USB-C charging port & battery replacement - Xiaomi Mi Pad 4 Questions & Answers

My less than 2-years old Mi Pad 4 has recently died. It's done and dusted. But I am still curious....
1. The charging started being unreliable after about 9 months of daily use. I replaced the charging port. Since then, I had to replace it every 2 months or so! Surely, it can't be a normal behaviour of a tablet. I couldn't really work out what was the cause. Has anyone experienced the same?
2. Being so fed up with it, I decided to replace the battery. Found it was so impossibly tightly glued... then stupidly managed to poke it with a metal tool, resulting in burning my fingers, burning a patch of my floor, and killing the tab completely. The room got filled with toxic smoke. Sheer horror. So please don't make the mistake I made. I have in the past managed to replace a 'non-replaceable' battery in another device, but this one is really non-replaceable!!!

Related

Intermittent charging (stock ICS, multiple charger, probably not dirty port..)

My girlfriend's Note started acting weird. When she plugs in the charger it randomly stops and starts, sometimes for periods of seconds, sometimes minutes. We checked every combination of cord and charger (AC and car), and they all do the same. We both cleaned out the charger port, but that didn't have any effect. As a matter of fact, just sitting there motionless on the table it will still randomly start and stop charging.
I also noticed that the battery level seems to be off. At one point it was down to maybe 20% (in the yellow). I rebooted and it was up to 30 (in the green). I don't have any real numbers, it was only something I noticed. It's not rooted so I couldn't clear out the battery stats. Instead I drained it down to 0%, charged it all the way to full while it was off. It seemed to help for a day, but the problem came back later.
Could it be battery? Or phone? She has at&t insurance on it, and we're going to run to the (official) store. I just don't know if they send it back or replace it. She can't really be without a phone, so I'm hoping it's the battery (unless they want to replace the phone on the spot).
All we know is you have an at&t phone. What have you done to it?
same problem with Samsung Galaxy Note
Hi there everyone, i'm having the exact the same problem and my galaxy note is acting just like that- weird !!
About two months ago I updated to ICS and after that no issues, only once did it not charge as it was supposed to until i turned it off, removed the battery and put it back in.
Only now has it been charging like explained above -- the charging process as well as battery indications would be very inconsistent -- that is to say, it would charge for some time and then stop unexpectedly, whether turned on or off during the process.
Also, recently my PC would not recognize the phone on Windows 7 anymore, whereas before that it had been recognized seamlessly.
I've been using my galaxy note for about 8 months now, as well as about 2 months on ICS, and only now has there been this persistent issue.
Also, I did not use it inappropriately, rather with extreme care. I also got a phone case and have been using orginal software and hardware only, so the phone has been properly handled.
However, I have been using it pretty much, so it might be "wear and tear" in terms of battery usage, even more so, because it's been regularly charging and discharging in the car or at home, at the same time. Still, what surprises me is that my PC would not recognize it anymore even when it's turned on. Then, at times it would also go to "car mode", although it is not connected to the car dock. These issues have come up just now, as well, so i can imagine it might be a software or even port-related issue.
Unfortunately, at this moment I cannot take it to the store i bought it from to have them check the phone, so that's why I'm trying to figure out the problem myself. After all, if it's software or battery-related i might be able to fix it without having it replaced.
The phone is not branded and free to use with any carrier.
@ Face of Boe:
Did you go to the store then and have it replaced or was it in fact the battery, or did they (you) fix the problem otherwise?
Any help would be highly appreciated.
Chris
Try your preferred mobile repair shop first.
Face Of Boe said:
My girlfriend's Note started acting weird. When she plugs in the charger it randomly stops and starts, sometimes for periods of seconds, sometimes minutes. We checked every combination of cord and charger (AC and car), and they all do the same. We both cleaned out the charger port, but that didn't have any effect. As a matter of fact, just sitting there motionless on the table it will still randomly start and stop charging.
I also noticed that the battery level seems to be off. At one point it was down to maybe 20% (in the yellow). I rebooted and it was up to 30 (in the green). I don't have any real numbers, it was only something I noticed. It's not rooted so I couldn't clear out the battery stats. Instead I drained it down to 0%, charged it all the way to full while it was off. It seemed to help for a day, but the problem came back later.
Could it be battery? Or phone? She has at&t insurance on it, and we're going to run to the (official) store. I just don't know if they send it back or replace it. She can't really be without a phone, so I'm hoping it's the battery (unless they want to replace the phone on the spot).
Click to expand...
Click to collapse
I had this exact same problem a couple weeks ago...it all started one day at work when I had my phone plugged in (as I usually did if it was in one place for more than 5 minutes), but after turning on my screen for the the first time in an hour or so, I noticed that it hadn't charged at all! The indicator at the top didn't even show that it was plugged in.
Figuring it was just some kind of little glitch, I unplugged it, blew inside the charge port as well as the cable (old Nintendo habits die hard lol). Well as I went to plug it back in, I realized that NOW the indicator showed it was "charging", and my phone had gotten super hot in just the 30ish seconds it took me to blow the port and cable (heh.)
So obviously I freaked out and immediately shut it down, pulled the back, and removed the battery to let the two pieces calm down and make nice - before ultimately putting it back together and booting up after 15 minutes or so.
So the good news was that the "reverse charge" issue was gone...but the bad news was, the charge activity started acting literally word-for-word like your girlfriend's. Intermittent charging when it was sitting still, not charging at all for a period of time, losing more battery than it was gaining while it was plugged in and the screen was OFF...so yeah, it sucked. I did notice that I could push the cord back while it was plugged in and it would stay charging, but obviously I can't sit in one spot holding my phone for 5 hours a day - and that stopped working after a few tries anyway.
I spent countless hours on the internet, googling different phrases to try and find similar instances of this happening - but to no avail. Everyone's story was just a little different...and pretty much everything I found outside of XDA* was written by people over in England who dropped their N7000 in the snow, causing the charge port to be corroded. The conclusion from everything else I found regarding this issue for the i717 was essentially always "the only way you can fix this is to get a new phone, but you're screwed because this glitch causes the phone to look like it has water damage and therefore renders it ineligible for manufacturer warranty claim or even insurance claims".
To make matters worse, not only was my phone effectively unchargeable, but it was discharging at an absolutely absurd rate. I'm talking approximately 20% every TEN MINUTES!
So I got desperate (it's Sunday by now)...all of the cell phone repair places were closed where I live, but I was able to do some searching and found this guy that was surprisingly available at the AT&T store closest to my house. That kept me alive until Monday, when I was able to take it in to the guy who I've been going to ever since the iPhone days (he is FANTASTIC). So he looks at it, takes it apart, and in about 5 minutes he tells me that the small little strip where my charge port attaches to the mother board (or whatever) had a lot of cracks running across it that were causing it to short-out. He said that it's a very common problem with the AT&T Galaxy Note, I guess due to them using a pretty cheap part in that regard. This obviously explained the intermittent charging, the brief "reverse charge", and even the battery drain (if the motherboard was shorting out).
So what did he do?
Replaced the little strip that connects the charge port to the motherboard...took him half an hour...cost me $25. Advised me that, when I plug my phone in from now on, to try as hard as possible to keep the phone still and not move it around. So at least in my case, it was NOT the battery. If you'd rather be cautious and not take the phone into a store if you can avoid it, you can probably get a replacement battery online for just a few bucks and at least eliminate that.
So the moral of the story is: DO NOT try to take the phone in to AT&T store or deal with your warranty/insurance until you take it in to a decent repair place and have them take a look at it.
Hopefully this helps...I'm sure you are wanting (like I was) a software solution, but it is what it is. And just curious, did your girlfriend have any similar "reverse-charge" instances like I described above?
tl;dr: The problem is the charging port, not the battery. Should be an easy and inexpensive (<$50) fix at a legitimate cell phone repair location.
*The silver lining in this whole thing was that it caused me to stumble upon this forum...so I went from stock ROM, stock everything (before my charge port issue) to having flashed about one ROM per day over the last 5 days because I've been so interested in the entire world of customization that I only discovered after seeing a thread with "Gubment Cheeze" in the title (who WOULDN'T at least look at that to see what's up??) here on XDA and starting to read. I've been a 24/7 lurker ever since
I read the last post by cpa poke and I must say it's quite risky to actually have a phone repaired by an unlicensed dealer/repair shop, because you'll cause any warranty left on the item to be effectively void.
I do know it is tempting for any of us to get our phone fixed as soon as possible, but then I think we should keep it cool and try to work out what else we can to do to make it work -- even though it might be temporarily -- until we can return it properly, as according to warranty indications.
Any of you trying to get a "repair fix" might want to consider that it may well be rather short-lived, because the same problem could persist for some reason -- that your repair shop did not recognize. If ultimately you have to get it repaired again, your ("fantastic") repair guy might then not be able to solve the problem and at that point any warranty claim would be quite certainly rejected, either (because of any previous unauthorized modifications to the device).
As far as I'm concerned, I have been testing my device with different chargers, currently it's charging consistently while turned off.
Also, I don't think I have had any of the "battery drainage" problem while charging, rather the battery indications were rather unreliable.
Then, I have read the problem could be solved by changing the battery. So I'll see if that makes a difference as soon as I get a replacement.
Another option will be to factory reset the item. I'll try that as soon as I get a backup of my phone data.
To all of you who are stuck with this issue I suggest you try some of the above: different chargers, removing and reinserting your battery, or else a battery replacement, factory reset.
Also try and leave the phone for some time and try to charge it then while turned off -- that's how I got my phone to charge again (until now), and according to the battery symbol it's almost fully charged -- the issue might still persist after that, but maybe it'll work until I can fix it otherwise, or get a replacement. After all, if it's been handled properly we should expect to get it replaced.
chris110284 said:
I read the last post by cpa poke and I must say it's quite risky to actually have a phone repaired by an unlicensed dealer/repair shop, because you'll cause any warranty left on the item to be effectively void.
I do know it is tempting for any of us to get our phone fixed as soon as possible, but then I think we should keep it cool and try to work out what else we can to do to make it work -- even though it might be temporarily -- until we can return it properly, as according to warranty indications.
Any of you trying to get a "repair fix" might want to consider that it may well be rather short-lived, because the same problem could persist for some reason -- that your repair shop did not recognize. If ultimately you have to get it repaired again, your ("fantastic") repair guy might then not be able to solve the problem and at that point any warranty claim would be quite certainly rejected, either (because of any previous unauthorized modifications to the device).
As far as I'm concerned, I have been testing my device with different chargers, currently it's charging consistently while turned off.
Also, I don't think I have had any of the "battery drainage" problem while charging, rather the battery indications were rather unreliable.
Then, I have read the problem could be solved by changing the battery. So I'll see if that makes a difference as soon as I get a replacement.
Another option will be to factory reset the item. I'll try that as soon as I get a backup of my phone data.
To all of you who are stuck with this issue I suggest you try some of the above: different chargers, removing and reinserting your battery, or else a battery replacement, factory reset.
Also try and leave the phone for some time and try to charge it then while turned off -- that's how I got my phone to charge again (until now), and according to the battery symbol it's almost fully charged -- the issue might still persist after that, but maybe it'll work until I can fix it otherwise, or get a replacement. After all, if it's been handled properly we should expect to get it replaced.
Click to expand...
Click to collapse
While I agree that taking it to a repair place should only be reserved for desperate/time sensitive situations, the only reason I chose that route over going through AT&T or an insurance company was that, from everything I'd read, the symptoms alone would likely cause them to assume water damage - thus rendering the same scenario as if the 3rd party repair voided the warranty.
Im having the same problem with myGalaxy S3 today, random intermittent charging..
I Just took off the back cover a few minutes ago and found a little glob of water sitting above the charging port!! Aaah!!
Don't know how it got there, but going to let her dry out and see if it resolves itself.
info:
rooted S3 i9300
2 months old
ROM: Complex-D 2.1.3
Getting random freezes on this ROMfor a few days also, so going to flash a new rom and see if the problem persists
Is it me, or is this a retardly common issue with i717s? I've had this same issue twice. I replaced the charger flex board when I bought the phone in the first place. And now it hasn't been a month and the flex board seems like it's out again.
My phone had this issue and all I did was oder the charging port from parts4repair.com and it cleared the issue up
Sent from my SAMSUNG-SGH-I717 using xda premium
Are you using the Samsung charger for your phone? It seems you are over volted and burn your usb port.
rangercaptain said:
Are you using the Samsung charger for your phone? It seems you are over volted and burn your usb port.
Click to expand...
Click to collapse
Agreed .....and another thought comes to mind..
Non-OEM charger tips, especially car dock chargers and desk chargers have port tips using different material thicknesses.
I am speculating here, but it's likely that the off sizing would produce intermittent charging problems or damage to the device.
Of course, the overcharging effect would certainly account for rapid flex cable burnouts.
Without the cables and a micrometer, impossible to know for sure.
OEM is certainly preferable....g
Sent from my SAMSUNG-SGH-I717 using XDA Premium HD app
srkrono said:
My phone had this issue and all I did was oder the charging port from parts4repair.com and it cleared the issue up
Click to expand...
Click to collapse
I did the same about a month ago, when I got the phone. Now it's out again.
rangercaptain said:
Are you using the Samsung charger for your phone? It seems you are over volted and burn your usb port.
Click to expand...
Click to collapse
I didn't know this was anything more than a myth. Though, I'm not sure this is my problem. I can charge the phone - for now - by putting the phone on my bedside table and putting a small weight along the length of the cable so it holds the jack at an angle against the port.
I know I'm gonna get flamed for that last statement.

[Q] damaged charger; both male and female

hi,
Thank you for looking at my question. I have a prime which is roughly 15 months old. rooted and running the new energy rom. I use this both for work and at home daily and I am totally happy with everything about it.
Over the past week or so I've noticed that it's hard to plug in the charger every evening and today when I plugged it in the display went dark. You can very faintly see the start up screen but no real lighting at all. I took a look at the charger and several of the cooper peices are bent over and you can see a bit of where on both sides from 15 months of use.
I just contacted Asus customer service and got the normal caveats you typically get when you attempt to return for repair anything by phone...it will take about a month, you need to pay for shipping, etc.
i checked this forum using keywords like "Damaged charger" and didn't come across anyone else that's had this problem. Is anyone familiar with this issue? There's no reason except the charger (and the possible short to the display I just caused plugging it in ) that I wouldn't be happy with this tablet for a few more years. I just don't want to put out, potentially, comparatively alot of money if the plug has been failing regularly for others too.
Anyone familiar with this problem? does anyone who's dealt w/ Asus care to guesstimate a cost?
Thank You for your help.

[GUIDE] Fixing Micro-USB without soldering!

Hello all,
Two days ago, my phone gave up on me, at least the Micro-USB. I have had my Xperia X10i since release, which I believe was summer 2010. It made me very sad, since I no longer would have a phone and thinking back to all the ROMs, rooting and other fun stuff I used it for. It would not charge anymore.
Going in to several repair shops they told me the same. Changing the Micro-USB port that was soldered to the motherboard of the phone would be a pain, both in work and for the wallet. Everyone told me it was better to get a new one.
But I wouldn't accept that.
At writing moment, my phone is almost fully charged and I did this discovering a few tricks. That's why I want to help you to fix your phone and not lose hope just yet. First of all, my phone showed symptoms of battery draining very fast from times, charging would only do if it was connected in a specific way, etc. If you have the same or similar symptoms, follow me below;
1. First step is to find some Acetone. It is used for cleaning and I bought a bottle for around 3$. This might not be necessary, but it's worth a shot! I also used a flat screwdriver, preferably quite small. Put the screwdriver on a flat surface with paper or something underneath. Pour some Acetone on and wait for a few seconds. Now take out your battery and without battery in your phone, press the Power ON to discharge it.
You can preferably use a needle for cleaning, I just used a screwdriver since it was the thing I happened to have around. Clean inside the Micro-USB port very carefully for dust. Now put the battery in and try charging your phone again. If you still have problems, follow along...
2. Take out your charger and look at it. At the front of it you can see the metal part which is inserted into the Micro-USB. Take a small nipper and press the two sides together, forming a very slight bend on the metal. Alternatively, which I did, was to take my screwdriver previously and press the side of the metal with it, against the edge of the table or whatever (not very clever). The goal is still to form a slight bend and make the Micro-USB connector a bit tighter. Try plugging it in after doing so. If it still doesn't work, follow along...
3. Sometimes I guess it might just be the battery that might be the problem. I used mine for 3 years now, and the lifetime for an Iphone is normally around 2 years. Try changing the battery, best would be if your friend or a relative have a similar phone.
4. Last but not least, just because it doesn't start charging upon connecting to the phone doesn't mean it wont charge at all. I told you previously of my phone charging, but my charger will need to be inserted in a specific way and it needs a constant pressure on it. I have a few books stacked on it now while charging. So keep the Micro-USB clean, try bending your connector and good luck.
I just saved myself 220$.
- Synok.

[I9300] Battery charging issues.

Hi all,
The problem I have is rather well known and sooner or later will probably hit every S3 user out there. I'm asking this question to see if someone found a solution now.
I've been using my S3 till it premiered in 2012 so I'm aware of most surprises it can throw at me. The first time I encountered charging issues was a few months after I purchased the phone. Then I found a solution on XDA - a charger&cable duo needed to be replaced. I did that, the problem went away for another few months.
Till now this phone munched several sets of chargers and a few batteries. I always used Galaxy Charging Current app to pick the best charger, but it started to become a challenge. Right now I can neither use power banks nor charge from USB. No car charger works. The best I have are S5 stock charger and some Sony replacement one, but they give 400 ma for 20 minutes at most, then it falls to 0 i I need to reconnect the charger.
And finally I borrowed a 2A Xiaomi charger... and that gives a solid 1A charge. I'm going to buy myself one, however I know it's a temporary fix.
The problem is definitely of hardware origin - I used different ROMs / kernels. It's either USB port or some charging module.
Have anyone by no figured out what is responsible for S3 losing ability to charge properly? Is it worth to resolder the charging port?
No water drop ? (corroded usb port or cold solder joint)
I'm currently using a S3 as my so-called main phone and I have no battery or charging issues at all.
However, I did get this phone for free with the motivation that the battery is fried and it holds no charge.
Like you're saying, alot of S3 owners are experiencing theese issues you describe.
Allthough I DON'T know the reason for why this happens, what I do know is that the problem stopped for me as soon as I flashed my ROM with Cyanogenmod 12.1 (Unofficial - Dated 2015-12-18 ) and TWRP.
So I guess that's my recomendation. It's actually a real nice OS with loads of great features.
EDIT: I would like to add that I'm still using the same battery that was in the phone when I got it.

Tablet dies when battery drops <50%

Hello everyone, I bought my Nexus 9 two years ago and it has been a complete disaster for me since the beggining.
During the summer, the tablet desided to go crazy when the battery dropped below 30-40%.
The screen would turn white and the tablet produced a REALLY loud noise.
Since there is no dedicated HTC service center in my country, the tablet was sent to Romania 3 times, in order to be fixed.
The first time they only flashed again the stock firmware, the second time the service center "cleaned the screen from dust" and the third time (it had already been a month), they finally decided to fix it by replacing the screen and the charging circuits.
The table was ok since that, but last week randomly it decided to lag when battery was under 30-40%, the cpu got stock at 653mhz and it stopped charging.
Since i was on lineage Os, i thought it might be a rom or kernel issue, and i reverted back to stock.
However, the stock rom only solved the charging issues, as I was able to fully charge the tablet.
But now, when the battery drops below 50% the tablet dies on its own.
The only way to turn it back on, is to open the back cover, unplug the battery and then replug it.
Do you have any ideas as what might that be?
Is this because the battery has died, or maybe because of some other hardware problem?
I really wish i can solve this on my own, because now my tablet is out of warranty and the repair center has been proved not to be trustworthy
Thank you
nickefor said:
Hello everyone, I bought my Nexus 9 two years ago and it has been a complete disaster for me since the beggining.
During the summer, the tablet desided to go crazy when the battery dropped below 30-40%.
The screen would turn white and the tablet produced a REALLY loud noise.
Since there is no dedicated HTC service center in my country, the tablet was sent to Romania 3 times, in order to be fixed.
The first time they only flashed again the stock firmware, the second time the service center "cleaned the screen from dust" and the third time (it had already been a month), they finally decided to fix it by replacing the screen and the charging circuits.
The table was ok since that, but last week randomly it decided to lag when battery was under 30-40%, the cpu got stock at 653mhz and it stopped charging.
Since i was on lineage Os, i thought it might be a rom or kernel issue, and i reverted back to stock.
However, the stock rom only solved the charging issues, as I was able to fully charge the tablet.
But now, when the battery drops below 50% the tablet dies on its own.
The only way to turn it back on, is to open the back cover, unplug the battery and then replug it.
Do you have any ideas as what might that be?
Is this because the battery has died, or maybe because of some other hardware problem?
I really wish i can solve this on my own, because now my tablet is out of warranty and the repair center has been proved not to be trustworthy
Thank you
Click to expand...
Click to collapse
Your original issue is kinda common on n9. It could have been solved by unplugging the battery (maybe cleaning connection) and re-plugging. The new issue I haven't seen before. Maybe try wiping the battery stats.
I can confirm that re-plugging battery helped in my N9
I just got this Nexus 9 a couple weeks ago from a family member who got a new tablet due to the Nexus 9 doing a similar thing as the OP has described. The battery would get like 50%-20% and screen would go crazy and a loud screeching noise would take place until you hard reset with the power button. Worked great long as i kept it plugged in on the charger.
So i fixed the problem on mine by doing what others recommended. I took the back off the tablet and disconnected the battery. cleaned up the contacts and let it sit unplugged for a few mins and put it all back together. I then dumped the stock OS for lineage and elemental kernel which also disables the encryption allowing the tablet to run significantly faster than the stock setup. I also disabled the animations in the developers options as i'm a power user through and through over eye candy.
Since doing all that, i'm on week two of heavy usage and the tablet runs like new and is snappy as hell. Goes through the whole cycle of the battery now without the screen going nuts and the screeching noise when the battery gets low 50% - 20%. Not sure how long it will last but so far so good and i scored a decent tablet for free. Only thing holding this tablet up is the the lousy 2gb ram but it's still a very respectable piece of hardware to be 2014 tech.
If it acts up again i may invest in a new battery for it to see if it fixes the issue as i don't have any money invested in the tablet anyway. So it would at least be worth a new battery but so far i've had no problems with it after doing the above fixes recommended by others and the battery in it still gets roughly between 6-7 hrs between charges so not bad for a battery that old.
Just finished up my holiday shopping with the Nexus 9 and not a problem out of it so far. If this Nexus 9 stays working good then it will be replacing my Nexus 7 2012 32gb Grouper as my daily driver. The old Nexus 7 has been solid for me since i got it in 2012 but it's really time to let it go as it's really showing it's age now but still works good as a reader and browsing the web isn't too god aweful. Hope the OP figures out a solution as the Nexus 9 is still a very capable tablet. Hope my experience shared helps with your issue.
Juggley said:
I just got this Nexus 9 a couple weeks ago from a family member who got a new tablet due to the Nexus 9 doing a similar thing as the OP has described. The battery would get like 50%-20% and screen would go crazy and a loud screeching noise would take place until you hard reset with the power button. Worked great long as i kept it plugged in on the charger.
So i fixed the problem on mine by doing what others recommended. I took the back off the tablet and disconnected the battery. cleaned up the contacts and let it sit unplugged for a few mins and put it all back together. I then dumped the stock OS for lineage and elemental kernel which also disables the encryption allowing the tablet to run significantly faster than the stock setup. I also disabled the animations in the developers options as i'm a power user through and through over eye candy.
Since doing all that, i'm on week two of heavy usage and the tablet runs like new and is snappy as hell. Goes through the whole cycle of the battery now without the screen going nuts and the screeching noise when the battery gets low 50% - 20%. Not sure how long it will last but so far so good and i scored a decent tablet for free. Only thing holding this tablet up is the the lousy 2gb ram but it's still a very respectable piece of hardware to be 2014 tech.
If it acts up again i may invest in a new battery for it to see if it fixes the issue as i don't have any money invested in the tablet anyway. So it would at least be worth a new battery but so far i've had no problems with it after doing the above fixes recommended by others and the battery in it still gets roughly between 6-7 hrs between charges so not bad for a battery that old.
Just finished up my holiday shopping with the Nexus 9 and not a problem out of it so far. If this Nexus 9 stays working good then it will be replacing my Nexus 7 2012 32gb Grouper as my daily driver. The old Nexus 7 has been solid for me since i got it in 2012 but it's really time to let it go as it's really showing it's age now but still works good as a reader and browsing the web isn't too god aweful. Hope the OP figures out a solution as the Nexus 9 is still a very capable tablet. Hope my experience shared helps with your issue.
Click to expand...
Click to collapse
I just picked up a spare Nexus 9 because I want to try an Android build that has encryption turned off (I have a Nexus 9 running 7.1.x). So I'm very interested in your build, it's overall compatibility, and how you went about selecting and installing what you did.
But on to your screen/screeching problem! I solved mine by removing the back cover, disconnecting the battery, cleaning the connections, and putting it all back together. It's been running problem-free for months now! Here is my original post and replies on that exact issue: https://forum.xda-developers.com/nexus-9/help/strange-crash-specific-app-t3604379
I'm not that good at assembly/disassembly, but this was very easy! Good luck!
Thank you Thank you Thank you Thank you
madbat99 said:
Your original issue is kinda common on n9. It could have been solved by unplugging the battery (maybe cleaning connection) and re-plugging. The new issue I haven't seen before. Maybe try wiping the battery stats.
Click to expand...
Click to collapse
You rock! So far (just did it today) this has totally worked for me. I Have ran the crap out of it on lest then 50% battery and no issues!
Isabelle713 said:
You rock! So far (just did it today) this has totally worked for me. I Have ran the crap out of it on lest then 50% battery and no issues!
Click to expand...
Click to collapse
Nice! I have a 2nd N9 as well, a white one (my first was black) and it has that same issue. I cleaned the battery connection. Fixed it for a few months, then came back. Now at all different battery levels (all below 40%). Iay try cleaning it again.
My first one is on it's 2nd USB daughterboard. And needs another one now. Mostly my fault this time. Watching movies in my work truck (really safe, I know) with an OTG stick plugged in and it fell out of it's stand and smacked right on the otg stick. Now charging and OTG file transfers are hit and miss (mostly miss).
I'm going to fix it again. The USB daughterboard is only around $10 - $15 US. Takes about 15 minutes to fix.
Seems the different colors (white, black, sand color) each are prone to each of the common hardware issues. Black one never had battery issue, but it's getting bubbles in screen at the corners.
Both have the faded, white - ish spots on the screen at the left side (in landscape). Around where the nav bar is in portrait. May have something to do with it.
Ok I've rambled on enough, LoL.
Enjoy your weekend, all you Nexus 9 owners out there.
Sure, we were all a little disappointed at the build quality. Especially for the launch price. And ESPECIALLY if you had the added excitement of upgrading from a Nexus 7 (2013), like I did (and many others). But we still hang on to the 9 because it's tough to replace. Size, flashability, nostalgia, and a bunch of leftover "but this thing was supposed to a super Nexus* that doesn't go away.
Ok done rambling for real this time! ?

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