Display out of order - Redmi K20 Pro / Xiaomi Mi 9T Pro Questions & Answe

Hello everyone.
I recently had an unfortunate accident with my phone(dropped into water) and as result my display is not working anymore. As I connect the phone to computer it's working, and also adb can connect it.
My question:as my display is out of order,is any way I can test my GPU for normal operation using an computer,because I do not want to buy a new display and find out later that also my GPU have problems.
I am an K20 pro user with EU rom installed.
Best regards.

I don't think the gpu is having problems cause it lives on the same chip as cpu, isp,dsp, modem etc & if it's not working then others won't be working too as you wouldn't get a connection from pc like adb etc which you're getting as mentioned in the post..
Thus most likely it's a display or cable fault.
No way to test it at home, take it to a technician

Thanks for the answer.
Best regards.

Related

Milestone Wi-fi/3G connects but not send data

Hello there,
As a newcomer, I found out these foruns filled up with great information and guys willing to help, so came here to ask for some help ....I am both excited and dissapointed with my brand new Milestone. Bought the handset about 5 days ago, which came with Android 2.0. Then updated it straight away to version 2.1 via "Motorola Software Update". So far so good ...here´s the problem I am facing :
While connected to wi-fi or 3g(issue is easier to notice due to 3G icon at the task bar, which points out in those small arrows data that is being sent/received) phone stops to receive data out of the blue. All connectios are cut off(it also happens when the handset is locked up). Some basic trouble shooting i did:
- tested all pcs connected to the same wi-fi network. No issues detected for these
- reset wi-fi router configs. Didn´t work
- tried other wi-fi router. Presented same issue
- swapped another carrier chip to test 3g connection. Presented the same issue
- tested my GSM chip on ther phone. Worked properly
- Reset phone to default settings. This time the connection took longer to drop, like 30 minutes, instead of the usual 10 minutes. After the first drop, it´s started behaving the same way again.​
It seems pretty much that there an issue going on here (obvious...hehehe). I am considering the following:
- Might be a software issue. So, right now i am downgrading it back to 2.0 version, check if it works properly and then move to 2.1 hopping to get the issue fixed.
- Use retailer warranty and claim for a new phone =/​
Could you guys help me out ??
Thanks in advance and Best Regards !!!
Guys, after downgrading version to 2.0, phone stills presenting the same issue. I think it´s turning into hardware issue =/....does anyone have a clue about it?
Thanks and Best Regards!!!

Main phone or not?

Just a question to all the Kaiser users out there.
Do you use the Kaiser with only Android installed as your main phone?
Those that do, have you had any "bad" experiences while using the phone that are NOT caused by network discrepancies (i.e.: dropped calls, bad signal, etc.)?
I ask because I do use mine as my main form of communication on a daily basis, and I had my first dropped call today due to a hard lock. This is after almost a year of use, on the same phone, in different parts of the country with only a couple of days of non-use for screen replacement (scratched/damaged touchscreen).
I know we're all hanging on to old technology for different reasons, wether it be cost, availability, or that certain "wow" factor that comes from completely changing something that was never meant to be changed. I have become fond of my Kaisers for obvious reasons, but if I cannot trust it when I need it I may need to move on.
Thoughts?
I use it as the main phone . I dont have any problems except the camera and the WiFi . Hope to get it rectified soon though :/
TheMadxtremist said:
I use it as the main phone . I dont have any problems except the camera and the WiFi . Hope to get it rectified soon though :/
Click to expand...
Click to collapse
Man, you still didn't manage to get WiFi to work ?
Dude my kernel !!
and because of exams i cant get that repaired !!
IDK if your kernel is the issue or not because the radio rom also has a lot to do with some aspects of the hardware controls (phone, wifi, audio, camera, etc.).
Other than checking your wifi.ko file with root explorer or some other text viewer, the only option is to change your rom. I have had a 99% success rate with my Kaiser using only Scoots kernel with 25mb of cache, the 8/29/11 rom from sourceforge and LauncherPro plus (from my personal stash). I have the kernel setting the clock to 500MHz on start up and I usually end up underclocking to 480 for a week or so to check stability against the previous weeks settings.
My camera works, my wifi works, bluetooth works, tethering/hot spot works, but video doesn't (not like I'll EVER use this thing for videos)...
PoXFreak said:
Just a question to all the Kaiser users out there.
Do you use the Kaiser with only Android installed as your main phone?
Those that do, have you had any "bad" experiences while using the phone that are NOT caused by network discrepancies (i.e.: dropped calls, bad signal, etc.)?
I ask because I do use mine as my main form of communication on a daily basis, and I had my first dropped call today due to a hard lock. This is after almost a year of use, on the same phone, in different parts of the country with only a couple of days of non-use for screen replacement (scratched/damaged touchscreen).
I know we're all hanging on to old technology for different reasons, wether it be cost, availability, or that certain "wow" factor that comes from completely changing something that was never meant to be changed. I have become fond of my Kaisers for obvious reasons, but if I cannot trust it when I need it I may need to move on.
Thoughts?
Click to expand...
Click to collapse
Hi!
I use it as my main phone. After the imap push deactivation i hadn't got any hard lock.
But i use gmail sync, and sometimes i got a screen of death. But it's very very rare (maybe one in a month). I think if i didn't use anything thats related to 3G network, this lock up wouldn't appear.
This is my work phone so it must be stable. I'm satisfied with it.

Wifi, Wifi tethering and Bluetooth is not working

Hi,
I have Xperia ZR C5503 phone about a year. Until 2 months ago I was using Android 4.3. When Lollipop update distributed I upgraded it to 5.0.2.(official)
But sometime after the upgrade my phone started not connecting wifi. It sees the available networks but not connecting them. The signal drops to lowest level about a second while trying to connect and it fails. Also I was using my phone's wifi tethering feature to share my internet to my pc. However wifi tethering is also not working. I enable it but I think it can't work as router. And lastly, I tried to send a file to my phone via bluetooth and it also enables but no other device sees it. I also have low sound on the phone and I can't hear people I am talking to.
So I got frustrated this saturday and downgraded to official 4.4.4. But it was same. Later I unlocked the bootloader and rooted my phone, installed recovery software. With that recovery mode I cleared all caches but the problem still countinued. Lastly I installed an unofficial modified kitkat to my phone but those problems still appears. I don't know why this phone is so problematic for me. I don't know if it is software related or hardware related. Now that my warranty is no longer valid.
Could you give me some ideas to attempt to solve these issues?
llama50 said:
Hi,
I have Xperia ZR C5503 phone about a year. Until 2 months ago I was using Android 4.3. When Lollipop update distributed I upgraded it to 5.0.2.(official)
But sometime after the upgrade my phone started not connecting wifi. It sees the available networks but not connecting them. The signal drops to lowest level about a second while trying to connect and it fails. Also I was using my phone's wifi tethering feature to share my internet to my pc. However wifi tethering is also not working. I enable it but I think it can't work as router. And lastly, I tried to send a file to my phone via bluetooth and it also enables but no other device sees it. I also have low sound on the phone and I can't hear people I am talking to.
So I got frustrated this saturday and downgraded to official 4.4.4. But it was same. Later I unlocked the bootloader and rooted my phone, installed recovery software. With that recovery mode I cleared all caches but the problem still countinued. Lastly I installed an unofficial modified kitkat to my phone but those problems still appears. I don't know why this phone is so problematic for me. I don't know if it is software related or hardware related. Now that my warranty is no longer valid.
Could you give me some ideas to attempt to solve these issues?
Click to expand...
Click to collapse
i think you must have dropped the phone because wifi and blutooth hardware in sony xperia zr is delicate , i too have dropped phone 4-5 time but still i dont have any problem with my cell , approach sony service centre because i heard may problem of XZR problem of bluetooth & Wifi after mobile accidents
rkumbhar said:
i think you must have dropped the phone because wifi and blutooth hardware in sony xperia zr is delicate , i too have dropped phone 4-5 time but still i dont have any problem with my cell , approach sony service centre because i heard may problem of XZR problem of bluetooth & Wifi after mobile accidents
Click to expand...
Click to collapse
Hi,
I had dropped my phone maybe 1 or 2 times but not from high heights.(~ a meter) But that was more than 5 months ago. I am having this issue since last 2 months and I am sure that I didn't drop or harm my phone in any way. However I wash my phone, do you think that could cause that? Just effecting wifi and bluetooth components?
It's not true about dropping the phone make that errors appear, there are many people with same issues, this phone have manufacturing problems, it's not software
My brother have same problem and he never dropped the phone. Just take a look in Sony forums.
Btw, my brother's phone lost Bluetooth connection, NFC, WiFi, Sometimes WiFi works making some pressing in the NFC spot some seconds, but sucks anyway :/
rickymanx said:
It's not true about dropping the phone make that errors appear, there are many people with same issues, this phone have manufacturing problems, it's not software
My brother have same problem and he never dropped the phone. Just take a look in Sony forums.
Btw, my brother's phone lost Bluetooth connection, NFC, WiFi, Sometimes WiFi works making some pressing in the NFC spot some seconds, but sucks anyway :/
Click to expand...
Click to collapse
How can i make the wifi stable? it drops in and out sometimes.
Wifi problem
my sony xperia zr has the same wifi problem it says scanning trys to connect the signal drops and again starts scanning..
I stopped the wifi service and restarted my phone and the wifi worked for a day and again the same proble.
Do anyone has a solution for this??
I have been facing the issue of wifi not connecting, since my upgrade to 5.1.1.
My research has led me to believe that the issue may be software based. However I'm not an expert in the field. And i was thinking of downgrading back to an older version of lollipop when the wifi was not dropping.
Can anyone advise on whether this may be a smart move, or a completely useless one?
Also is there a diagnostic protocol I can go through that could help me figure out for sure whether my wifi is busted physically, as some of you suggest here.
Thanks
Josette
I've tried the method "settings global put tether_dun_required 0" but when i reboot my Z5, the value comes back to 1 ... (and of course wifi tethering is not working, going thru USB is ok)
I'm discussing various points here. Check out everyone of this point and get a fair idea from where problem is originating.
1) Go to WiFi Settings > Keep wifi awake during sleep. Here the string value should be "Always"
2) Under stock firmware there are numerous battery optimisation. Some of them kill WiFi so battery can saved. Now disable this features if you want no drops in WiFi.
3) If both of don't work, head over to Xperia ZR General > Search for your specific device FTF. Flash it via flash tool. This should reset all wifi drivers. Don't opt or apply any battery features and use WiFi. If still issue exits then you're in bad luck.
4) Check for other WiFi access points. Check your own router's webpanel and see somewhere broadcasting and multicast signals are ticked. Also check your WiFi is at 100% of it's performance ( 100% transmit power)
5) Hardware issue. Most of the software part is not causing issues so it's safe to say a hardware issue is causing this. Now, long time ago when 5.0 was released for our device I read article regarding ZR. The user had constant WiFi drops. His issue was that his WiFi soldering was poor inside hardware. He soldered it again and his wifi drops were no longer a problem.
People also experience various bluetooth/tethering issue. It's important that people should gain knowledge about firmware flashing techniques so that device would get reset and you yourself could diagnose the problem. 1 in 0.7k unit has software/hardware issue in manufacturing. Sony provides diagnostic app, search in play store ( I'm not sure about this). Hope this answer helps many.
hii.. so did u get any solution for the problem ?
i am facing this problem since one month. i tried rebooting my phone many times. i even tried factory reset. but nothing has worked till know.
if u have any solution please inform me.thanku
Wifi Issue.
Hello Guys,
I have same issue in wifi after 1.5 Year of phone. Can you please help me on that. Does any one knows any other technician are repairing this phone? as SONY says they are not able to repair phone which even they developed. I do n't why such phones developed.
1. I have repaired phone using PCC.
2. tried reset
3. tried without stamina mode
4. tried with wifimanager app
but nothing works....
If you guys any suggestion any hope please let me know.
Thanks.

Problems with the Mi Mix

Hi All,
I am considering getting a Mi Mix. I was checking around for general issues or problems with the phone but so far I found only rare issues on the hardware itself. Did you encountered big issues with the Mi Mix?`
I plan to use it as a tablet to play games and read books, I don't plan to use it as a phone or for the camera (which I understood is bad). What do you think, would this work?
Thanks,
Marius
Truth be told, the camera is indeed as in the reviews - a complete misunderstanding.
Apart from that, this is one of the sweetest (albeit most slippery) pieces of tech I've ever held.
The performance is not stellar, but really great nonetheless - including gaming & the screen is a sight to behold.
You need to get used to the speaker during calls. Networking/connection is mostly OK - I get LTE in the EU but have experienced random disconnections. Nothing to be concerned about. GPS & WIFI are nothing to write hime about, but OK.
USB transfer is slow though.
I would still recommend it nethertless, & 10x over a Galaxy S8(+).
Camera is a pain... all other stuff is very good...
4G : if you knwo your carrier band everything will work like a charm...
CPU / GPU : SD821 still make job in 2017... user interface is fluid, gaming is fluid...
About USB, no any trouble here about speed...
BT, Wifi, GPS, NFC, etc... all works like a charm...
Custom ROM, we have some choice here then, it's a good phone if ur are not a selfie/picture fanatic...

Redmi 4x trouble with connection and heat

Hello fellow members. I`ve stumbled upon a trouble with my Redmi 4X. I'd like to ask you if someone had similar problems with his Xiaomi. But first thing first...
I`ve dropped my phone few days ago. Guess what - broken screen :crying:. I did some research and decided to repair it on my own. I ordered orginial replacement kit (LCD + digitizer), watched few videos "how to" and I made it. But.
It seems that now I have some problems with network. Signal strength varies between full and the lowest (on 4G), but it feels like it's always the lowest. The internet is so slow, calling and sending messages is pure luck. Sometimes you can send or call, sometimes it's like out of range. I`ve tried setting "only 3g" setting, but it doesn't help. Factory reset didn't help aswell.
Additionally, the phone is overheating. I think it may be associated with the network problem, since phone can't find himself in range of mobile operator.
I called mobile operator and they didn't do anything, everything seems to be as before.
The phone is updated to the most recent OS (Global). I don`t have any necessary or strange apps, nor root or custom rom.
Before the change of LCD everything was running smoothly.
So, did any of you guys had some similar troubles with his/hers xiaomi? Could I broke something during the replacement? I think not, I was extremely careful, assembled everything as it should be but still..
Hope you guys could figure something out, since I`m really out of my mind what is wrong now.
Thanks!
dawid5210 said:
it feels like it's always the lowest. The internet is so slow, calling and sending messages is pure luck. Sometimes you can send or call, sometimes it's like out of range. I`ve tried setting "only 3g" setting, but it doesn't help. Factory reset didn't help aswell. Additionally, the phone is overheating.
Click to expand...
Click to collapse
Hi, the poor reception and overheating symptoms are typical of bad antenna or its connection, which were probably damaged during the impact. Without an antenna, RF transmitter has nowhere to dissipate its energy, hence internal overheating.
Please examine the PCB-antenna pairs of contacts on both sides of the connection. Good luck...
:highfive:
Try switching between preferred network 4G/3G/2G and see if you face the same issue.
you can also try using different network carrier sim into your device and your sim cars in other device and see if this issue persist
if issue persist try reconnecting antenna cable.

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