K20 Pro VoLte call drop on Sim 1 - Redmi K20 Pro / Xiaomi Mi 9T Pro Questions & Answe

Hi dear friends,
I have a Chinese K20 Pro with unlcoked bootloader and running india firmware 10.3.5.0
Previously I had Huawei Mate 10 Pro working with VoLte flawlessly. but my K20 Pro VoLte option was not present in the menu so i searched a little bit and find following code to re enable the option *#*#86583#*#*
After enabling the volte, to be sure that if it really works, i tested avalablity of internet data when i was talking to someone and it was ok.
But from 2 days ago there were several(if not all the time) that when i got a call or when i call someone just seconds after connecting the connection dropped 4g volte icon disappears and mobile signals goes grey with cross icon on it and after just a seconds it turned on again, it was like i pulled out the sim and insert it again.
I have not any problem if i turn off volte option and i was almost sure that the problem is some incompability between my phone and operator volte but i tried something else too, i switched the sim from sim1 to sim2 and with volte on i don't have any problem so i got confused do i have hardware problem?
Any idea?

Same on me, Telenor Bulgaria.

Krasimir said:
Same on me, Telenor Bulgaria.
Click to expand...
Click to collapse
So it worked for you before but now you have the same problem as me? Or you always have the problem?
Also did you have the same situation with the sim slots?(one is ok another not ok)

Yes, it's working fine last week. I will try swaping cards. Maybe it's a software related, updated to last beta from xiaomi.eu on saturday. Problem arrived after that.

Krasimir said:
Yes, it's working fine last week. I will try swaping cards. Maybe it's a software related, updated to last beta from xiaomi.eu on saturday. Problem arrived after that.
Click to expand...
Click to collapse
Please swap the sim cards and test, it is almost 2 days that volte on sim 2 is working ok.
Edit 1: it is almost 4 days that i use my phone with volte ON using sim 2 no call drop no problem, can anybody confirm the same behaviour?

It was same with me, also Telenor Bulgaria.
I switched to sim 2 after reading here a few days ago and the problem seems to be resolved.
Before I had to restart the phone in about 2 days, because I just stopped hearing the person who calls me. Or switch to 3G. But to use VoLte again I had to restart. It just happened every other day...
Now everything seems to be fine... with that problem.
I still have the problem of not being able to use the Google Assistant to unlock my phone and can't turn on location history on Google maps.
I guess it's because of the Chinese ROM.
Anyway thanks for showing me a way to use VoLte less struggling

fankata said:
It was same with me, also Telenor Bulgaria.
I switched to sim 2 after reading here a few days ago and the problem seems to be resolved.
Before I had to restart the phone in about 2 days, because I just stopped hearing the person who calls me. Or switch to 3G. But to use VoLte again I had to restart. It just happened every other day...
Now everything seems to be fine... with that problem.
I still have the problem of not being able to use the Google Assistant to unlock my phone and can't turn on location history on Google maps.
I guess it's because of the Chinese ROM.
Anyway thanks for showing me a way to use VoLte less struggling
Click to expand...
Click to collapse
Glad that it helped, but it is strange problem
By the way i didn't use chinese rom, i am using indian rom which is almost the same as global rom but the device by default was from china and was running chinese rom, my theory is that devices came from china have some incompability with the bands or volte with other countries...

Volte disappearing and data & voice calls get disconnected.
I bought my k20 pro last month & last week all of a sudden volte got disconnected & appeared again.
Then after few moments my friend called me and all of a sudden call ended & I saw No network on the screen & after a few seconds volte was enabled again automatically.
At , First I thought it was just data or APN problem.
Then the things got worse when I was playing PUBG game and volte disappeared again and same thing happened again and again every 6 to 7 minutes .
I am frustrated of this , can you get me out of this mess , can you tell me what should I do to solve this issue
Thank you

Munyb said:
I bought my k20 pro last month & last week all of a sudden volte got disconnected & appeared again.
Then after few moments my friend called me and all of a sudden call ended & I saw No network on the screen & after a few seconds volte was enabled again automatically.
At , First I thought it was just data or APN problem.
Then the things got worse when I was playing PUBG game and volte disappeared again and same thing happened again and again every 6 to 7 minutes .
I am frustrated of this , can you get me out of this mess , can you tell me what should I do to solve this issue
Thank you
Click to expand...
Click to collapse
It seems nothing we can do about this, just disabling volte solves the problem.
My guess is that K20 Pro modem is optimized for China's cellphone towers so volte is not quite compatible with other countries. it is just my guess.

Related

[Q] N6 - No incoming & outgoing Calls, mobile data gone.

Having my Nexus 6 for almost a month. Things working perfectly in the starting(or after reset), but after two or three days, No incoming calls, no outgoing calls. No mobile data. Cant realy tell it as a mobile sometimes. Wifi is working good always. After reset, it is working properly for two or three days. Whenever it is not working, I am able to see a !-mark near the tower bar.
My mobile always connected to 4G when no wifi.
No Custom ROMS and no root. Plain Android given by google.
Anyone having this issue. Any suggestion?
Go get a new SIM.
Sent from my Nexus 6
I was begining to think i was the only one who had this problem!
Yesterday morning i woke up and to my suprise my signal bar had a (!) it it but it was still displaying my regual signal level.
I switched my wifi of and i couldnt get a data connection just the (!) sign. I got my girlfreind to give me a ring and see if a
call would go through which it didnt it just said that i was unavalible. I then desided that a reboot might sort the problem
but when i my phone booted back up i was presented with the holow triangle signal icon to say that i had to signal. I then
popped my simacard out thinking it could have just been a bit of dust on it. I gave it a little bit of a dust of and popped it back
into my phone and i was given the same no signal and emergency calls only yet it was picking up that there was a simcard inserted.
The day before i had flashed the alpha version of PA so my next thought was that this would be a ROM bug and went ahead and
flashed chroma which i was using prior to PA and i had had no issues with. Held my fingers crossed as it booted up but much to my
dismay i was greated with the same no signal problem but i went into the settings and searched for networks. Three was one of
the network it had picke dup so i tryed to reconnect to it but i got the toast to tell me i couldnt connectto the network and to
try again later. I checked the APN settings and it had automatically grabbed threes APN from the sim card so at this stage i was
completly baffled by them problem.
My next move was to try my sim in my girlfreinds phone and what do you know it worked a charm. As a last shot to check everything
was okay and i was upto date on my bills etc i gave three a ring and they told me there was nothing wrong with my sim and everything
was working as it should be and that it was a problem with my phone.
That brings me to the point i am at now completly baffled as to the problem and slightly angry at the 2 week old phone that had been working
perfectly up until now has suddnely desided to stop with no warning.
So you are not the only one and i expect their are more of us. I am going to flash the offical stock rom from google and see if that does the
trick but im not holding up much hope i feel like im going to have to contact google and find out where the problem lies.
New SIM which is working good in other mobiles
SilkyJohnson said:
Go get a new SIM.
Sent from my Nexus 6
Click to expand...
Click to collapse
I got this as new nano SIM from the retailer and seems like working in all other mobiles except Nexus 6. Also I can see lot of people having the same issue with Sprint Provided in US. One more Victim replied too.
greatleo said:
I got this as new nano SIM from the retailer and seems like working in all other mobiles except Nexus 6. Also I can see lot of people having the same issue with Sprint Provided in US. One more Victim replied too.
Click to expand...
Click to collapse
i reverted back to complete stock using the image from there site to no luck so i relocked the bootloader and took it back to the carphonewarehouse and they straight swapped it for a new one which is working perfectly
My sim died after a month. My calling went out and then only lte worked no 3g. Got card replaced and it works perfect now. I have US Cellular.
I've posted this in few other threads also, but I had also problem where I only had tgt exclamation mark no matter what I did. I solved the problem by waiting like 5sec before inputting my pin-code. If I input my pin code too fast after a boot, it will open my phone, but won't give me cellural network. This seems to happen in every ROM I've tried
Hi,
Solved the issue. Working fine after enabling request for SIM Pin and set my sim pin.
Usually i disable sim pin lock to have uninterrupted boot. But with ROM this is not working.
Enabling SIM pin request solves the issue.
Is this problem with carrier or Android L?
Sent from my Nexus 6 using XDA Free mobile app
greatleo said:
Hi,
Solved the issue. Working fine after enabling request for SIM Pin and set my sim pin.
Usually i disable sim pin lock to have uninterrupted boot. But with ROM this is not working.
Enabling SIM pin request solves the issue.
Is this problem with carrier or Android L?
Sent from my Nexus 6 using XDA Free mobile app
Click to expand...
Click to collapse
I have not seen this issue on three devices I've owned with Lollipop. So it appears to be a carrier issue?

Mobile data stops working after a while - SM-N920C

Hi everyone. need your advice and opinion.
I am using Note 5 902C for couple of months now. Uptill now, i was using only 1 SIM and the phone was working absolutely fine. Once i inserted a secondary SIM it has developed some odd behavior.
1. this happened once that i stopped receiving calls. when i was told that people are looking for me, i restarted the phone and suddenly i got tons of missed call alerts. no idea why it happened. The problem didn't occur again as yet.
2. more frequent problem is that from time to time, 4G stops working. It only shows uploading arrow but no download. i have to check it constantly to make sure things are working. Whenever this happens, i do the reset via airplane mode. After coming back to life, it starts working again.
Kindly advise what to do? i am not even sure this is because the second SIM.
Waiting for your advise.
Thats such a coincidence, I was googling this exact same problem today and when I did not find anything about it, I thought it might have been a problem with my network. I am having the exact same problem of the 3G turning off and only showing the upload arrow, except my Note 5 is the single SIM variant not the dual one.
kiss_my_asthma_99 said:
Thats such a coincidence, I was googling this exact same problem today and when I did not find anything about it, I thought it might have been a problem with my network. I am having the exact same problem except my Note 5 is the single SIM variant not the dual one.
Click to expand...
Click to collapse
so if you having the same issue with single sim, that mine is prolly not because of dual sim.
amnd79 said:
so if you having the same issue with single sim, that mine is prolly not because of dual sim.
Click to expand...
Click to collapse
Nop, I don't think it has anything to do with it. A software bug maybe?

Mi 8 - No SIM/WIFI, random reboots

Hello there
Long story short, I updated my Mi 8 (Global Version) to MIUI 11.0.1.0 before the update got suspended. A few weeks ago, my network provider had some technical difficulties, so I lost the signal a few times throughout the day.
A few days later it happened again, even though my provider fixed everything.
But this time I also lost my WiFi connection and I didn't get it back to work.
After rebooting, my SIM did not get recognized and my phone didn't want to connect to the WiFi network
After rebooting it over and over again for like 10mins, everything worked again.
But this issue occured every day since then.
A few days ago I updated my phone to MIUI 11.0.3.0 and the issue was gone for a day or two.
But now I am experiencing those things again, but this time it usually takes a few seconds and the sim activation service starts again and everything works fine for the next few hours until it happens again.
I will provide a full log later, hopefully someone can figure something out.
I really don't know whether it's a software or hardware issue, but losing signal and WiFi like every hour is driving me crazy and I'd like to avoid resetting my phone....
Oh and by the way, I don't have TWRP installed and it's not rooted or anything else.
Hi,
With me it happened exactly the same, I already paid to solve it and nobody has done it until now. I already lost hope of ever being able to repair
I've been having the same problem.
It's been incredibly frustrating.
[Update:] I went to a local repair shop, it's a hardware related issue.
For everyone else having this issue, try the USSD Code *#06#
If you receive an error, your Baseband Chip may be broken.
At least that's what I was told.
I have unknown baseband, did you replace the baseband chip?
if I put *#06# (no sim card in phone) it just shows up blank white pop-up with label IMEI, but no IMEI number or numbers or nothing else.
Mi8 no signal SIM/WIFI
Hello again
Same problem to my Mi8
When I tap *#06# show my MEID, IMEI1 and IMEI 2
Did you solve the problem ?!
Good morning. I have an MI8 MIUI 11, when I insert the SIM it recognizes it and disconnects itself constantly, the connection is not stable, when I turn on the wifi with the SIM on, the wifi is constantly disconnected and at times the wifi does not turn on, at some point too only the computer was restarted. When I take out the SIM the wifi works stable and well. Any idea of the problem ?? soft or hard? A technician told me that the problem is the display module, but they tested it without the SIM so I calculate that it is not the issue.
Yes, Hardware problem
Confirmed the problem is the baseband, but this cell phone model has the baseband integrated in the SoC (CPU, GPU, NPU and Ram) all one, it seems that it is a soldering problem

VoLTE enabled but not working

I don't think VOLTE is working for me. Maybe I'm not sure how voLTE works, but on my Nokia 9 and OnePlus 7 Pro I have an icon that says VOLTE.
When I place a call my signal goes from LTE/LTE+ to either 3G/H+. Which I don't think it's supposed to do on VOLTE.
I have:
XQ-AT51
Build Number: 58.0.A.3.170
Google Play System: September 30th 2020
Baseband version: sdx55.rmtefs-00068-13
Carrier: T-MOBILE USA
In Network & Internet > Mobile Network: Enable VoLTE is enabled
In About Phone > SIM Status: Mobile Voice network type is LTE. However, when I'm on a call it says UMTS and HSPA+ for voice and data
In *#*#4636#*#* VoLTE is also enabled.
So, I'm not sure if I'm missing something, but I've never had this issue before on my other phone.
EDIT: Spoke with a technician at T-Mobile and they said everything is fine on my account. Did say to get a new sim card, which didn't fix the issue.
tjk639 said:
I don't think VOLTE is working for me. Maybe I'm not sure how voLTE works, but on my Nokia 9 and OnePlus 7 Pro I have an icon that says VOLTE.
When I place a call my signal goes from LTE/LTE+ to either 3G/H+. Which I don't think it's supposed to do on VOLTE.
I have:
XQ-AT51
Build Number: 58.0.A.3.170
Google Play System: September 30th 2020
Baseband version: sdx55.rmtefs-00068-13
Carrier: T-MOBILE USA
In Network & Internet > Mobile Network: Enable VoLTE is enabled
In About Phone > SIM Status: Mobile Voice network type is LTE. However, when I'm on a call it says UMTS and HSPA+ for voice and data
In *#*#4636#*#* VoLTE is also enabled.
So, I'm not sure if I'm missing something, but I've never had this issue before on my other phone.
EDIT: Spoke with a technician at T-Mobile and they said everything is fine on my account. Did say to get a new sim card, which didn't fix the issue.
Click to expand...
Click to collapse
Yeah bro i have two Xperia 1 IIs and i didn't update the other one but the one i updated seems to have the same issue i even switched carries VOLTE is enabled and not working I'm thinking of factory resetting as last resort I'm contacting Sony first you should do the same. I have same build number as you.
tjk639 said:
I don't think VOLTE is working for me. Maybe I'm not sure how voLTE works, but on my Nokia 9 and OnePlus 7 Pro I have an icon that says VOLTE.
When I place a call my signal goes from LTE/LTE+ to either 3G/H+. Which I don't think it's supposed to do on VOLTE.
I have:
XQ-AT51
Build Number: 58.0.A.3.170
Google Play System: September 30th 2020
Baseband version: sdx55.rmtefs-00068-13
Carrier: T-MOBILE USA
In Network & Internet > Mobile Network: Enable VoLTE is enabled
In About Phone > SIM Status: Mobile Voice network type is LTE. However, when I'm on a call it says UMTS and HSPA+ for voice and data
In *#*#4636#*#* VoLTE is also enabled.
So, I'm not sure if I'm missing something, but I've never had this issue before on my other phone.
EDIT: Spoke with a technician at T-Mobile and they said everything is fine on my account. Did say to get a new sim card, which didn't fix the issue.
Click to expand...
Click to collapse
I software repaired the phone and volte is working again sadly I found no other way that doesn't involve that , I too thought it was my sim card/service and switched carriers only to find the same issue but it's fixed now sucks I wasted my time looking for a solution all this time since November
charlie313 said:
I software repaired the phone and volte is working again sadly I found no other way that doesn't involve that , I too thought it was my sim card/service and switched carriers only to find the same issue but it's fixed now sucks I wasted my time looking for a solution all this time since November
Click to expand...
Click to collapse
What did you do exactly?
bbot3k said:
What did you do exactly?
Click to expand...
Click to collapse
I plugged my phone into my laptop and it installed the xperia companion and I picked software repair which I thought wasn't gonna erase my data but it turned out it's basically like factory reset and then I just reinstalled everything . I then updated my apn settings manually from the TMobile apn settings and it was working like it was before the dumb update but sadly wasted reinstalling but I guess I should've just done this from the beginning instead of wasting all my time fiddling with secret menus, customer service and crap so if you want it fixed definitely give it a try if not hopefully the next update fixes, I'm hoping it doesn't happen again, major time wasted searching the internet for a solution
charlie313 said:
I plugged my phone into my laptop and it installed the xperia companion and I picked software repair which I thought wasn't gonna erase my data but it turned out it's basically like factory reset and then I just reinstalled everything . I then updated my apn settings manually from the TMobile apn settings and it was working like it was before the dumb update but sadly wasted reinstalling but I guess I should've just done this from the beginning instead of wasting all my time fiddling with secret menus, customer service and crap so if you want it fixed definitely give it a try if not hopefully the next update fixes, I'm hoping it doesn't happen again, major time wasted searching the internet for a solution
[/QUOTE
charlie313 said:
I plugged my phone into my laptop and it installed the xperia companion and I picked software repair which I thought wasn't gonna erase my data but it turned out it's basically like factory reset and then I just reinstalled everything . I then updated my apn settings manually from the TMobile apn settings and it was working like it was before the dumb update but sadly wasted reinstalling but I guess I should've just done this from the beginning instead of wasting all my time fiddling with secret menus, customer service and crap so if you want it fixed definitely give it a try if not hopefully the next update fixes, I'm hoping it doesn't happen again, major time wasted searching the internet for a solution
Click to expand...
Click to collapse
But yeah definitely back up to a computer or something and/or Google all your stuff before you decide to software repair. If you don't have one maybe factory reset it because I honestly think they're same thing I could be wrong though but I couldn't find any difference on the internet between the two.
Click to expand...
Click to collapse
I am SO glad I found this thread and it's not just me having this issue.
I originally thought it was Google Voice messing with my phone, since I make calls and texts from Google Voice, and have my incoming TMobile calls and outgoing TMobile calls redirect to be to/from my Google Voice number. But even after removing Google Voice and completely unlinking it from my phone, my phone refuses to do VoLTE calls.
When receiving a call, the phone will drop down to HSPA+ and sometimes, it takes so long for it to do this, my phone only rings once before I just end up getting a missed call notification. Meanwhile, the caller says they were ringing for the full 30 seconds. Similarly when I make a call, the phone drops down to HSPA or even EDGE to make a call. When I hang up, or get off a call, boom, back to LTE or LTE+.
I went to a TMobile store and they gave me a new SIM and fiddled with my APN settings, to no avail. I haven't bothered contacting Sony, since I figure they will just blame TMobile. The only thing I haven't tried is the factory reset, which is something I very much wanted to avoid, but I'll try it with the Xperia Companion software and keep my fingers crossed. I'll update with my results.
In the meantime, I'm attaching some screenshots of my device info showing the VoLTE is indeed enabled, as well as my APN settings. Maybe they'll help someone here. (WiFi calling is apparently not a thing on this phone, which is disappointing, but I also have Google Voice under normal circumstances, so that hasn't been a problem for me).
GrumpyFox said:
I am SO glad I found this thread and it's not just me having this issue.
I originally thought it was Google Voice messing with my phone, since I make calls and texts from Google Voice, and have my incoming TMobile calls and outgoing TMobile calls redirect to be to/from my Google Voice number. But even after removing Google Voice and completely unlinking it from my phone, my phone refuses to do VoLTE calls.
When receiving a call, the phone will drop down to HSPA+ and sometimes, it takes so long for it to do this, my phone only rings once before I just end up getting a missed call notification. Meanwhile, the caller says they were ringing for the full 30 seconds. Similarly when I make a call, the phone drops down to HSPA or even EDGE to make a call. When I hang up, or get off a call, boom, back to LTE or LTE+.
I went to a TMobile store and they gave me a new SIM and fiddled with my APN settings, to no avail. I haven't bothered contacting Sony, since I figure they will just blame TMobile. The only thing I haven't tried is the factory reset, which is something I very much wanted to avoid, but I'll try it with the Xperia Companion software and keep my fingers crossed. I'll update with my results.
In the meantime, I'm attaching some screenshots of my device info showing the VoLTE is indeed enabled, as well as my APN settings. Maybe they'll help someone here. (WiFi calling is apparently not a thing on this phone, which is disappointing, but I also have Google Voice under normal circumstances, so that hasn't been a problem for me).
Click to expand...
Click to collapse
Yeah someone explained to me that Software Repair is different from Software Reset . It's what i did to fix this issue i hope it fixes it for you as well. I know how much of a hassle and time wasted on this is
charlie313 said:
Yeah someone explained to me that Software Repair is different from Software Reset . It's what i did to fix this issue i hope it fixes it for you as well. I know how much of a hassle and time wasted on this is
Click to expand...
Click to collapse
I also couldn't find anything to help me and as soon as i posted on here and reddit out came people like you with the same issue. Glad i posted and hope everyone who's done a software repair has fixed the issue. Happy Holidays
charlie313 said:
I also couldn't find anything to help me and as soon as i posted on here and reddit out came people like you with the same issue. Glad i posted and hope everyone who's done a software repair has fixed the issue. Happy Holidays
Click to expand...
Click to collapse
I'm in the process of doing the "Repair" now. Hopefully this fixes it. If it does, 1- Awesome! 2- Hopefully it doesn't get borked again when Android 11 rolls around. It's supposedly making its way to the 1ii, but I personally haven't gotten it yet.
GrumpyFox said:
I'm in the process of doing the "Repair" now. Hopefully this fixes it. If it does, 1- Awesome! 2- Hopefully it doesn't get borked again when Android 11 rolls around. It's supposedly making its way to the 1ii, but I personally haven't gotten it yet.
Click to expand...
Click to collapse
Yeah that's what I'm afraid of too i don't want to be reinstalling all my stuff again. If it happens to get stuck on you while you're doing the process just try again. Mine froze during the restarting part of the repair i just held the volume and power button at same time to hard reset it
charlie313 said:
Yeah that's what I'm afraid of too i don't want to be reinstalling all my stuff again. If it happens to get stuck on you while you're doing the process just try again. Mine froze during the restarting part of the repair i just held the volume and power button at same time to hard reset it
Click to expand...
Click to collapse
Yup. My device appears to be bricked. The repair failed on my PC and now when attempting to turn the phone on, I'm met with "Your device is corrupt. It can't be trusted and may not work properly. It will shut down in 5 seconds."
I'm attempting to get it to boot into recovery.
I never imagined my first experience with a Sony phone would be so bad.
GrumpyFox said:
Yup. My device appears to be bricked. The repair failed on my PC and now when attempting to turn the phone on, I'm met with "Your device is corrupt. It can't be trusted and may not work properly. It will shut down in 5 seconds."
I'm attempting to get it to boot into recovery.
I never imagined my first experience with a Sony phone would be so bad.
Click to expand...
Click to collapse
Yeah just horrible luck. Still prefer a software problem over a house fire like that samsung fiasco but still . Yeah just keep trying I'm sure there are ways to factory reset it and then software repair it.
R
....and Never forget its
"Enable VoLTE when available"
There might be the network issue too.
I'm in Nepal and the carrier has started VoLTE few days ago but they haven't listed my phone for VoLTE supporting device . They just have iPhone, Samsungs, Xiaomi etc and not SONY but you know what... Its working for me.
HD voice and LTE while in a call too.
Glad I found this thread. I've got an Xperia 10+ doing the same thing under Lineage 18.1 (Mermaid). Will give this a shot and see what happens. Hopefully I don't brick it.

Call dropping after 58.1.A.5.159 update

Hi folks,
after the last update I have a big problem: when I start a call suddently the signal goes 0 (on both SIMs) and I receive a "no network" error. After a few seconds the signals go back but sometimes I have to wait for 15 or 20 minutes to call otherwise the call drops again.
It happens even when receiving calls.
I have this problem at around 30/40% of calls I try to make and this is very disappointing because I use the phone for work and I do many calls everyday.
A user on an Italian forum had the same problem two updates ago, he told me that he solved after a reset of the phone. I'm desperate now, tomorrow it's holiday in Switzerland so I think I will do it.
NOTE: It's strange nobody on internet is talking about this problem... It's only me?
Having the same issues with this build.
I have the HK dual sim, which I flashed the SEA firmware onto last year.
I'm having to go back to my old phone until this is resolved, I have missed several calls because of it. I tried a factory reset, which seemed to clear it up for a short while, but the problem came back.
Same problem here. After the update of
51.1.A.5.159​I cannot receive or place calls
I cannot receive or send messages
IF I am inside a building. The network goes from 2 bars to 0 when I try to call. If i go outside of the building the cellular network is stronger (full) and calls are going through. I suspect there's something wrong with the baseband maybe? Which is what I was trying to search for yesterday. Was wondering if the current baseband for Android 11 is new or maybe it is the old one from Android 10?
Regardless, I can wholeheartedly say that Android 11 has basically shattered the signal strenght on this device to the point of making it useless. Now I can use it as a multimedia device... weeeheeeee.... Buy a premium device they say, it will be worth it, they say. Never had this issue on any of my Oneplus devices. Shame on Sony!
(btw my phone has the international software, not the HK one. using it on one single sim- XQ-AT-51).
The italian user told me now he's fine, the problem didn't came back.
Tomorrow I have a Switzerland holiday, I'm going to reset the phone to try to fix the problem.
Thanks for answering my question, it seems I'm not the only one with this problem. It's a pity there's no more official Sony forum to discuss these issues.
theskig said:
The italian user told me now he's fine, the problem didn't came back.
Tomorrow I have a Switzerland holiday, I'm going to reset the phone to try to fix the problem.
Thanks for answering my question, it seems I'm not the only one with this problem. It's a pity there's no more official Sony forum to discuss these issues.
Click to expand...
Click to collapse
Please do let us know how you get going. I too wanted to perform a factory reset but I've postponed it in case I could find some answers on the internet.
1ceb0x said:
Please do let us know how you get going. I too wanted to perform a factory reset but I've postponed it in case I could find some answers on the internet.
Click to expand...
Click to collapse
The phone is now restoring the backup from Google but this evening I don't think I will make a single call.
Tomorrow at work I will stress it (usually I make 1h of calls everyday, using both SIMs), and give you the results. Cheers!
The situation is maybe worse than before.
I don't remember if is it possible to downgrade. Xperifirm? Still works with new phones?
Otherwise I have to use my old XZ Premium because I have so many issues at work.
1ceb0x said:
Same problem here. After the update of
51.1.A.5.159​I cannot receive or place calls
I cannot receive or send messages
IF I am inside a building. The network goes from 2 bars to 0 when I try to call. If i go outside of the building the cellular network is stronger (full) and calls are going through. I suspect there's something wrong with the baseband maybe? Which is what I was trying to search for yesterday. Was wondering if the current baseband for Android 11 is new or maybe it is the old one from Android 10?
Regardless, I can wholeheartedly say that Android 11 has basically shattered the signal strenght on this device to the point of making it useless. Now I can use it as a multimedia device... weeeheeeee.... Buy a premium device they say, it will be worth it, they say. Never had this issue on any of my Oneplus devices. Shame on Sony!
(btw my phone has the international software, not the HK one. using it on one single sim- XQ-AT-51).
Click to expand...
Click to collapse
The thing I noticed is that the call drops when switching network from 4G to 2G. Expecially on my Italian SIM, i have a weak 4G signal in my office (1-0 bars) but I have a full 4 bars 2G signal. Before this update when I start a call you can clearly see the signal bar going from 0-1 to full 4 meaning the phone switched to 2G. After this update it was impossible to place a call from my office on my italian SIM because it fails in that 4G/2G switch.
I put that SIM in "GSM only" and I had no issues in managing calls. It's unpractical but works.
The problem is worse on my Swiss SIM (the one I use for work) that has no 2G coverage, so I leave it in 5G/LTE/WCDMA/ecc ecc and hope the best. But I see some switch happens even there ranging from 0-1 to 3 bars (I think is 4G/3G switch. I don't have 5G or 2G coverage in my office). So I can't do anything to avoid the issue, that happens randomly but it's quite frustrating
(...)Same problem on HK. Does anyone think that the problem will be solved with an update? Sony flagship haha. The gsm signal was much weaker than the former P20pro before .... 178. Now ..... disaster. I think the only asset Remaining that you can read "network unavailable" on a 4K screen
So far mine seems much better after the latest update 58.1.A.5.222.
Here's hoping it was a temporary glitch.
Please try to use only one SIM until new updates.
I have the same issues but with only one it works fine.
Do we have any news about a new update so far ?
Have a good day!
Today the 58.1.A.5.222A update arrived, I tested the phone and seems to be OK, tomorrow I will test it harder during the workday.
PS: since two weeks I was using my old XZ Premium and the 1 II was resting in the drawer. So sad. I tried to flash another firmware but I had errors on Flashtool and newflasher. Nothing worked wtf.
After a working day in my office with many calls on both SIMs (a place where the problem was at its best as wrote before) I can confirm you the update completely solved the problem.
So thanks to everybody for the support, I hope you'll also be able to fix it with this update.
beachbloke said:
So far mine seems much better after the latest update 58.1.A.5.222.
Here's hoping it was a temporary glitch.
Click to expand...
Click to collapse
"Temporary glitch" un par di balle*: 3 weeks with my old XZ Premium, and the actual flagship "Xperia 1 II" in the drawer! And resets, backups, restores, tests, copying gigabytes of data from and to the phone, hours of trying to flash other firmwares and receiving only errors...
* https://forum.wordreference.com/threads/par-di-balle.1875980/
theskig said:
Today the 58.1.A.5.222A update arrived, I tested the phone and seems to be OK, tomorrow I will test it harder during the workday.
PS: since two weeks I was using my old XZ Premium and the 1 II was resting in the drawer. So sad. I tried to flash another firmware but I had errors on Flashtool and newflasher. Nothing worked wtf.
Click to expand...
Click to collapse
I got the same software number and my problem still persists. Thank you for updating the thread with your findings. Glad to hear yours is working now.
Hello everyone, I faced the same issue on my device after updating to the software version mentioned by author, I've fixed the issue by flashing .280 software for SEA customisation. Original one was HK. So, now I'm able to use my phone as usual. Hope this tip will help somewho. Good luck with your devices.

Categories

Resources