Sony xperia xz3 H9436 - General Questions and Answers

I have one that was dropped. The front and display are whole but back are cracked. It often loose internet connection and frooze and restarts. What can the fault be?

this seems like a hardware problem. take it into service

I guess it's not the smartest thing to do a factory reset when the phone can restart?

It's restarts almost every time when it has turned on. Can it be the battery that has gone out of concact? I guess the backside can be removed with a little heat?

It works in safe mode but restarts in normal mode. What can the problem be?

Related

Xperia L crashing randomly

My Xperia L started to do weird stuff about a month ago. Suddenly all apps would crash (unfortunately.. has stopped working). I have to pull out the battery to fix it and sometimes it wont start (bootloop or stuck on sony logo). I did hard reset, flashed stock ftf but nothing works. Sometimes it does this when it is under load and sometimes completely random. I bought a phone with a cracked screen after i bricked mine and it had a battery drain problem. After taking it to a local reapir shop they've managed to fix it but they told me they had to resolder something because of water damage. Is it possible this problem to be the result of water damage also?

Z5p unresponsive and start getting really hot

Hello guys
After about 2 month, this is actually the first time I have experienced such a problem with my Z5p...
I was using telegram and somehow the device became unresponsive! (nothing worked)
I though maybe it's related to the overheating issue and immediately touched the back of the phone and it was pretty cool like always!
I have decided to leave it alone for a few minutes, so maybe it become responsive again...
However when I grabbed the phone again it was uncomfortably hot and still unresponsive!
I had to press power and volume up buttons to reset the phone! after a few minutes I turned it on and everything was normal!
Well my question is, does the phone turn off automatically reaching certain temperature even in that situation (unresponsive) to prevent hardware damage?
I'm worried if my phone is damaged somehow....

Oukitel K10000 MAX poweroff when screen goes off

Got this phone, but it has odd fault. If phone is not connected to charger, it power off after few seconds screen goes off. If it's connected to charger or using application to prevent screen to go off, phone stays on.
Battery is full and I've used it empty once. Phone reset does not fix problem
Phone is naturally unusable as a cellphone now. Have you ever seen behavior like this before?
youtube.
com/watch?v=-yf0k5cgdrI
Is there anything I can do myself?
Reset and flashed phone multiple times, fault stays. You should avoid Oukitel.
I just lost 200€ buying faulty phone from Aliexpress. :/

Intermittent Unresponsive Touch (Up to at least half a day)

Hi,
Last Thursday night my pixel 2 became unresponsive, I rebooted and it worked again, then it became unresponsive again, I rebooted but to no avail. The phone does have a large chunk of glass missing in the bottom left below the screen (https://drive.google.com/open?id=1NdlE-Xrwa9rPPGpMXT47FHqLWfW0MHd2), this happened due to a drop some time ago. At the time I tried booting into safe mode which didn't help, I also tried to go into recovery mode to factory reset the phone to rule out any software issues, but the phone wouldn't enter recovery mode, it just would go straight to the "google" logo and then would boot loop and sometime it would break the loop and just boot as normal. This unresponsive behaviour has been demonstrated before, but a reboot sufficed.
As the phone appeared to be functioning otherwise, I decided to order a replacement screen (I haven't received it yet), although I do find the ability to not go into recovery mode concerning.
Also, when I say unresponsive I mean just to touch, the fingerprint reader still lets me pull down the notification bar; the phone is not frozen. One final thing and I'm sure if it's related, is that I was getting some crackles and pops when using my headphones with the provided 3.5 to USB C, I assumed it was down to the cable getting damaged, but it might also be to do with phone's damage.
I hadn't touched my phone all weekend, I turned it back on last night so my alarm would go off this morning. It did and I was to my surprise responsive. I left my phone to sit on my desk over the weekend and I believe the battery drained completely and it turned off, I'm not sure if that complete battery drain was the reset it needed or what. It was definitely unresponsive for half a day of me rebooting, but who know how long that would have went on for.
I'm not sure now if I should replace the screen, I think I will just due to the physical damage the phone has, but I would want to return the screen if the phone is on the brink of being unusable regardless of the screen/digitizer hardware. As clearly the hardware does still work.
Any advice/help would be much appreciated

Poco X3 NFC - Can't access bootloader, fastboot or system (bootloop)

Hi. My close friend has this issue. I'm posting this because she can't figure it out by herself. A month ago, her phone downloaded an update and she installed it. Since then, the phone has restarted by itself without any reason, just random restarts and the frequency of restarts was more frequent with each day. Fast forward to this day and the phone is constantly turning up and shows the POCO logo and restarts by itself. This loop is not ending until the battery is completely dead. When trying to access fastboot or recovery mode, she can get there but only for few seconds (until the device restarts again) which is not enough time to make any changes / factory reset. She did not accessed developer tools in system, so the bootloader is still locked. Holding down power button does nothing. ONE SINGLE UPDATE screwed up whole phone. Can't do ****. There's no SD card or SIM card in the slot. Is there any "hack" to stop the phone from restarting itself? Note when the battery is completely empty and she plugs the charger, the whole nightmare starts again. I'm lost. Did you guys have any ideas what to do? Or is the repair centre only solution? (She cracked glass of the display, i'm not sure if that voids warranty. [it's not glass COVER, it's the glass which is part of the display])
Is this device unlocked? If not, then RMA.
If it is, my best guess is to get the device into recovery (or fastboot?) and immediately connect to PC.
If it holds, leave it there as it will charge, although at much slower rate.
When charged, use TWRP to try to reboot to system.
If it doesn't work, then factory reset.
Sadly, i can not get to recovery because in about 2 seconds the device will reboot. There's literally no time to make any changes - factory reset. Also the device is not unlocked. I hope RMA accept the phone even though it has cracked screen . Thanks for response anyway
Then RMA it is. If you're in EU they'll have to take it, even with the cracked screen.
But does the reboot happen even when connected to PC? Two seconds is enough to plug it in if you're fast...
Yeah, we tried every possible idea we can think of. Pressing the toggle button from different angles with different intensity to make sure it isn't stuck inside, covering up the proximity sensor (yeah makes no sense but even that we tried, lol). Tried with connected to PC as with classical charging brick. No change. Back in those days where smartphones doesn't have unibody construction and you were able to take down the back cover and remove battery it was way simple. Nowadays it's not possible to stop the phone from booting itself until battery is completely empty. My friend says the problem started about month ago, when the phone annouced that there is an update available so she downloaded it and installed it. Before that, there was no problem with the phone whatsoever. Maybe it's caused by some kind of virus but IDK which apps she was using. She didn't have rooted phone not unlocked bootloader in developer tools. Also i googled that it may be caused by "Airtel Thanks" app which she didn't have installed aswell. I will keep this thread updated as what happend to the phone cause i'm also interested what went wrong and to help future users who will struggle with this problem a solution. Thank you.
CaptainFedora, did you solve the problem? I have the same issue...
Yeah, actually. Sorry for not posting the answer although it was definitely her fault. It was the power button being pressed down (which made continuous bootloop). But the button was somehow pressed deep into the phone's body. So complete dissasembly was needed.
Btw. my friend lives in other country so we discussed this problem over internet. If i could have the phone physically with me i would definitely know what was the problem.
Hi.
Yesterday I had the same problem, the device kept restarting every 10 seconds, it didn't even come to any screen besides the first one with the POCO logo in yellow.
Things I tried that did NOT work:
restart
hard restart
fastboot (it did enter the fastboot mode, but only showing the picture of the 2 robots and after 10 seconds restarting again to the POCO logo image)
plug it to power
plug it to computer
After 3 hours of continuous restarting and trying anything I could find in the internet and I could imagine of (except extracting the battery because it seemed complicated and difficult to revert), I tried randomly something that miraculously worked...don't ask me why.
pressing the power button shortly and quickly around 30 times (it might have worked after 10 or 20, but I just kept doing it a little longer
Afterwards it just started as if nothing had happened...doesn't make any sense, but I just wanted to tell you in case you are in a similar situation and desperate to not lose all the images and videos as I was yesterday.

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