Develop Bugs

[Q] Screen problems

My screen randomly freezes, with Android still running in the background. It also has multicolored "snow" static-like crap on the screen instead of an image half of the time, especially when unlocking the screen. Happens when the kernel hasn't even finished booting as well. I also get visual artifacts appearing on screen, which would be expected if my GPU was OC'd, but it's not. Tried stock, didn't help, so I know it's a hardware problem.
I suspect it might be the slider ribbon, or the screen itself, but I want to know what it most likely is before trying to order parts and spending the money. If it's being caused by the GPU, I'm just gonna pick up a new part-time job and buy a new phone altogether..
Any ideas?

Same problem, same suspicions. I'm taking mine apart and will advise.

Got it back together... no change. Might just be the GPU.

Sometimes while the screen is glitching, moving the slider gets it to work. I'm thinking the ribbon cable in the slider might be damaged on the inside.
I'm gonna try replacing it since the part is $11 on Ebay.
Sent from Asgard

It's kernel problems. Lock and unlock.
Sent from my R800x using XDA

savage24x said:
It's kernel problems. Lock and unlock.
Sent from my R800x using XDA
Click to expand...
Click to collapse
It's not the kernel. I've tried every gsm kernel available, wiped the boot partition with fastboot, wiped everything, installed stock. Doesn't make any difference. 100% a hardware problem.
Sent from Asgard

captain67 said:
It's not the kernel. I've tried every gsm kernel available, wiped the boot partition with fastboot, wiped everything, installed stock. Doesn't make any difference. 100% a hardware problem.
Sent from Asgard
Click to expand...
Click to collapse
I'm wondering if the actual flex cable itself. Since I just derped and sat on my phone and broke the digitizer, I'm just gonna get the whole screen assembly (Since it's only about 5$ cheaper). It could be a while though. I can't order it till next tuesday.
I used to have similar problems on my g2 until I replaced the flex cable. But then again, the image seems to freeze and occasionally glitch, so I'm wondering if there's a faulty solder connection somewhere since shaking/beating/banging on the phone seems to also fix it sometimes.

I managed to dig up four old threads where multiple people had the exact same problems as me, replaced the flex cable, then had zero issues afterwards.
I was just reading them an hour ago. 100% sure the cable is the problem for my phone.
Now it's just a waiting game, first waiting until I have some cash, then waiting for the e-cheque to clear, then the shipment.. I'm gonna have to wait at least a month unless somebody goes and ships one to my door instantly.. Which obviously ain't gonna happen as I'm not a developer and just someone who helps ppl with their phones.
I'm gonna save up and buy a new phone, then give this one to my 11 year old niece after it's repaired. By the time I have enough cash for one of those new HTC models, the cable should be here.
Sent from Asgard

Well if you do it before me, please let me know!! And I'll be sure to report back! I'll order the screen assembly next tuesday.

captain67 said:
It's not the kernel. I've tried every gsm kernel available, wiped the boot partition with fastboot, wiped everything, installed stock. Doesn't make any difference. 100% a hardware problem.
Sent from Asgard
Click to expand...
Click to collapse
tl;dr original post. GPU problems.

jakestarz said:
Before buying a new phone try flashing new or older firmware via wotanserver
Sent from my R800a using xda premium
Click to expand...
Click to collapse
Clearly you didn't read the thread. That had already been done.
savage24x said:
tl;dr original post. GPU problems.
Click to expand...
Click to collapse
It's not the GPU. If you're too damn lazy to read a couple of paragraphs, don't bother replying.

Sorry to resurrect this...
Sorry to resurrect this out of the blue, but I am also having a similar problem.
I have not rooted my R800at, but noticed first that the screen would sometimes stretch or skew into an absurdly distorted shape, only to snap back to normal after unlocking the screen.
Then, a few days ago, I also started to get this colorized snow pattern on my screen. I was wondering if you managed to fix your phone by ordering the cable? Also, not to sound too much like a pathetic n00b, is there a .doc somewhere (Or PDF) showing how to disassemble the phone to replace the cable, if that indeed fixed the problem?
I am going to see if AT&T will warranty the phone (Less than a year old, more than 30 days, not more than 90) but I am unsure if it is going to cost me an arm and a leg to do so.

FadeDown said:
Sorry to resurrect this out of the blue, but I am also having a similar problem.
I have not rooted my R800at, but noticed first that the screen would sometimes stretch or skew into an absurdly distorted shape, only to snap back to normal after unlocking the screen.
Then, a few days ago, I also started to get this colorized snow pattern on my screen. I was wondering if you managed to fix your phone by ordering the cable? Also, not to sound too much like a pathetic n00b, is there a .doc somewhere (Or PDF) showing how to disassemble the phone to replace the cable, if that indeed fixed the problem?
I am going to see if AT&T will warranty the phone (Less than a year old, more than 30 days, not more than 90) but I am unsure if it is going to cost me an arm and a leg to do so.
Click to expand...
Click to collapse
The phone comes with a one-year manufacturer warranty. Since you aren't rooted or unlocked, send it in for repair. If you open up the phone to fix the cable yourself you'll end voiding the warranty permanently. If something else breaks later down the road that's harder to fix, you're gonna need it.
Sent from a Galaxy far, far away

hey everyone well after reach tru this thread i think my flex cable is the problem as well
a while back when i unlock the fone the screen just use to be all jumpy (but i dont think dat was related to the flec cable problem cuz after changing wallpaper it stopped)
but like ah few weeks after i changed my rom, if i didn't slide out my gampad my phone wouldn't unlock, sometimes when i turn it off(the phone vibrates as usual but the screen nevr comes on) and then now like its completely gone i'm getting nothing from the screen anymore
so i'm guessing its the flex cable
and i think thats the reason for my front camera to stop wrking as well

FIX!
captain67 said:
My screen randomly freezes, with Android still running in the background. It also has multicolored "snow" static-like crap on the screen instead of an image half of the time, especially when unlocking the screen. Happens when the kernel hasn't even finished booting as well. I also get visual artifacts appearing on screen, which would be expected if my GPU was OC'd, but it's not. Tried stock, didn't help, so I know it's a hardware problem.
I suspect it might be the slider ribbon, or the screen itself, but I want to know what it most likely is before trying to order parts and spending the money. If it's being caused by the GPU, I'm just gonna pick up a new part-time job and buy a new phone altogether..
Any ideas?
Click to expand...
Click to collapse
Same problem.
Answer is change the screen ribbon 3.50$ on ebay with shipping.:laugh:

ispeedca said:
Same problem.
Answer is change the screen ribbon 3.50$ on ebay with shipping.:laugh:
Click to expand...
Click to collapse
That's correct. You all guys need to replace the ribbon cable/flex cable and the issue will be gone.

[Q] Phone melted. Need to return. Rooted. What to do?

I'm a little concerned about my current predicament.
A month ago I bought a rooted Galaxy Note II second hand. I have had no problems with it until Saturday morning.
On Saturday I plugged it in - it was flat because the battery had ran out of juice from the previous night. I left it off and plugged in. I returned not long after to a slight burning smell, and the phone was roasting hot.
I could turn it on, but it hasn't charged, still showing 1% and cutting out immediately. Any time you plug in within seconds, it overheats.
It has burned in one spot, and burned the battery cover as well.
Obviously I am not impressed, it could have burned the place down if I'd left it on overnight.
However, the device has been rooted, and can be turned on but it will damage it more if you do. It has had a theme applied to it that could only be done with a rooted phone so it is blatantly obvious.
I've put in a support call with Samsung who are going to send out a bag to send it off to them in. I would have preferred to send them an unrooted phone, but obviously not practical and I don't know anyone else with a Note 2. I also don't want to buy replacement components in case I make it worse or damage those.
Anyone faced a similar predicament, and what was done about it?

Well, in this case, a melted phone is very dangerous, they should or must send you a new one just to not report it to the police or the media!
I think the problem was in the battery, it's the only component that can get so hot and even it can explode in some conditions.
Sent from my GT-N7100

My concern is they try to say that it was the fact the phone was rooted that caused it to overheat... although it was switched off at the time.
Don't worry I won't let it go without a fight, but am unsure about what rights I may or may not have.

tameracingdriver said:
My concern is they try to say that it was the fact the phone was rooted that caused it to overheat... although it was switched off at the time.
Don't worry I won't let it go without a fight, but am unsure about what rights I may or may not have.
Click to expand...
Click to collapse
Try to run triangle away, before you return it.
Sent from my GT-N7100 using xda premium

Phone is totally flat, and will only turn on when the battery is connected, and it is connected to the mains. It will overheat with a minute.

In Norway, and I assume in the EU too, they have to prove that there is a connection between the broken phone and the fact that it is rooted to void warranty. No worries then if there's similar legislature in your country.
Sent from my GT-N7100 using Tapatalk 2

What if you charge it with usb cable connected to a computer? Does it still overheat?
Alternatively, do you know any1 with a note 2 whos battery you can borrow?
Sent from my GT-N7100 using xda app-developers app

Try buying a spare battery. And then try triangle away. Put the faulty battery back in the phone and send it to Samsung.
It's way cheaper than having to pay for the full phone repair.

sos_sifou said:
Well, in this case, a melted phone is very dangerous, they should or must send you a new one just to not report it to the police or the media!
I think the problem was in the battery, it's the only component that can get so hot and even it can explode in some conditions.
Click to expand...
Click to collapse
tameracingdriver said:
My concern is they try to say that it was the fact the phone was rooted that caused it to overheat... although it was switched off at the time.
Click to expand...
Click to collapse
This thread's funny. A second hand phone received or bought rooted which could have been using a different kernel, been OC'd, or had any of a laundry list of mods done to it overheats. Since none of that can be ruled out, why is there any reason to alert the media or expect Samsung to be responsible for something that's most likely not a defect but customer induced damage? With millions sold I'd expect more reports of phone's melting if there was some sort of common or repeatable fault. Best of luck OP but your fate will be determined by Samsung's graciousness and not you claiming that a rooted second-hand device somehow combusted on its own having nothing to do with what you or the first owner did to it.

To be fair if it's not charging the battery at all and just overheating/melting the phone it sounds more like a hardware issue than a software one. Something in the charging circuit is screwed up by the sounds of it.
Sent from my GT-N7100 using xda app-developers app

tameracingdriver said:
My concern is they try to say that it was the fact the phone was rooted that caused it to overheat... although it was switched off at the time.
Don't worry I won't let it go without a fight, but am unsure about what rights I may or may not have.
Click to expand...
Click to collapse
idk if this help, last time my S2 also got some issue so I go to SC and the guy there said that I voided my warranty coz I rooted it.
And that statement made me angry, so I said to him in angry tone: why the hell you say its illegal to root and voided my warranty becoz I root my phone. If that's illegal, why the hell Superuser/SuperSU/any root tools exist in Google Play and Google let it in there for a long time? I bought this phone by my money so I have right to install anything in play store.
Then they unable to say something and fix my phone rightaway and told me to be careful next time.
So, rooting isn't illegal, its in Google Play anyway.

ask yr friends or someone borrow a battery and reset the counter first

I don't know anyone with an N2 so I can't borrow a battery, I'd have to buy one.
I'll try plugging it just into the computer, I suppose with less power going in, it might not overheat. I've been reluctant to plug it back in.
Phone is running standard kernel, it was only rooted, with a replacement status bar added, and CWM installed. Nothing special.
Ideally, I would need to flash it back to standard though, so I'll need to find out the easiest / quickest way to do this, and, possibly, reset the counter.
I suppose its possible they will refuse to fix it. If I am, that is me massively out of pocket, and I won't be rooting anything ever again, even buying second hand is losing its appeal.
Heck, as I can't afford to replace it, I now may be stuck with this Nokia Lumia 800 I had to buy as an "emergency" phone, which is actually not a bad little machine in many respects (obviously tiny though).

tameracingdriver said:
I'm a little concerned about my current predicament.
A month ago I bought a rooted Galaxy Note II second hand. I have had no problems with it until Saturday morning.
On Saturday I plugged it in - it was flat because the battery had ran out of juice from the previous night. I left it off and plugged in. I returned not long after to a slight burning smell, and the phone was roasting hot.
I could turn it on, but it hasn't charged, still showing 1% and cutting out immediately. Any time you plug in within seconds, it overheats.
It has burned in one spot, and burned the battery cover as well.
Obviously I am not impressed, it could have burned the place down if I'd left it on overnight.
However, the device has been rooted, and can be turned on but it will damage it more if you do. It has had a theme applied to it that could only be done with a rooted phone so it is blatantly obvious.
I've put in a support call with Samsung who are going to send out a bag to send it off to them in. I would have preferred to send them an unrooted phone, but obviously not practical and I don't know anyone else with a Note 2. I also don't want to buy replacement components in case I make it worse or damage those.
Anyone faced a similar predicament, and what was done about it?
Click to expand...
Click to collapse
Given the near fatal consequences of a battery explosion you shouldnt have any problems Samsung will be much more interested in working out why it happened and avoiding any negative PR about their flagship handset.
However if they can proove that it was the root that caused the burn out (we all know thats not the likely reason) then they may reject the device and tell you it was all your fault. at that point take it to the media.
to me it sounds like the charging circuit has failed and instead of passing charge to the battery its built up in the circuit, mechanical failure can't see how a root would cause that. Were you using the sammy charger, cable and battery?
---------- Post added at 10:31 AM ---------- Previous post was at 10:28 AM ----------
D3_ said:
To be fair if it's not charging the battery at all and just overheating/melting the phone it sounds more like a hardware issue than a software one. Something in the charging circuit is screwed up by the sounds of it.
Sent from my GT-N7100 using xda app-developers app
Click to expand...
Click to collapse
Ye that was my thought wonder if OP has original sammy cable and charger or was given a third party one?

Yes I did indeed use the original charger and cable (it looks original too, not like a knock off). In general, in the past, I've had issues using chargers mean't for other devices, usually just slow charging though rather than it blowing up.
The fact the phone was turned off when it was being charged suggests to me, like you say, that its a proper hardware fault.
We shall see. I'm waiting for the jiffy bag to send it back, it will be at least 2 weeks till I get it back (maybe longer now with Xmas coming up).

tameracingdriver said:
My concern is they try to say that it was the fact the phone was rooted that caused it to overheat... although it was switched off at the time.
Don't worry I won't let it go without a fight, but am unsure about what rights I may or may not have.
Click to expand...
Click to collapse
Take a picture of the burned note2 first, maybe you can use it as a "leverage" when the time comes. You know how burned phone have negative impact on products marketing.

Screen Waking By Itself DRIVING ME NUTS

So my galaxy nexus keeps waking up by itself. The times it does it varies. I've seen a lot of other people have had the problem but no fix.
Any help? It's driving me insane!

Is it plugged in when it does this?

No.

Do you have an app installed that wakes the phone with the proximity sensor? That happened to me before. lol

Again, no. A lot of people have had the problem but i haven't seen a fix yet.

Well its hard to pinpoint the problem obviously without experiencing it. Thats why I ask questions first. It could very well be the screen itself screwing up. I can't really say. Its hard to determine a hardware or software related problem over the internet. If nothing works, I'd say reset your phone to a brand new state and if it continues, you have a hardware issue.
EDIT: Another possibility, your power button.

I had this issue before. But it disappeared when i moved to 4.2.2 kernel. No idea what was causing it down to this very day. I had just given up completely. I tried everything, full wipe. Back to stock, installing with no apps. Couldn't solve it. Then all of the sudden with 4.2.2 it was gone.

usb port
JccageX2 said:
So my galaxy nexus keeps waking up by itself. The times it does it varies. I've seen a lot of other people have had the problem but no fix.
Any help? It's driving me insane!
Click to expand...
Click to collapse
Try disabling "wake up when in charge"
maybe could be a problem to usb port

Screen wakes up when not connected through USB
Hello,
I'll use this thread instead of starting a new one since I'm having the same issue.
My GSM Galaxy Nexus is running the stock Android 4.2.1 (JOP40D.I9250XWMA2).
Starting a few days ago, I noticed that the screen wakes itself when it's not connected to a power source through the USB port. Also, the battery icon often shows it's charging even when it's not connected to a power source.
I didn't install any new applications. Could it be some application update?
How can I investigate whether it's a software or hardware issue?
Thanks for any hint.

FreyrNjord said:
Hello,
I'll use this thread instead of starting a new one since I'm having the same issue.
My GSM Galaxy Nexus is running the stock Android 4.2.1 (JOP40D.I9250XWMA2).
Starting a few days ago, I noticed that the screen wakes itself when it's not connected to a power source through the USB port. Also, the battery icon often shows it's charging even when it's not connected to a power source.
I didn't install any new applications. Could it be some application update?
How can I investigate whether it's a software or hardware issue?
Thanks for any hint.
Click to expand...
Click to collapse
Sounds like a hardware problem. What you're describing is exactly what I experienced, had my USB port replaced under warranty to get rid of it (I believe it's fairly easy to do yourself as well).

Solution
I used to have the same problem, the solution is to flash another ROm, my phone used to think it's charging when it wasn't, it used to boot up automatically even though i switched it off, the solution which worked for me was to switch my ROM or Re-flash the current one.

I had the same issue when the USB-inlet was greasy, dirty and messed up.

Thanks guys for the tips.
It stopped doing this since last night when I tried backing up data and running the Cyanogenmod Installer for Windows that came out recently.
Now that the Nexus Root Toolkit successfully managed to have the phone recognized by Windows again, I'll give it another try.
I expected this to be a bit involved, but didn't know I'd still be at it two days later :-/

it is your usb port
To the OP and all gnex owners with similar problem, you don't need to install/reinstall roms or anything. it's most likely the pin in your usb port. make sure the port is clean and dry, because if it is wet the pin shorts to the inner side and turns the screen on as if your phone is charging. if it is dry and yet your screen keeps turning on, then most likely the pin has become bent and is touching/shorting to the inner side. Get a thin knife or flat screwdriver, and use the point to VERY GENTLY straighten it back to the middle. Read more on this: http://code.google.com/p/android/issues/detail?id=39625
the solution is in post #161. (see how most later posts confirm the solution.) I had this too, and solved it with a point of small knife. hope this helps.

Agreed with the guy above, one of the possibilities is the charging port problem, some claimed that changing a new port doesn't not help. That made me moved to another phone.
Sent from my XT1080 using xda app-developers app

Thanks for the info. I'll experiment with a screw driver if this issue pops up again.

[Q] Needed battery status help on my tab s 8.4

Hi guys, whats happening on my tab? Today it shows from 100% to 1% in 11 min after charge, and it doesn't turn off though after reach 1% ATM. (screenshot attached)
I did an battery calibration by using apps from playstore, the result still same. What should i do?
Is my battery faulty or something wrong with my system? I doesn't root my device.
Any help or suggestion to fix this would be appreciate

xApril said:
Hi guys, whats happening on my tab? Today it shows from 100% to 1% in 11 min after charge, and it doesn't turn off though after reach 1% ATM. (screenshot attached)
I did an battery calibration by using apps from playstore, the result still same. What should i do?
Is my battery faulty or something wrong with my system? I doesn't root my device.
Any help or suggestion to fix this would be appreciate
Click to expand...
Click to collapse
So I see you haven't rooted your device and its still under warranty. To answer your question, the battery is mostly likely faulty with a loose connector. Its best to exchange it for another one since it seems to be a faulty battery. Hope this helps!

I also face this problem before. This is because the battery connector I mean the black that we connect the battery is loose with the motherboard. If you can claim a warranty then go claim a new one. If you can't go to warranty the only solution is send it to a shop that can do soldering. Tell them to solder the black battery connector holder to the board. Resolder it again. Before I also experience this and white flickering on the screen and battery percentage also not consistent. After I resolder it to the board again now I don't have the problem anymore and my battery last longer. The battery connector holder have loose connection with their motherboard.
P/s: I also thought I got defective battery but it turns out my battery is fine. The loose connection with the motherboard makes it like that.

thanks guys, at least i know where going wrong.
being using the tab for 5 months, suddenly it became like that scare me out.
p/s: if send to claim warranty, need a month or two to get it back?

I have used a method that worked for my previous Devices
To help you fix this problem, what you need to do is
Turn on Airplane Mode , turn all the features active in the Tablet, then Shut down the tablet, let it be shut for 1 hour.
After an hour, turn tablet back on, don't turn all the feature on yet. ONLY turn the Airplane mode off.
Wait for 30minute, and see if battery is starting to drop dramatically again. REASON, so you can know problem is hardware of heavy software usage.
After 30 minute, if battery's percentage not dropping significantly. Turn back on the tablet's features , ONLY those that you really need them.
That should fix it. It actually worked for me on all my previous devices, so with the tab S 8.4

Started doing that out of the blue after 5 months so I'd be willing to bet that the connector has came lose. Like that gentleman a few posts up had stated. Doesnt sound like a issue of app usage. Hope you get it taken care of brotha!

I have same Problem
but knox 1
can the warranty fix my Device ?

YusSuF15 said:
I have same Problem
but knox 1
can the warranty fix my Device ?
Click to expand...
Click to collapse
Someone claimed that they still got warrenty even if rooted. Since its a hardware fualt most likely samsung will fix it. Worth a try! Just dont mention anything about you rooting it

DUHAsianSKILLZ said:
Someone claimed that they still got warrenty even if rooted. Since its a hardware fualt most likely samsung will fix it. Worth a try! Just dont mention anything about you rooting it
Click to expand...
Click to collapse
Well thanks for the advice

Back I fix my tab s from warranty Free he say the problem is mtherbord change
and knox 1 after fixed change to 0
http://i.imgur.com/AStqBlq.jpg
أرسلت من LG-D802 بإستخدام تاباتلك

Since yesterday i experience just the exact problem as described above. Battery drops within an instant and it doesn't charge from time to time.
Unfortunately knox is tripped to 1 so I am not quite sure how to request it having repaired.
Would you flash back to stock before claiming a warranty fix? I mean knox is tripped either way - but if a custom rom boots up on the other hand it might be a little too obvious...?
Sent from my GT-I9505 using XDA Free mobile app

Not so usual screen problem

Hello guys, after screwing up my phone I'm using my tablet a lot more. So i'm experiencing some problems. The screen problems increase when i use the tablet more often, but i don't have this phantom touch problems it's actually the screen stop working. It just stays on lock screen and me unable to unlock it, i restart the tablet and still doesn't work. However the strange part is that when i hit the back of the tablet in something it immediately starts to work??? I know about the N7 touch screen issues, but i thought they were software based? But mine looks like it's hardware problem? Can you explain me and help me? Thanks.

Can somebody answer me??

yanis15 said:
Can somebody answer me??
Click to expand...
Click to collapse
If it's hardware, it's most likely, though not exclusively, the cable connections. You need to take the back cover off, and reseat them one by one. Takes a little work because there are 3 cables, one with 2 prongs. Reseat all of them if you can since you don't really know which one caused the problem.

Warranty?
Ok i saw some videos that it may be replacing the screen cables just as you said, but i have warranty. What to do? If i take it to warranty center it's most likely it will work there at the moment? It stops in random times.. What to do?

Removing the back without voiding the warranty is very simple but make sure that you will wear some sort of protective gloves and not touch any copper foil at all ( or you end up with finger prints.. ). Simply reattach the touchscreen connector cable only and you´re good to go.
yanis15 said:
Ok i saw some videos that it may be replacing the screen cables just as you said, but i have warranty. What to do? If i take it to warranty center it's most likely it will work there at the moment? It stops in random times.. What to do?
Click to expand...
Click to collapse

Thanks for the info. Actually i can fix it easly not by hitting, but just by pressing the back cover. I saw where the cables are in a video and can permanently fix it by putting something between the back and the cables to keep thwm in place. And when i press they just go in place. For now i will just press it when needed. If the problem increases i will open and reattach all cables in place. Thanks for answers.