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
Viper os
Related
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
Hi Guys
When i connect the charger, the screen becomes substantially less responsive and jerky
has anyone faced this problem ? is it software or hardware so that I can get it replaced
Thanks
hi,
it seems i am encountering that also spefs below for my rom
RADLOUNI said:
Hi Guys
When i connect the charger, the screen becomes substantially less responsive and jerky
has anyone faced this problem ? is it software or hardware so that I can get it replaced
Thanks
Click to expand...
Click to collapse
Hi,
Iam from UAE also, Al Ain.
Where you bought and when?
Is it made in Taiwan or China?
Hey.. I guess that's your first charging.. phone will do well if you don't mess with your phone at the first charge and don't run any applications.. after few charges the phone tends to cool down gradually.. my phone yesterday boomed till 55C and I've encountered the same problem as you regarding screen.. But hold on for few days.. ( hopefully it'll come out good )
---------- Post added at 05:50 PM ---------- Previous post was at 05:49 PM ----------
and just noticed today my phone hit all time low 34C
I also has this problem, had my phone for two days and got the same error this morning when using it during charging.. there better be a fix for this asap or im returning this and going back to my galaxy nexus
skr_xd said:
Hi,
Iam from UAE also, Al Ain.
Where you bought and when?
Is it made in Taiwan or China?
Click to expand...
Click to collapse
Etisalat business centre
Taiwan
I have seen this many times with my old Sensation. It would do that if you plugged it into a power source with the wrong voltage or amps. I bought a travel charger with a USB plug on it and whenever I connected my Sensation it would go berserk, unresponsive to touch and screen flickering and jerking.
Sent from my HTC One X using xda premium
I don't think its necessarily HTC guys. My SGS has done it since day one as well.. its a nightmare browsing/texting when plugged in, it even once set an alarm by itself thinking I was touching the screen when it was just on my bedside table. And spammed my ex with the letter m and sent it to her on Whatsapp haha
Known to happen if you use a faulty or unofficial cheap charger. Tried using a different charger?
http://www.youtube.com/watch?v=DpDyMykRH9M&feature=youtube_gdata_player
Sent from my HTC One X using xda premium
I had the same issue with my Motorola Milestone (Droid). Actually the whole casing felt to be slightly statically charged when connected to the charger.
This might be solved by using a different adapter, but it could also be the general electric layout of the room/house, which can cause non-neutral charges on the "ground" side of the charger. Static charges seriously mess with a capacitive screen.
I don't have the problem with my One X in the Netherlands.
Well this is intresting as i have the same problem. i will need to try another charger as i have the same problem.
Well i have tried two HTC chargers, tried 3 diffrent wall sockets and 3 USB cables all show the same problem. Too me it looks like the screen is not grounded. Much like my HTC sensation which need a little bit of alaminuim film to ground correctly.
wnp_79 said:
Known to happen if you use a faulty or unofficial cheap charger. Tried using a different charger?
http://www.youtube.com/watch?v=DpDyMykRH9M&feature=youtube_gdata_player
Sent from my HTC One X using xda premium
Click to expand...
Click to collapse
i have noticed this on desire HD - same problem - with a unofficial cheap charger with USB port. switched back to official HTC charger from that point, all good.
so - mostly the charger is faulty or expects a different voltage level (110v Vs 240v thing)
Well i just tried the wifes blackberry charger, works fine. How come None of the offical chargers work.
Blackberry Charger
Input: 100~240v, 150mA 50-60Hz, 10-20va
Output: 5v 750mA
HTC chargers
Input: 100~240v, 200mA, 50-60hz
Output: 5v 1A
So it appears the HTC chargers output more voltage but surely this sort of thing would be wide spread.
Called HTC tech support they didn't have a clue so my case is being passed to their 2nd line team.
Confirm
DazzXP said:
Well i just tried the wifes blackberry charger, works fine. How come None of the offical chargers work.
Blackberry Charger
Input: 100~240v, 150mA 50-60Hz, 10-20va
Output: 5v 750mA
HTC chargers
Input: 100~240v, 200mA, 50-60hz
Output: 5v 1A
So it appears the HTC chargers output more voltage but surely this sort of thing would be wide spread.
Called HTC tech support they didn't have a clue so my case is being passed to their 2nd line team.
Click to expand...
Click to collapse
Same here, I am, facing this issue with the official htc charger. When using a blackberry charger this issue does not happen
i've had the same issue with other phones.. i fixed using a Nokia Charger with 1.250 mAh which is also superfast in charging the phone
First charge with mine last night and mine suddenly went laggy/unresponsive when I put it on charge. I also ran a quadrant and only got around 3600 when I'd normally get 4900?!
Wasn't sure if this was due to being on very low battery though (despite being on charge)?
I guess the charger mess upp the capacitive touchscreen, either because of electric fields messing with the sensitive field that sense the finger, or bad grounding in the touch-panel.
I had similar problem with my old Legend. If i had it laying on certain materials (cloth etc) the screen became unresponsive.
so this is not a problem with the phone, it just a design "feature" of having a capacitive touch screen.
And yeah, the charger might be the cullprint. Either it has diffrent pin-out in the charger causing bad grounding or something else.
btw, the voltage is 5 volt on all chargers. the current is diffrent though. I dont think the phone charge with more then 200-450mAH considering it takes 4-5 hours to charge fully.
I've not experienced any screen issues while charging with the screen. I've charged it with the official charger, an iphone charger, a touchpad charger and an xperia play charger.
My old desire used to do this if using certain chargers in some sockets at work.
I'll see what mine is like again later when I charge it.
Has anyone had a pop-up saying something along the lines of 'Activity consuming more battery than the charge is giving' ?
Not in those exact words but that's basically what it said. I was watching a flash video with my phone on charge at the time.
When I plug in my power adapter to charge the tablet more often now I get the Slow Charging notification that says battery is charging slowly due to low electric current of TA/USB connection. Any one else seeing this? I am using the stock charger supplied with the tablet. I have tried this on several AC outlets in several different locations. It does not seen to affect the ability to charge the tablet it just charges it a little slower.
MarkLI88 said:
When I plug in my power adapter to charge the tablet more often now I get the Slow Charging notification that says battery is charging slowly due to low electric current of TA/USB connection. Any one else seeing this? I am using the stock charger supplied with the tablet. I have tried this on several AC outlets in several different locations. It does not seen to affect the ability to charge the tablet it just charges it a little slower.
Click to expand...
Click to collapse
i havent experienced this message except for when i connect the tablet to the pc where the electric current is indeed low
katsika said:
i havent experienced this message except for when i connect the tablet to the pc where the electric current is indeed low
Click to expand...
Click to collapse
Thanks for the reply. I am starting to think my power adapter is not putting out the correct current it should be. I will try using a different 2A charger and see how it goes.
MarkLI88 said:
Thanks for the reply. I am starting to think my power adapter is not putting out the correct current it should be. I will try using a different 2A charger and see how it goes.
Click to expand...
Click to collapse
You might also try a different cord!
You may try to install "battery monitor widget", it will tell you charging in USB mode or AC mode.
I also find the stock LG charger slow charging, the widget shows I'm only charging at around 1100mA max. While the charger itself label said Output 1.8A max. I can't reach this level yet.
If I charge with a stock nexus 7 charger (which is 2A rated), it'll get worse...just reach around 800mA max.
I'm still not sure what's wrong with the charger or the tablet itself...
I can say that the cable that came with the gpad does charge faster than a thinner cable I had. Both were tested plugged into the stock LG charger.
Sent from my LG-V500 using XDA Premium HD app
When I pulled my g pad out of the box and saw the stock charger was below 2A I put it back in the box. I charge my tablet with the 2A charger that my note 2 uses.
I've seen this problem intermittently with the stock LG charger and today it seems to have become a permanent fault. Swapping to my Note 3 charger things are back to normal once more. Swapping back and forth repeatedly the LG charger triggers the warning and the Note charger is fine. It looks like the LG charger is a bit rubbish. I'll press for a warranty replacement.
I have noticed mine recharges really slowly as well. Using the stock charger, and the battery app previously mentioned, it gives me about 1.1A from the stock charger. Using my Vita charger rated at 1.5A I get about 1.4 into the G Pad. It seems their charger just stinks.
I sent them a support query to see if they will replace it without hassle, if they want me to send it back I'll just buy something else instead.
Edit: Heard back from LG, they want me to send the whole thing back to them or return it to Newegg. Not sure why they won't just ship me a replacement charger, it would be much cheaper for them in the long run.
tdodd said:
I've seen this problem intermittently with the stock LG charger and today it seems to have become a permanent fault. Swapping to my Note 3 charger things are back to normal once more. Swapping back and forth repeatedly the LG charger triggers the warning and the Note charger is fine. It looks like the LG charger is a bit rubbish. I'll press for a warranty replacement.
Click to expand...
Click to collapse
Further investigation revealed the original cable to be at fault, as it would not make a data connection with either of my laptops. Another cable from my old Galaxy Note worked perfectly. Even so there is still a question mark about the charger as well. Today I spoke to an LG support rep who promised to send a new charger and cable. They should arrive within five working days. I had read of mixed opinions on LG's support, but so far it all seems encouraging.
Hey everyone.
I noticed a lot of people have been having battery problems.
Not poor battery life, but the issue some people are having where they can only use their phone while its plugged in.
My question is what charger, more specifically, what charging cable is everyone using?
I've noticed that if I used one of my Samsung charging cables to charge this phone, it takes FOREVER! Where the Sony cable that came with the phone charges it literally 3-4 times faster.
The charging cube or block doesn't seem to matter as I am using a blackberry cube with both cables.
I have a feeling that using the wrong cable could be causing people issues with their battery. Like its not providing the battery the correct voltage or something, causing a malfunction.
I don't really have any proof or specific knowledge to base this on, its just a hunch.
So what'd your charging setup like?
Mine = Official ZL cable in a blackberry power cube.
Sent from my Xperia ZL using Tapatalk
atrixxirta said:
hey everyone.
I noticed a lot of people have been having battery problems.
Not poor battery life, but the issue some people are having where they can only use their phone while its plugged in.
My question is what charger, more specifically, what charging cable is everyone using?
I've noticed that if i used one of my samsung charging cables to charge this phone, it takes forever! Where the sony cable that came with the phone charges it literally 3-4 times faster.
The charging cube or block doesn't seem to matter as i am using a blackberry cube with both cables.
I have a feeling that using the wrong cable could be causing people issues with their battery. Like its not providing the battery the correct voltage or something, causing a malfunction.
I don't really have any proof or specific knowledge to base this on, its just a hunch.
So what'd your charging setup like?
Mine = official zl cable in a blackberry power cube.
Sent from my xperia zl using tapatalk
Click to expand...
Click to collapse
yeah it charges much faster in sony charges than a samsung charger for me.acually your device wont accept power more than its requirement but unless the chargers and cables are faulty (defective)it may cause battery issues
Have that problem, and I'm not using the original charger; Using Motorola with motorola / nokia cable; Still...today you have 1 thousand different options to charge usb units, and as long as they're not defective, they should charge ANY certified product with no problem at all.
What I mean is I don't have any other cellphone who had trouble with that on past; if charger is 0,25A will charge slower, if it's 1,5A will do faster.
Official ZL cable and charger and no battery problems so far.
Note 2 charger, sometimes HTC sensation charger, powerbank and laptop with BlackBerry Bold 9700 cable sometimes htc cable...so far so good...
Sent from my Z10 using Tapatalk
CokeJunkee said:
Official ZL cable and charger and no battery problems so far.
Click to expand...
Click to collapse
Ditto
I've charged using Sony, Samsung and Palm charging bricks without any issue thus far... Samsung takes longer to charge...
Sent from my C6503 using Tapatalk
I had a zl charger which used to take forever to charge the phone. I both an 1amp original charger that also took about 4 to 5 hrs to fully charge so I bought Samsung note 3 charger with 1.5amp rating and it charges in e hrs approx. Yes cable matters it has to be high duty one
Sent from my C6502 using Tapatalk
Original cable and charger here!
No problems so far!
Any charger available actually I lost my original charger I loved that charger and one more thing samsung micro usb doesn't stay attached for long little movement and its unplugged
Sent from my C6502 using XDA Premium 4 mobile app
Original Sony charger here. And yes the use of multiple charger with different voltage will reduce the battery life and cause some malfunction. Search in Google there is a lot of confirmed info of this issue
Enviado desde mi C6502 mediante Tapatalk
Hi,
I'm the owner of a new Z1C and I'm wondering if it would be harmful for the battery to charge it with a normal usb cable different from the one supplied by Sony. I can imagine it should not be an issue, but I also tried to connect a older headphones to the Z1C and a popup warned me about a "Non-Sony headphones", so... I prefer to ask to be really sure.
Can I charge the phone with a normal usb cable? Thanks in advance,
I've actually been using the cable that came with my Kindle and it works perfectly, no issues at all. It charges quickly and I don't get any errors on my phone. I've also used the cable that came with my Ipega bluetooth controller and it works as well.
I would however recommend staying away from the wall adapters they sell at CVS/Walgreens near the front, and possibly the cables too. I noticed that whenever I plugged in my phone using the wall adapter, the touch screen wouldn't function properly and acted like every time I touched the screen, even if it was to quickly swipe, that I was pressing instead. Horrible.
I also use a non-Sony charger and it works fine. As long is it is a micro-usb charger it will be fine. Headphones on the other hand are different though like you said. I tried a pair of earphones from my older Sony Ericsson X8 and it tells me it is not a supported so yea...
Since the USB specification is quite rigorous there should be no problems, except for very cheap adapters which provide an unstable voltage.
Hello @dramatictone;,
It's safe to charge it with another charger as long as the ampere of the charger is not higher than 2A. However, most aftermarket chargers are rated at 1A, which means that it'll charge slower.
It's also important to buy a quality charger with the safety marks; if you don't want to risk burning down your house while charging over night. Don't buy those generic China chargers, they're not safe to use.
I hope my answer cleared any doubts.
Have a great day,
GethPrime
Thank you very much everybody, I'm more confident now
dramatictone said:
Thank you very much everybody, I'm more confident now
Click to expand...
Click to collapse
No problem, but remember to buy a quality charger and you'll be fine. However, any MicroUSB cable will be fine for charging, even cheap China ones
GethPrime said:
No problem, but remember to buy a quality charger and you'll be fine. However, any MicroUSB cable will be fine for charging, even cheap China ones
Click to expand...
Click to collapse
Yep. I had planned to use the official Sony charger at home and the oldie Samsung Galaxy S charger (or even a microusb cable) when charging the phone at the office, but I wanted to be really sure first: I've been using the phone for three days now and I have only had to charge it just once, so I don't want to damage the battery now that I have a phone that lasts more than one day
dramatictone said:
Yep. I had planned to use the official Sony charger at home and the oldie Samsung Galaxy S charger (or even a microusb cable) when charging the phone at the office, but I wanted to be really sure first: I've been using the phone for three days now and I have only had to charge it just once, so I don't want to damage the battery now that I have a phone that lasts more than one day
Click to expand...
Click to collapse
Note that the old Samsung chargers are rated at 0,7A, so it'll take some time to charge. Other than that it'll work just fine.