Data Connection Problem - Redmi K20 / Xiaomi Mi 9T Questions & Answers

Hello everyone, suddenly the data connection of my xiaomi Mi9t/ K20 keeps restarting automatically. Even during a call it switches off and I see the "no signal" symbol on the data connection icon.
It seems to me that when I use more bandwidth, the data connection restarts much more often (when I install a heavy application).
This also happens when the phone is perfectly still, so in my opinion it's a software problem, not a hardware one. In your opinion, if I flash the official ROM again, can the problem be solved?
Attached is the video of my problem.
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Thanks!

What version, which region, have you tried anything yet?

yaro666 said:
What version, which region, have you tried anything yet?
Click to expand...
Click to collapse
Hi! my phone is European (QFJEUXM) and I have MIUI 12.0.5.
I tried to reset the wifi, mobile data and bluetooth.
Since the problem was still there, I decided to format the phone to the factory data. But unfortunately for me nothing has changed, the problem is still there.

Related

[Q] HTC data connection freezing.

Hello all,
Not sure if anyone else is having this problem.
First of all, better to mention what my Aria is running on:
Stock ROM unrooted. Updated to Froyo from HTC via FOTA. I'm not located in the US therefore my phone isn't under AT&T which many here are. My ROM is strictly HTC's Asia's ROM.
Now I don't have much in a way of problems with my phone, its just odd to me that every once in a while (around once every week or so) I need to reboot my phone. This is because for some strange reason, my phone won't connect to the data network (3G) or it shows that it is connected but no data activity (even after I've instructed the phone to sync all information, i.e. weather, emails, etc). I've tried switching on/off the data network connection and also have tried switching between airplane modes on/off (in hopes to reset something) but nothing works.
I'm not sure if this is an inherent problem to the Aria's 2.2 update or if there is something wrong with my carrier, however the problem is ALWAYS FIXED right after a fresh reboot.
Anyone have any thoughts on this?
*#*#4636#*#*
Phone information. Set preferred network.
Try switching between the different options.
Sent from my HTC Liberty using XDA App
Thanks for the hint thinkhope. I'll try your suggestion. May I ask what you think the problem may be?
Update: I tried it for a couple of days and I still get the same problem. I tried switching between preferred networks but the problem persists. Quick reboot and once again, fixed.
I also have this same problem, stock/custom ROM no matter which ROM the problem is still there, up to a point that made me wanna smash my phone on the ground. I tried to use my SIM card on my wife's SGS and seems like no such problems faced. Is this a common problem for HTC phones?

[Q] uk mz601 xoom 3g connection failure

Hey guys, I'm totally confused what's wrong with my xoom mobile connection. The sim card and 3g work fine when I put the sim into my htc cell, however on the tablet it refuses to work despite the dynamic tray indication (3g changes to hsdpa or to edge, even the up- and download arrows appear), though the indicator color is gray like it doesnt work. I have no idea what's wrong, I tried all the mobile connection settings, still nothing seems to get better. The problem appeared several days after my xoom was updated to official 3.1 (not rooted btw).
It worked fine before and after the update. I rebooted the xoom like 10 times, still no effect, same for factory reseting the xoom twice. In addition, the device network info shows that IP address is unknown.
What can I do to fix the connection? I'd appreciate any help.
seriously guys, no ideas?
I have a similar issue with my Optus MZ601 where it starts H data and then suddenly drops out, ending with the modem seemingly rebooting... Not sure whether this is my coverage in Aus, or whether there are other issues. I tend to suspect "Fast Dormancy" is on and playing a part in all of this, however with out a dialer, there's no way I can do the *#9900# to get into the menu and turn it off to test my theory.
Same problem
I'm having the same issues, It started a few days ago. Updated to 3.1 about a month ago with no problems.
Now I can't connect with 3G. Wifi works fine. tried everything from soft resets to full recovery. My xoom recognizes the sim and shows data connectivity but still can't connect.
Is there a problem with the update?
wow finally I'm not the only one with such problem.
did you guys reinstalled the stock 3.0.1 image? cause that's what I'm intending to do now. the only thing that stops me so far is that I'm not completely sure whether it will void my warranty or not.
I just don't want to find myself with a crippled xoom which moto refuses to take back >_>

[Q] Note4 loosing data connection

Dear Friends,
has some who owned note 4 faced a continuous loosing data connection?
I have been facing this issue for the passed one week till now, I have tried to format the device but the problem is still there, I have not done anything to the device.
I called my ISP and they said that there is no problem with your sim card.
please advise if anyone of you had similar issue.
thanks
silverado said:
Dear Friends,
has some who owned note 4 faced a continuous loosing data connection?
I have been facing this issue for the passed one week till now, I have tried to format the device but the problem is still there, I have not done anything to the device.
I called my ISP and they said that there is no problem with your sim card.
please advise if anyone of you had similar issue.
thanks
Click to expand...
Click to collapse
I've just experienced this today on my 1 day old N910C, I'm on 4G and suddenly earlier today my 4G mobile data indicator disappeared but it still showing the usual signal bars. Tested browsing, no mobile data it said. Tried putting it to Airplane mode then back to normal, didn't bring mobile data back. Rebooted it, then it's working again.
Not yet to see this problem but my friend's Note 4 had this problem. In the end he brought it to the service center and they replace the mainboard. Still wait and see if it fixes the problem.
it happened me before on other samsung devices too. generally an update fixes it but could be hardware problem too.
Hopefully its software related ive seen a slew of note 4s have this issue both variants included.. its annoying to say the least
Hi, I just got my phone, may i know whether you guys have resolved the issues?? i need to turn the flight mode on and off a few times to get the data connection back online
I sent back to Samsung services center, it seems that they said they reprogram the software. Will observe and see how it goes.
Mines all good now few updates and new provider all good ?
Hi guys, I've experienced the same issue, the mobile data connection suddenly drops (H+ icon doesn't disappear but the download arrow is off, meaning that there's no inbound traffic) and the only way to have the connection back is to to disable mobile data and than reactivate it. I've updated my phone, I even tried to install firmwares of other countries (different csc) and to change carrier but I haven't solved the problem (same situation on my friend's N4).
Hi
i had a problem with wifi. weak or no connection.
100% solution for my note:
go to settings=>location=>use GPS ONLY.
perhaps it solves also your problem...
Hello all! Just faced the same problem! Losing internet connection. Did anyone find a solution?
Note 4
Yes this is BS. If I go to a place with no data service, then travel back to a place with data service, I have to first disable then re-enable the "Mobile Data" toggle in the settings. It's such BS that this is happening. My note 3 NEVER has this problem. Starting to dislike Samsung's buggy releases.
Same issues..
silverado said:
Dear Friends,
has some who owned note 4 faced a continuous loosing data connection?
I have been facing this issue for the passed one week till now, I have tried to format the device but the problem is still there, I have not done anything to the device.
I called my ISP and they said that there is no problem with your sim card.
please advise if anyone of you had similar issue.
thanks
Click to expand...
Click to collapse
----- got same problem here.. keep drop the signal.. until fedup already.. can someone solve this thing? Need answer.. T_T
Any news on topic? I'm facing with internet on mobile connection, even if bars are full and LTE sign is visible.
I've also noticed some lack of signal during usage, even if I'm constantly in city.

[Q] Random mobile data connection drop problem with S4

Hi there,
First of all, I ran an extensive search over google and also on XDA forums before posting this.
My S4 (I9500) is experiencing random data connection drop problem for some time now. It starts with no data transfer (upload/download arrows not being active), then connection goes from H+ to H, then to 3G, then drops, back to H and continues until I turn off and on MOBILE DATA from toggle buttons. Then it works normal for some random time, then it happens again. Sometimes an hour, sometimes after 5 minutes.
I found this thread , however trying the workaround there by entering the provided code, I get "Connection problem or invalid MMI code". So that fix is not working either. I tried to go in service mode > debug screen > nas control and change revision to Release 5, but it says NOT SUPPORT. Haven't tried the other releases since I dont want to mess with it. I am also aware that the workaround in the above thread is for S2.
When this happens, it is just mobile data, there is no problem with network signal.
Has anyone else experienced something like that on their S4s?
The method you tried using is probably outdated and for a different phone.
Are you sure it isn't your provider?
Did you try another modem?
Lennyz1988 said:
The method you tried using is probably outdated and for a different phone.
Are you sure it isn't your provider?
Did you try another modem?
Click to expand...
Click to collapse
Nope.. I am working for a service provider company. Other people with iPhones in the same location as I am, are not experiencing the same thing. I heard similar problems with other S4 users, but they dont know any workaround either.
I tried both auto connect and WCDMA only options as well. Doesnt make a difference. My S4 doesnt support LTE, so I only have 3 options, third as GSM only, which I don't think it would be a solution.
Only temporarily solution so far, is turning mobile data off and on, which lasts from 5 minutes to 1-2 hours.
Btw my android version is 4.4.2

Nexus 4 5.1 Stock does reconnect to mobile data after disconnect from wifi network

Hi all,
This is my issue:
I'm 2 hours connected to a wifi network, I leave home or work and my nexus 4 does reconnecting with mobile data.
I have read many posts about this, on any roms, but none gives a clear solution.
I had CM12 and Chroma. The same error. I'm back to Stock Rom [5.1] from Google Factory image [clean] and issue persists.
Can you help me please?
---
Device: Nexus 4
ROM name: Android 5.1 Stock from clean install of factory image
ROM version and base: M9615A-CEFWMAZM-2.0.1701.06
Build number: LMY47O
kernel version and its settings: 3.4.0-franco.kernel [email protected] #217 [Default settings] With stock kernel the issue persist.
gruncho said:
Hi all,
This is my issue:
I'm 2 hours connected to a wifi network, I leave home or work and my nexus 4 does reconnecting with mobile data.
I have read many posts about this, on any roms, but none gives a clear solution.
I had CM12 and Chroma. The same error. I'm back to Stock Rom [5.1] from Google Factory image [clean] and issue persists.
Can you help me please?
---
Device: Nexus 4
ROM name: Android 5.1 Stock from clean install of factory image
ROM version and base: M9615A-CEFWMAZM-2.0.1701.06
Build number: LMY47O
kernel version and its settings: 3.4.0-franco.kernel [email protected] #217 [Default settings] With stock kernel the issue persist.
Click to expand...
Click to collapse
What radio are you running? I was seeing the same issue previously on Chroma, bur haven't seen it since updating to the 33/06 hybrid version.
slaughts said:
What radio are you running? I was seeing the same issue previously on Chroma, bur haven't seen it since updating to the 33/06 hybrid version.
Click to expand...
Click to collapse
I'm in Stock radio now. The chroma version was 2015-04-10. I don't know wich radio version.
gruncho said:
I'm in Stock radio now. The chroma version was 2015-04-10. I don't know wich radio version.
Click to expand...
Click to collapse
Hmmmm. I think it was with the 4-10 version that I had the issue, and it may have been resolved with the 4-14 version. I just installed the 4-17 version, but haven't checked if the issue returned. I would try upgrading Chroma, if that is what you are still running.
slaughts said:
Hmmmm. I think it was with the 4-10 version that I had the issue, and it may have been resolved with the 4-14 version. I just installed the 4-17 version, but haven't checked if the issue returned. I would try upgrading Chroma, if that is what you are still running.
Click to expand...
Click to collapse
I'm going to reinstall all apps in my n4 for now with stock ROM. I installed all updates from 4.2.2 image factory with OTA's up to 5.1, to night I still with wifi connection, if tomorrow the issue persists, I will install chroma again.
I got this problem too. I was running chroma, Cm12 and now euphoria and problem is still here. Full wipe doesn't work. In addition to the problems with reconnection I have also huge problem with msm_hsic_host wakelock and I think both problems are related to each other. I'll try different kernels, maybe it will work.
tomekrk92 said:
I got this problem too. I was running chroma, Cm12 and now euphoria and problem is still here. Full wipe doesn't work. In addition to the problems with reconnection I have also huge problem with msm_hsic_host wakelock and I think both problems are related to each other. I'll try different kernels, maybe it will work.
Click to expand...
Click to collapse
I installed stock kernel, and franco kernel. Same result.
My wife has Installed OTA yesterday and remains in wifi all night, today all works fine in her Nexus 4. In my Nexus 4 don't work.
Differences:
Wife: N4 8GB with simyo carrier
Me: N4 16GB with tuenti carrier
Any Ideas?
It seems that the problem occurs only when when you leave the WiFi area, and the phone loses its range. Its not switching connection. When you are connected to wifi and you try to turn it off manually (quick settings etc), it will switch to mobile data connection without problems.
tomekrk92 said:
It seems that the problem occurs only when when you leave the WiFi area, and the phone loses its range. Its not switching connection. When you are connected to wifi and you try to turn it off manually (quick settings etc), it will switch to mobile data connection without problems.
Click to expand...
Click to collapse
is not it, when I spend three hours on wifi, manual transmission does not work. I put the SIM of another carrier works. Is an error with this SIM and this version of Android.
Hi gruncho,
I have exactly the same problem, also with a Nexus 4 from day 1 after installing 5.1. Mine has been installed OTA, having previously 5.0.1. My carrier is pepephone (now using Movistar) which I think is the same as tuenti, the one you have.
I reconnect without problems by changing between 2G / 3G or by selecting Airplane Mode On / Off.
If anyone knows a less manual solution or something I could try please tell.
Thanks a lot
Same issue here on stock 5.1, only reboot helps. Airplane mode, switching radio off, switching cellular data off and on doesn't help.
Can anyone provide some information how to fix this? Would be very grateful.
I flashed chroma rom 4-21. It is based on Android 5.1.1. The issue is solved on this version. I will use this rom until stock 5.1.1 launch.
Arthur Paendragon said:
Hi gruncho,
I have exactly the same problem, also with a Nexus 4 from day 1 after installing 5.1. Mine has been installed OTA, having previously 5.0.1. My carrier is pepephone (now using Movistar) which I think is the same as tuenti, the one you have.
I reconnect without problems by changing between 2G / 3G or by selecting Airplane Mode On / Off.
If anyone knows a less manual solution or something I could try please tell.
Thanks a lot
Click to expand...
Click to collapse
czito said:
Same issue here on stock 5.1, only reboot helps. Airplane mode, switching radio off, switching cellular data off and on doesn't help.
Can anyone provide some information how to fix this? Would be very grateful.
Click to expand...
Click to collapse
If you have the phone rooted, you can install Trigger and create a task that activate airplane mode and deactivate that in a few seconds when you leave any wifi network. I tried this, but in my case, with an android wear device, the watch disconnects every time I leave my home or job wifi.
Hi,
Keeping my fingers crossed for the problem to be solved for everyone in 5.1.1
I thought about creating a task in Tasker that activated airplane mode and deactivated it in a few seconds later after leaving a wifi, but my experience with Tasker is almost null.
I found an application which seems to be working for me. Its name is WifiFixerFree and what it does is trigger a mobile connection for a few seconds, while still connected to wifi.
You can configure the connection interval. I have it set for every 15 minutes and it doesn't seen to drain a lot of battery. By default it shows a lot of notifications, but you can disable all them in one of the configuration screens.
Cannot yet post external links, but the application is in Google Play so it is easy to find from that name.
I installed the application yesterday and the problem has not repeated itself.
Arthur Paendragon said:
Hi,
Keeping my fingers crossed for the problem to be solved for everyone in 5.1.1
I thought about creating a task in Tasker that activated airplane mode and deactivated it in a few seconds later after leaving a wifi, but my experience with Tasker is almost null.
I found an application which seems to be working for me. Its name is WifiFixerFree and what it does is trigger a mobile connection for a few seconds, while still connected to wifi.
You can configure the connection interval. I have it set for every 15 minutes and it doesn't seen to drain a lot of battery. By default it shows a lot of notifications, but you can disable all them in one of the configuration screens.
Cannot yet post external links, but the application is in Google Play so it is easy to find from that name.
I installed the application yesterday and the problem has not repeated itself.
Click to expand...
Click to collapse
I flashed new chroma 4-25 and issue is here again...
I installed this app, but not works for me. I dont know if I do something bad.
Can you tell me about config this app?
gruncho said:
I flashed new chroma 4-25 and issue is here again...
I installed this app, but not works for me. I dont know if I do something bad.
Can you tell me about config this app?
Click to expand...
Click to collapse
When you enter the app, check "Use auto reconnect" and set a trigger interval of N minutes (I wrote 15).
Press the button "Configure notifications" and uncheck the first option: "Show events in notification bar"
I just did that and since then (yesterday afternoon) I have had no more problems of losing the mobile data connection. During the last weekend and on Friday I had those problems every time I left home / work because the phone lost the wifi and so I lost the mobile data.
Arthur Paendragon said:
When you enter the app, check "Use auto reconnect" and set a trigger interval of N minutes (I wrote 15).
Press the button "Configure notifications" and uncheck the first option: "Show events in notification bar"
I just did that and since then (yesterday afternoon) I have had no more problems of losing the mobile data connection. During the last weekend and on Friday I had those problems every time I left home / work because the phone lost the wifi and so I lost the mobile data.
Click to expand...
Click to collapse
Thanks so much, tomorrow I will try this.
Today after flashing the kernel that come with chroma rom again, seems works. :good::good::good:
Same issue here, but I came from a Nexus 4 5.0.1 with LTE enabled.
The problem ocurrs when changing to data after too many hours in Wi-Fi connection (turning Wi-Fi off or leaving the Wi-Fi area).
I installed OTA Android 5.1, then the problem started.
I tried to install stock Android 5.1 factory image (with full wipe), but the problem still persist.
I executed the nexus-4-lte-enabler-v2.12-2.13-UNINSTALLER.zip thinking it's a related issue, but the problem still persists.
Waiting for Android 5.1.1...
I have Pepephone (Movistar) and I'm still using the manual workaround of turning airplane mode on/off or switching some data network setting to regain data connection.
Can anyone provide some information how to fix this?
Thanks a lot.
urbo83 said:
Same issue here, but I came from a Nexus 4 5.0.1 with LTE enabled.
The problem ocurrs when changing to data after too many hours in Wi-Fi connection (turning Wi-Fi off or leaving the Wi-Fi area).
I installed OTA Android 5.1, then the problem started.
I tried to install stock Android 5.1 factory image (with full wipe), but the problem still persist.
I executed the nexus-4-lte-enabler-v2.12-2.13-UNINSTALLER.zip thinking it's a related issue, but the problem still persists.
Waiting for Android 5.1.1...
I have Pepephone (Movistar) and I'm still using the manual workaround of turning airplane mode on/off or switching some data network setting to regain data connection.
Can anyone provide some information how to fix this?
Thanks a lot.
Click to expand...
Click to collapse
You can install Wifi fixer free from play store. This app has resolved the issue... Until google do something

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