Wall charger and touch screen sensitivity on Optimus G - LG Optimus G (International)

I was messing around with the Optimus G a lot yesterday and when I went to charge it via the adapter in the wall charger. It would have bouts of losing sensitivity to my touch. It doesn't happen immediately, it loses some sensitivity and goes back to normal at random times. USB charging and on battery the screen sensitivity is fine. Anybody have the same issue?

Yeah your not the only one... its a known flaw i guess..

This has been addressed in latest OTA from Rogers and Telus. They just stated rolling out yesterday and the day before. Careful if your root and unlocked though. I think I've also read that it may soft brick if you are.
Good luck.
Sent from my Nexus 7 using Tapatalk 2

It's been completely fixed on the new update. Please follow the thread over here if you have any issues: http://forum.xda-developers.com/showthread.php?p=35711343
P.S. You can keep your root!
Sent from my LG-E973 using xda app-developers app

Related

Problems with touch screen when screen is locked and phone is charging...

Since I thought my phone, I've noticed an annoying problem. When my phone is charging in the screen is locked, I go to unlock the phone and the touch screen seems to have a problem registering my touch for the pattern password.
I would unplug it for a second to draw the unlock pattern, unlock the phone, and then proceed about while the phone is plugged back in. Then out of nowhere, it'll do the same thing.
Anyone experiencing this?
Sent from my SGH-T989 using XDA App
m3trella97 said:
Since I thought my phone, I've noticed an annoying problem. When my phone is charging in the screen is locked, I go to unlock the phone and the touch screen seems to have a problem registering my touch for the pattern password.
I would unplug it for a second to draw the unlock pattern, unlock the phone, and then proceed about while the phone is plugged back in. Then out of nowhere, it'll do the same thing.
Anyone experiencing this?
Sent from my SGH-T989 using XDA App
Click to expand...
Click to collapse
There is another thread here somewhere that talks about the issues while being plugged in. I think this was one that was mentioned.
Sent from my SGH-T989 using xda premium
i am not getting that problem, but if you call tmobile im sure they will switch the phone.
I've had this problem - but only when I used a different charger from the one included (even though it's a Samsung charger). Are you using the cable included with the phone?
Yea it has happened on mine but only if it was laying down when i try to unlock it. once i pick it up it was fine
Sent from my SGH-T989 using XDA App
I can confirm this very issue on two GSII's I've used. It's annoying.
Sent from my SGH-T989 using XDA App
This is a known issue with all variants of the Galaxy S2.
The Galaxy S2 is very sensitive to input voltage, and if it doesn't like what it's getting, the touch screen calibration gets a little funky.
Voltage-regulated chargers (ones that are big and blocky or have a bulb on the wire) tend to work well.
Don't bother exchanging it over this, it won't change anything. You just need a better charger.
Yes, I'm using the same charger came with the phone. I guess we will just settle this issue with the fact that it just gets a little funky When plugged in.
Sent from my SGH-T989 using XDA App
Big thanks to everyone who responded to this thread, hopefully we can figure out what the problem is in the near future
Sent from my SGH-T989 using XDA App
manekineko said:
This is a known issue with all variants of the Galaxy S2.
The Galaxy S2 is very sensitive to input voltage, and if it doesn't like what it's getting, the touch screen calibration gets a little funky.
Voltage-regulated chargers (ones that are big and blocky or have a bulb on the wire) tend to work well.
Don't bother exchanging it over this, it won't change anything. You just need a better charger.
Click to expand...
Click to collapse
better charger yes
phone being sensitive not really
all Properly build chargers will not cause that problem
i purchase cheap 2A charger from Deal Extreme, but those are build good, not like some of the crappo accessories from ebay
BlackBerry chargers works good too
I have the same problem.
As many of you guys said, a good charger is needed for a stable voltage input.
I have no problems charging from the original charger and my desktop computer.
However the problem shows when I am using my laptop (7 year old) usb.
So a good charger is recommended.
I can confirm this issue, but what i want to know is, why does this happen when the phone is lying flat on a surface while charging and goes away the moment you pick it up? If it was a faulty or imprecise charger issue then the problem should persist?
My guess is it has to do with the EM shielding around the charging module, and that it doesnt do enough to shield the totally normal residual interference from interfering with the touch screen digitizer. When we pick it up, our hand acts as an interference dampener and minimizes the issue while it is charging, to almost negligible amounts. But its just a guess. The chargers might also be generating greater than average interference as well. But just charger alone cannot explain why pickibg up minimizes the problem.
The charger doesn't cause any erratic behavior on my Galaxy Nexus like it does on this phone... So what is the explanation behind that?
Sent from my SGH-T989 using xda premium
manekineko said:
This is a known issue with all variants of the Galaxy S2.
The Galaxy S2 is very sensitive to input voltage, and if it doesn't like what it's getting, the touch screen calibration gets a little funky.
Voltage-regulated chargers (ones that are big and blocky or have a bulb on the wire) tend to work well.
Don't bother exchanging it over this, it won't change anything. You just need a better charger.
Click to expand...
Click to collapse
Use the charger that came with the phone
Sent from my Hercules using XDA App
What's unfortunate is that the Samsung charger that came with the device causes the touchscreen issues.
Fortunately, I have an HTC charger lying around that works, no problems.
I have seen this happen with the HD2, Evo 4g, galaxy s4g & Sensation. Its a problem with chargers and the voltage. It happens with those chargers from walmart. Its not just the GS2 phones.
Sent from my SGH-T989 using XDA App
Add the Tmo HD7 to the list.... it happens all touchphones on which i believe has grounds surrounding the phone, touching the touch screen stabilizer or whatever you'd like to call it. It's the ground of the charger, nothing to do with charger instability. Take your laptop's charger, plug it into a wall with no 3rd ground (a laptop that has the 3rd prong) and take that same plug, and plug it into a plug with 3 prongs, you'll notice it has that static-like feeling that makes ur fingers tingle (when you touch a metal part of your laptop). It's the same issue with our phones
I hope this helps someone
Just change charger i have noticed that since i work in a cellphone company .... but i change to a different charger and it stopped doing that....
I used another charger but the problem still exist

could this be rom related?

ive been running calks roms ever since he released them for our phones and i have never had an issue... that being said, i flashed his latest 2.0.1a and was working fine up until yesterday... it seems that my menu button presses randomly for no aparent reason! i cleaned the screen to remove any smudges it may have and that doesnt help... do you guys think its the phone!? like i said the roms have been working fine! i even flashed it again just to check and no go...
Sounds like a problem with your phone unfortunately
Sent from my SPH-D710 using xda premium
also - search Calk's ROM thread for anyone else that might have the issue, a fix or replace suggestion.
Yep sounds like hardware, did it continue after a reboot? Sometimes a system reboot complete with a battery pull can fix little glitches like this.
Sent from my SPH-D710 using Tapatalk
Pull the battery a leave it for a few minutes, then put it back in and see if your problem goes away. It does sound like a hardware thing.
check out my post here
http://forum.xda-developers.com/showthread.php?t=1389972
I've been getting the same thing and managed to catch my phone misbehaving on camera.
I am sure it's hardware as when the problem started for me i was on a stock room that I simply rooted. Thinking it may be something with the rom (like you) I flashed a whole new rom with a whole new kernel (blazer rom with the ek02). the problem persisted and thats the setup I was running when I shot the vid. yesterday I flashed the stock EL13 rom and kernel. same problem.
Let's compare notes and see if we can narrow down the list of causes.
1) it's not rom related.. but MAY be root related. thoughts?
2) I recently damaged my stock charging cable and started using a cable (samsung brand still) that I picked up from amazon... could that be the issue?
3) on the FIRST DAY when I bought my phone, i noticed that the screen goes haywire if I try to use it while its charging. this only happens on the stock charger. I was told by members of the board here that this was normal and dismissed it. could this actually mean that our phones were defective to begin with?
Lets here your thoughts.
btw. I'm having my device replaced on friday. if you have the equipment protection plan then it's free of charge.
As ironic as it is, i posted on this thread just to try and help and be it as it may my phone is now doing this now... its done it about 3 times and its annoying lol
Edit:I'm on blazer 2.0 with desperado and el13... but it did it on ek02 too so its not the modem
Sent from my SPH-D710 using xda premium
so far I'm thinking it's something to do with bluetooth, the headphone jack or third party cables.
anyone else using headphone or a tape adapter at the time this started for them? what about simultaneously while listening to bluetooth?
btate0121 said:
so far I'm thinking it's something to do with bluetooth, the headphone jack or third party cables.
anyone else using headphone or a tape adapter at the time this started for them? what about simultaneously while listening to bluetooth?
Click to expand...
Click to collapse
I don't use any of those....
Sent from my SPH-D710 using xda premium
so is yours completely random or does it seem to happen only under certain conditions?
Got my new device last night. One difference ive noticed is that this one actually charges fully (battery shows 100%) even off of the charger. My previous device dropped to 99% as soon as i unplugged it.
The screen calibration still goes haywire if used while its charging.
Sent from my SPH-D710 using xda premium
It seems to be completely random... although I'm sure its not...
Sent from my SPH-D710 using xda premium
Although i never had the problem on the stock from and kernel
Sent from my SPH-D710 using xda premium
is this rom related
I am using calks 2.5 with rogue kernel. my phone seems to have little lines moving up and down the screen. I just got this phone after turning in my other one because of hardware problems. just wondering if anyone else is experiencing this as well.

Screen doesn't respond to the touch

Well, it seem every phone I use in last 6 month getting this disease when you swipe or touch on screen and nothing happens, or when you press one key on keyboard and it inputs completely different character from opposite side of the screen...
Just now I had the same exact crap going on on Nitro!
I pressed and hold on back button on the gb keyboard and it was acting like I'm pressing random keys at 50 keys per second!
But before that I had trouble unlock the phone, since the slide off motion didn't register at all, the slider would move a few pixels and go back.
The weird fact is the most noticeable this occur when phone is plugged in and charging, unplug it and problem usually goes away or at least become manageable.
What the hell I'm doing to these phones that causing this? Actually this is the first phone where I f.k with the system files, all others I either used CWM or market, nothing else.
I have not had any touch screen issues with this phone other than its just a hair less sensitive compared to my captivate.
[email protected], are you a ghost? I have heard that sometimes phones will act strangely during use if you are a ghost. Something to do with spiritual electromagnitism. This would also explain why you are having compass issues!
Okay, so back to being serious. I've had the EXACT same issues you speak of when my phones (yes, this has happened to other phones too) were connected to 'dirty' power.
What I mean by 'dirty' is either a power supply that was very low quality or using a USB cable that the phone didn't like. Just recently my Nitro was acting erratically while I have it plugged into my computer. It shouldn't have been a problem because I was using a high quality, well shielded Blackberry branded cable (worked perfectly fine with my Nexus One), but as soon as I used the usb cable that came with the Nitro then everything worked correctly again.
Hope this helps!
i had that promblem today ... but nothing i did fixed it so i was able to pull the battery and do a dreded hard reset and its working as good as gold now
tokie_ said:
i had that promblem today ... but nothing i did fixed it so i was able to pull the battery and do a dreded hard reset and its working as good as gold now
Click to expand...
Click to collapse
Just got the same problem. Tried everything listed here to fix it. No luck.
Any other suggestions ?
I've found what Namuna said to be true. Also, I experienced this issue with my phone plugged into the power strip on the nightstand. Apparently there is a grounding issue in that power strip.
Sent from my LG-P930 Full Android on Emulator using xda app-developers app
AllstarE4 said:
I've found what Namuna said to be true. Also, I experienced this issue with my phone plugged into the power strip on the nightstand. Apparently there is a grounding issue in that power strip.
Sent from my LG-P930 Full Android on Emulator using xda app-developers app
Click to expand...
Click to collapse
Could be it. I use a power bar also. Plus I think I'm using a cable from a galaxy nexus now that I think about it.
Maybe I'll try to find an official lg cable.
Thanks again.
Sent from my LG-E973 using xda app-developers app
khanfed said:
Could be it. I use a power bar also. Plus I think I'm using a cable from a galaxy nexus now that I think about it.
Maybe I'll try to find an official lg cable.
Thanks again.
Sent from my LG-E973 using xda app-developers app
Click to expand...
Click to collapse
I haven't had a complete loss of touch responsiveness, but I have experienced the erratic behavior; but only when plugged in and only while charging in AC mode. I've noticed this a lot more since I dropped my phone with the charging cable attached... I can be in USB mode and the slightest touch will knock it off charge yet I have no touchscreen problems. Once, every now and then, I am lucky enough to get into fast charging AC mode; which is much more stable as far as touching and using while charging... but the screen is almost unusable due to the erratic touches. I turned on "show touches" in developer options and while in AC mode, it shows multiple touches in a horizontal line relative to where my finger is. It even affects my soft keys.
Happens with every charger I've tried; my original charger, both HTC chargers I have, and a charger I found a few weeks ago. I've experienced the problem in my house, multiple hotels, and a few other places; both with and without a power bar. Pretty much, what I'm saying, I'm sure I've been connected to a good grounded source of power, yet I still experienced those problems.
Out of curiosity... have any of you either replaced or had your digitizer replaced? I've replaced mine twice, and my problems began shortly after cracking the screen the 2nd time.
Well i tried the charger that came with my optimus g (using a power bar ) and it seems to work fine now.
One more thing i did was try it without my memory card for a bit. I don't know if that had anything to do with it also.
Anyways so far so good.
Sent from my LG-P930 using xda app-developers app

How many times has your Nexus been replaced? + rant

I got my first Nexus about a month ago. About 3 days ago the charging port kicked the bucket. I couldn't charge it at all. I called Verizon and got a warranty replacement. Cool. Came in about 5 hours ago. The very first thing I noticed upon powering up the replacement was that it had moderate/severe screen burn-ins. As well as random spots all over that don't match the color/tint of the rest of the screen.
So at this point I'm pretty much heated. My first nexus was a CPO (certified pre owned) as well. I got VZW to swap my Stratosphere for it.
Anyway... I figured I'd download a ROM to install until my next nexus comes in (#3) because I hate being on stock. I get a low battery warning so I plug it in. I notice IT'S DOING THE EXACT SAME THING AS MY LAST ONE. Any little bit of pressure or movement of the charger causes my phone to lose connection and stop charging..... I tried my original charger. I tried my brothers Droid 3 charger and even the brand new charger I bought when my first nexus started having issues. None of them work! So I tried all of those chargers on my brothers and dads phone and they work fine!! No amount of movement disrupts charging on their phones at all with any of my cables. I tried every combo of charging cable/phone as well as using different power outlets on different breakers. I couldn't believe I got a phone out of the box with the exact same problem I'm trying to return my original one for. This is ridiculous!!!
"Sir, all of our certified pre owned devices pass a 100-point inspection" *cough*BS*cough* If you actually put this phone through a 100 point inspection then somebody needs to get fired because it should have failed the moment he looked at the screen. It's that obvious. Unless they don't inspect the screen - at least when it's on (which makes no sense to me).
So I was wondering if you guys had similar experiences? I knew I was sending my replacement I just opened up back - literally seconds after I powered it on.
Anyways now that my rant is over, how many times have you had to get your nexus replaced before you got a good one?
That sounds like bad luck pal. My own GNex is a GSM one I got a couple of weeks ago pre-owned and it is running fine. It does seem a bit of a lottery regarding the build quality. Does the LTE version tend to have more issues than the GSM?
I've had no problems with my GSM Galaxy Nexus.
Sent from my Galaxy Nexus using xda premium
Suffering from lose usb port issue here =/ crazy how my almost 2 year old G2. Has taken falls, drops, tumbles, etc and is working flawlessly compared to my few month old gnex that I baby the hell out of. Only cosindering the next nexus is its htc manufactured.. my first samsung phone and I kinna regret it. Smh
Sent from my T-Mobile G2 using xda app-developers app
I have no idea. Only ever been with Verizon. I just can't believe I tell them that my charge port died so they send me a replacement with a dead charge port. Plus a faulty screen. Double whammy lol. #3 is being over-nighted to me free of charge. I'll post back some more results about that one tomorrow. I wish I had a camera to take pictures of the screen of my replacement. I'd use my other nexus, but as I said I got it CPO which means I had to buy a battery seperate and only have 1.
Sent from my Galaxy Nexus using xda app-developers app
Had my GSM Nexus for two months and haven't had any problems with it, but I've been worrying lately about mot USB port since so many is having problem with it.
Sprint Nexus since March, got a little burn in near the top of the screen, but haven't needed a replacement yet
No problems here. Received mine in January, bought one for the wife in June and all seems to be well.
Sent from my Xoom using xda premium
No problems for me also.
none mine was great right off the bat
I had the charging port issues with an older nexus.take a small jewellers screw driver and gently pry the small wafer tab you see a hair away from the wall its close to, that will fix it just be very gentle and pull the battery first. I had the same issues until I did that.
Sent from my Galaxy Nexus using Tapatalk 2
RoyJ said:
I got my first Nexus about a month ago. About 3 days ago the charging port kicked the bucket. I couldn't charge it at all. I called Verizon and got a warranty replacement. Cool. Came in about 5 hours ago. The very first thing I noticed upon powering up the replacement was that it had moderate/severe screen burn-ins. As well as random spots all over that don't match the color/tint of the rest of the screen.
So at this point I'm pretty much heated. My first nexus was a CPO (certified pre owned) as well. I got VZW to swap my Stratosphere for it.
Anyway... I figured I'd download a ROM to install until my next nexus comes in (#3) because I hate being on stock. I get a low battery warning so I plug it in. I notice IT'S DOING THE EXACT SAME THING AS MY LAST ONE. Any little bit of pressure or movement of the charger causes my phone to lose connection and stop charging..... I tried my original charger. I tried my brothers Droid 3 charger and even the brand new charger I bought when my first nexus started having issues. None of them work! So I tried all of those chargers on my brothers and dads phone and they work fine!! No amount of movement disrupts charging on their phones at all with any of my cables. I tried every combo of charging cable/phone as well as using different power outlets on different breakers. I couldn't believe I got a phone out of the box with the exact same problem I'm trying to return my original one for. This is ridiculous!!!
"Sir, all of our certified pre owned devices pass a 100-point inspection" *cough*BS*cough* If you actually put this phone through a 100 point inspection then somebody needs to get fired because it should have failed the moment he looked at the screen. It's that obvious. Unless they don't inspect the screen - at least when it's on (which makes no sense to me).
So I was wondering if you guys had similar experiences? I knew I was sending my replacement I just opened up back - literally seconds after I powered it on.
Anyways now that my rant is over, how many times have you had to get your nexus replaced before you got a good one?
Click to expand...
Click to collapse
never. still on launch day nexus. Dropped it a few times... once into the toilet. Still great.
About 5 times...
Sent from my Galaxy Nexus using xda app-developers app
Still on the original, no problems.
Sent from my Galaxy Nexus using xda premium
Paleryder said:
I had the charging port issues with an older nexus.take a small jewellers screw driver and gently pry the small wafer tab you see a hair away from the wall its close to, that will fix it just be very gentle and pull the battery first. I had the same issues until I did that.
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
I tried that. It worked only as a temporary setup for my first one. Every suggestion on this forum has been tried and failed for me, sadly.
sergioosvaldo1 said:
About 5 times...
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
A fellow Verizon wireless customer?
Sent from my Galaxy Nexus using xda app-developers app
Bought it on march... No problem still today...
Sent from Galaxy NEXUS using CoDeNaMeAndROiD
Bought mine begining of July, had issues charging sent it in and came back two weeks later with new port. Strangely before the repair it would charge to 100% and I usually could get around 3.5-4 hrs of screen time and 16+ hours before needing to charge, now with the new port only goes to 92% and screen time 2.5 hrs and about 12 hours sometimes less, haven't changed my usage, really wonder if they borked my battery somehow during the repair. Mine was manufactured march 2012.
Verizon GNex since late April/early May, no issues here.
Once for a faulty charging port at the bottom of the phone
Sent from my Galaxy Nexus using xda app-developers app
5 months or so Gnex GSM - no problems

Charging issues

Hi I am using the ICS leak and sometimes when I plug the micro USB cable to the phone and other end to the wall the phone does not charge.I have tried multiple chargers and the only thing that fixes it is rebooting the phone, but recently at times that does not help. Does anyone else experience this? I am thinking charging may be controlled by the ROM and I may switch to something else.now I am only hopping it is not hardware but I do know it is slightly buggy connecting to the computer. This is why I am asking to know if anyone else experiences charging issues.
Sent from my SGH-I927 using xda app-developers app
I haven't experienced any charging issues. It might actually be hardware related which sucks.
sent from my captivate glide running ICS (NardROM 0.4 Rooted)
I had the same problem on GB plus my volume key on the bottom side didn't work. But a couple of days later, I dropped it hard by accident. Everything was back to normal. Not saying you should drop yours intentionally but my phone had so many problems and yet still love the thing.
rogernizzLe said:
I had the same problem on GB plus my volume key on the bottom side didn't work. But a couple of days later, I dropped it hard by accident. Everything was back to normal. Not saying you should drop yours intentionally but my phone had so many problems and yet still love the thing.
Click to expand...
Click to collapse
Thats funny haha lets drop our phones and see what happens haha
I have no charging issues
Sent from my SGH-I927 using xda premium
I think it's the microusb ports that are the culprit as I had similar issues with it that included connectivity issues when trying to update to ics. I had to "hold the phone" with one had & the cable with the other to keep a stable connection to get it to complete.
sent from my Rooted SGH-I927 Stock ICS using XDA-devapp
My microusb port is really loose and the cable moves and pulls from side to side a lot. Haven't had charging issues yet though. Hopefully I never will.
sent from my captivate glide running ICS (NardROM 0.4 Rooted)
Would not charge all day then it gave me a message that it needed to be charged,I plugged the cable in and it started charging again. Weird.
Sent from my SGH-I927 using xda app-developers app
That's weird, I wonder why it did that...
sent from my captivate glide running ICS (NardROM 0.4 Rooted)
I think it is hardware,I push down on the connector when plugged to phone then it status charging.but once it starts no movement stops it.must be 1 contact that is not being made to initiate the charging.
Sent from my SGH-I927 using xda app-developers app

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