxy S, the screen was laggy, but if I used the same charger on a good power outlet in town, it was fine.
I've also used cheap no name chargers that are laggy even on a "good" wall socket.

Knifa said:
Sorry, but this is bull****. Phones have batteries like any other portable device, and this is what is charged.
I am speculating entirely but it is most likely that the voltage coming in from the USB cable is ****ing with however the screen detects your finger (i.e, via capacitive sensing). More speculating but I assume that having some sort of electric field near a capacitive screen will cause issues in detection (I've had the same effect happen with the capacitive buttons near a plasma ball; they caused false detections of the button being pushed). Then again, the phone is full of electronics + radio transmitter so I might be wrong.
Basically, buy a better cable, or it might just be a general fault with this sort of thing.
Click to expand...
Click to collapse
speculation and assumptions are just cousins..
Anyway, you are talking about capacitive sensing and stuffs. Capacitives and resistives only apply to touchscreens and none on qwerty phones. Your 'speculation' about electric fields on capacitive screens are actually correct, but I would like to go back to what I said again, the phone draws power from the screen itself. So when you touch the screen (to perform gestures on it), you are actually drawing out power from the phone. your finger performs a conductance to the screen. Your say of 'false detection of the button being pushed' are actually magnetic fields that is try extrapolate from your fingers (as a magnet) to the screen, thereby causing a marginal errors on the screen's predefine calibration.
That is why you may have notice that whenever you have your phone charge, and your actually using for example to type a message on your phone, you can clearly see a margin of seconds in delay when letters will be registered to your message.
Try to simulate that with the phone charge and when it's not. Clearly you will see what I mean.
this is what the word- ferromagnetism is all about.
anyway, I won't delved with that as it's in the realm of physics already.
cheers

+1
Sent from Tapatalk

Had this same problem on my Dell Streak5 when using a non stock charger. The fix at that time was to purchase the small longitudinal magnets that are made to surround and clamp onto the usb cable. I had to place two on the end closest to the Streak. Corrected 80-90% of the problem.
I got the magnets at Radio Shack. It's been nearly two years ago, but I think I paid about $6 for a pack of 2.
kraz

richlum said:
I've experienced this too, but it is not necessarily the charger, but the amount of power delivered by the charger.
I used to live in a rural area and the power supply was bad. We only got about 150V through the wall socket instead of the full 240V.
Using my stock charger on my Galaxy S, the screen was laggy, but if I used the same charger on a good power outlet in town, it was fine.
I've also used cheap no name chargers that are laggy even on a "good" wall socket.
Click to expand...
Click to collapse
What? Only 150V? I don't believe it. How then other things work?
Sent from my GT-N7000 using Tapatalk

Well I was told it was 150V.
It took a lot longer to charge my phone or laptop there than it did at work in town (using the same charger in both locations), so there was definitely a lower current coming through.

Solved irresponsive screen when charging
After eight months trying to find a solution, today I have tried with my iphone 4 charger and my Kindle cable and, for the first time,I am able to write properly, as I weren't plugged. I have to say I don't like this device, it's very slow and the screen goes green almost everyday.

NICE GUY

Well this problem is not because of screen quality. Its all about with the wavelength of current supply and change in frequency . Its create some magnetic field and makes your screen behave weird. When we get proper ellectric supply we don't face such problems. Also cheap chargers don't follow quality levels and they generate uneven frequency thats why flux created by them makes screen behave weird.

This happened to my old HTC Incredible S (Vivo).
It only happened when the 5V charger was lower than 1A.
Quite strange.
But you could check if your charger has at least a 1A output.
Should be on there somewhere.
The stock Samsung chargers are 1A as well I believe.
Cheers,
Daan

Keyboard dock acting up

Hey, this morning I had the weirdest problem with my dock, despite rarely getting any disconnects as bad as other people have.
I am running the latest firmware from December on the tablet and the dock, but I suddenly got a message from ASUS Update Service that a MobileDock firmware update is available. I decided to go ahead and click OK but it simply did nothing. It gave me an error after some loading time and the dock kept on working but the message doesn't disappear.
Also, despite charging my dock last night it is now at 6% on its indicator and it doesn't appear to be moving. Is it FUBAR? Should I just go to a service shop working with ASUS with my warranty? (I'm from Eastern Europe so no retailer shipping back, lol)

After a full discharge and charge of the dock the problem still persists. After plugging it in it went green light pretty fast but showed that it was only charged up to 70%. On the next day after barely any use, the dock showed 30% and after letting it discharge some more it still gets stuck at 6%. Also, it appears to be charging the tablet with less power.
I'm kinda ceratin that it is a software issue. Is it possible to somehow "reset" the dock's software? Reset the tablet? I really don't want to wipe it full, because I CBA to restore everything on it, but if I give it to the shop it will take a full month or 2 before they decide to give it back. Any idea on how I might go about "resetting" a dock?
Edit: Just to clarify, I stopped getting the update message from Asus to update the MobileDock firmware. I though that might be the culprit (attempted and failed "update") but the dock was at 6% even before attempting the update...
FINAL EDIT: I fixed it by doing a factory reset. God knows what went wrong with the battery sensor software. ASUS should seriously do something about their software.
Sent from my K00C using xda app-developers app

Sorry for the thread necro and the constant self-communication but the dock is doing the same thing again. No amount of coldbooting while docked is helping. Any help besides the good ol' wipe data? I can do it, of course, but it's getting kind of old. Isn't there a software fix to "reset" the dock's firmware or something?

hitmancho said:
Sorry for the thread necro and the constant self-communication but the dock is doing the same thing again. No amount of coldbooting while docked is helping. Any help besides the good ol' wipe data? I can do it, of course, but it's getting kind of old. Isn't there a software fix to "reset" the dock's firmware or something?
Click to expand...
Click to collapse
I don't know what to suggest..... Maybe use the Asus backup program so it is not too hard to restore your app data. Sounds like it needs another factory reset but I have no idea why it is happening.....

hitmancho said:
Sorry for the thread necro and the constant self-communication but the dock is doing the same thing again. No amount of coldbooting while docked is helping. Any help besides the good ol' wipe data? I can do it, of course, but it's getting kind of old. Isn't there a software fix to "reset" the dock's firmware or something?
Click to expand...
Click to collapse
Same problem here; RMA'd it, they sent it back doing the EXACT SAME THING, won't even charge on the charger disconnected from the tablet; factory data reset won't fix it.
RMA'ing it again, this time at their expense for shipping; and it's being "investgated for unrepairable"

hitmancho said:
Sorry for the thread necro and the constant self-communication but the dock is doing the same thing again. No amount of coldbooting while docked is helping. Any help besides the good ol' wipe data? I can do it, of course, but it's getting kind of old. Isn't there a software fix to "reset" the dock's firmware or something?
Click to expand...
Click to collapse
My first kb did the same thing: Erratic charge, constant update notification failing and many disconnects. I think it is a lost cause. Send it in and hope for a replacement that is less buggy
Sent from my K00C using Tapatalk

Welp, after a couple of resets in different circumstances I finally decided to reset the tablet while it was docked AND plugged into a power outlet.
It actually worked and didn't attempt to fail an update during bootup I don't know how long this will last, hope I helped others...
Sent from my K00C using xda app-developers app

Thanks for that! Did you do a factory reset or a simple reboot with the unit attached to power?
I did the latter and at least it seems to have fixed the erratic battery stats also don't get the upgrade notification that fails. Sometimes the simplest things have wonderous results...
Sent from my K00C using Tapatalk

berndblb said:
Thanks for that! Did you do a factory reset or a simple reboot with the unit attached to power?
I did the latter and at least it seems to have fixed the erratic battery stats also don't get the upgrade notification that fails. Sometimes the simplest things have wonderous results...
Sent from my K00C using Tapatalk
Click to expand...
Click to collapse
Glad that worked for you guys, it did not for me. I tried it four times, since I hadn't sent my dock back in yet for the second RMA. Mine won't even charge on just th ac adapter though, so definitely something else is amiss in my case.

Keyboard problems
zaelin said:
Glad that worked for you guys, it did not for me. I tried it four times, since I hadn't sent my dock back in yet for the second RMA. Mine won't even charge on just th ac adapter though, so definitely something else is amiss in my case.
Click to expand...
Click to collapse
Hi there,
Same problem here as Hitmancho and Zaelin: Cannot charge the TF701 through the dock and dock appears to be draining the tablet. In the beginning it worked fine - after doing a full wipe and installing CROMi-X 6.1- but then suddenly it started this erratic behavior. However I think it is a hardware problem since I actually hear the keyboard clicking when the charger is on AND the tablet is in its slot. Next to that the keyboard gets exceptionally hot just next to the slot connector which connects the keyboard and the tablet.
Does any of you experience the same problem ? And - if possible - how did you fix it ?

JOTX10 said:
Hi there,
Same problem here as Hitmancho and Zaelin: Cannot charge the TF701 through the dock and dock appears to be draining the tablet. In the beginning it worked fine - after doing a full wipe and installing CROMi-X 6.1- but then suddenly it started this erratic behavior. However I think it is a hardware problem since I actually hear the keyboard clicking when the charger is on AND the tablet is in its slot. Next to that the keyboard gets exceptionally hot just next to the slot connector which connects the keyboard and the tablet.
Does any of you experience the same problem ? And - if possible - how did you fix it ?
Click to expand...
Click to collapse
Does the tablet charge when the power is plugged into the docked tablet (i.e. power in the dock slot)? I didn't quite understand what you meant by not being able to charge the tablet through the dock.
My dock heats up when in use (or charging) as well, but on the bottom. It's mildly hot if that description works :laugh:
But if the clicking is loud when you've plugged both dock and tablet in the power then you might have a serious issue. I assume you aren't touching anything while it is clicking. If so, you should contact ASUS support. Clicking out of nowhere sounds scary...

Keyboard problems
hitmancho said:
Does the tablet charge when the power is plugged into the docked tablet (i.e. power in the dock slot)? I didn't quite understand what you meant by not being able to charge the tablet through the dock.
My dock heats up when in use (or charging) as well, but on the bottom. It's mildly hot if that description works :laugh:
But if the clicking is loud when you've plugged both dock and tablet in the power then you might have a serious issue. I assume you aren't touching anything while it is clicking. If so, you should contact ASUS support. Clicking out of nowhere sounds scary...
Click to expand...
Click to collapse
Hi Hitmancho,
No the tablet is not charged any longer when connected to the keyboard. And when I connect the charger to the keyboard nothing happens, i.e. the tablet is still normally drained (or at a slightly higher rate) and the keyboard stays at 6% even though it is fully charged. However if you are in a silent environment you can hear a distinctive clicking at the spot where the keyboard connector for the tablet is located.
And just before this problem occured last week the keyboard was exceptionally hot at that same spot.
I am not afraid though that I will be electocuted or that the keyboard will explode - I am an electrical engineer by training - but I took - of course - the precaution not to connect the charger to the keyboard anymore. I now charge the tablet directly which is a nuisance but has to be done every 2 hours or so.
What I think is the problem is that the charger circuit in the keyboard is faulty and generates a short circuit every second or so and that this is causing the heating and causing the tablet to think it is dealing with a wrong version of keyboard software and wants to update it.
Regards,
JOTX10 from the Netherlands

JOTX10 said:
Hi Hitmancho,
No the tablet is not charged any longer when connected to the keyboard. And when I connect the charger to the keyboard nothing happens, i.e. the tablet is still normally drained (or at a slightly higher rate) and the keyboard stays at 6% even though it is fully charged. However if you are in a silent environment you can hear a distinctive clicking at the spot where the keyboard connector for the tablet is located.
And just before this problem occured last week the keyboard was exceptionally hot at that same spot.
I am not afraid though that I will be electocuted or that the keyboard will explode - I am an electrical engineer by training - but I took - of course - the precaution not to connect the charger to the keyboard anymore. I now charge the tablet directly which is a nuisance but has to be done every 2 hours or so.
What I think is the problem is that the charger circuit in the keyboard is faulty and generates a short circuit every second or so and that this is causing the heating and causing the tablet to think it is dealing with a wrong version of keyboard software and wants to update it.
Regards,
JOTX10 from the Netherlands
Click to expand...
Click to collapse
If it is still under warranty, send it in. Asus fixed mine - well at leat the loose hinge and charging/firmware update problem. Still disconnects from the dock SD when moving the screen, but I can live with that...

JOTX10, I meant to ask if the clicking is there WITHOUT any physical contact with the tablet
But yeah, I doubt it's going to be able to explode or anything drastic like that. As berndblb said - if you are under warranty give it back for repair/replacement. Sounds damaged to me.

RMA-ed the keyboard
berndblb said:
If it is still under warranty, send it in. Asus fixed mine - well at leat the loose hinge and charging/firmware update problem. Still disconnects from the dock SD when moving the screen, but I can live with that...
Click to expand...
Click to collapse
Hi Berndblb,
I RMA-ed the keyboard - I am still under warranty - and hopefully my assessment that it is just the keyboard is correct since I just RMA-ed the keyboard not the tablet since then I would be in big trouble without it. Did you send in the keyboard+tablet or just the keyboard as well ?
Regards,
JOTX10

JOTX10 said:
Hi Berndblb,
I RMA-ed the keyboard - I am still under warranty - and hopefully my assessment that it is just the keyboard is correct since I just RMA-ed the keyboard not the tablet since then I would be in big trouble without it. Did you send in the keyboard+tablet or just the keyboard as well ?
Regards,
JOTX10
Click to expand...
Click to collapse
Just the keyboard. Good luck!