Question Big issue, No Data during a call. - Xiaomi 11T Pro

So One thing I discovered on this new phone of mine is that although working perfectly there is a major flaw in the way Internet data works during a phone call.
Any time you make a call, the phone downgrades the active signal from 5G/4G to H or E ( GSM).
Which in turns cuts off the data.
If I force 5G or 4G, then the phone call cannot be made. It just disconnects.
I have tried all settings, Volte enable/disable with no joy.
Some have said it's a carrier limitation, but it's not, cause in my iPhone, the very same simcard works just fine and the Internet is usable during a call.
Also tried with dual Simcard setup. As in the settings, the phone allows to use one simcard for data and one for call. Still not working.
Can someone please tell me if there is a solution please, or can you try your phone while on the call to see if Internet works as this feature is detrimental to me keeping the phone. If this doesn't work I will be selling the phone and getting a realme replacement.. Xiaomis sometimes suck with their non existent support.
Thanks

Evo400 said:
So One thing I discovered on this new phone of mine is that although working perfectly there is a major flaw in the way Internet data works during a phone call.
Any time you make a call, the phone downgrades the active signal from 5G/4G to H or E ( GSM).
Which in turns cuts off the data.
If I force 5G or 4G, then the phone call cannot be made. It just disconnects.
I have tried all settings, Volte enable/disable with no joy.
Some have said it's a carrier limitation, but it's not, cause in my iPhone, the very same simcard works just fine and the Internet is usable during a call.
Also tried with dual Simcard setup. As in the settings, the phone allows to use one simcard for data and one for call. Still not working.
Can someone please tell me if there is a solution please, or can you try your phone while on the call to see if Internet works as this feature is detrimental to me keeping the phone. If this doesn't work I will be selling the phone and getting a realme replacement.. Xiaomis sometimes suck with their non existent support.
Thanks
Click to expand...
Click to collapse
This comes from the operator who has not yet communicated with Xiaomi.
Same case with 2 operators on the same phone.
What version of rom?

NOSS8 said:
This comes from the operator who has not yet communicated with Xiaomi.
Same case with 2 operators on the same phone.
What version of rom?
Click to expand...
Click to collapse
Global ROM 13.0.4
I can't see an operator fault if they have Volte services enabled and this simcard works flawlessly on other android systems.
As a matter of fact, any SimCard i have tried, so far 3 providers and the phone does the same thing. As soonest the call is made it downgrades the signal to H while full 5G or 4G is available??

Evo400 said:
Global ROM 13.0.4
I can't see an operator fault if they have Volte services enabled and this simcard works flawlessly on other android systems.
As a matter of fact, any SimCard i have tried, so far 3 providers and the phone does the same thing. As soonest the call is made it downgrades the signal to H while full 5G or 4G is available??
Click to expand...
Click to collapse
the operator must provide the necessary information for each brand and phone to activate Volte and Wowifi.
On my 11t pro everything works with SFR and nothing with FREE because Free has not yet transmitted the information necessary to activate the services.

So went to see the operator. They sell Xiaomi phones. 3 network ( Three EU)
The phones in the stores are working just fine, no issues at all. And my phone simply just isnt.I have tried every possible setting and still not working.
See the screenshot below. As I'm typing this I'm on a super fast full signal 5G connection. As soon as I make a phone call, the phone will downgrade to E or H+ which is horrible. This network signal switching is also laggy, and If 2g signal is poor I cannot even make a call.

Evo400 said:
So went to see the operator. They sell Xiaomi phones. 3 network ( Three EU)
The phones in the stores are working just fine, no issues at all. And my phone simply just isnt.I have tried every possible setting and still not working.
See the screenshot below. As I'm typing this I'm on a super fast full signal 5G connection. As soon as I make a phone call, the phone will downgrade to E or H+ which is horrible. This network signal switching is also laggy, and If 2g signal is poor I cannot even make a call.
Click to expand...
Click to collapse
Does the "Use VoLTE" switch appear in the SIM card settings?
If not you can try the Dialer Code *#*#869434#*#*. That only will make this switch appear, but sometimes this is enough. It should also show the little VoLTE-Badge next to the signal strength (see screenshot).

Deleted

I just had another look and on your 1st post it says the SIM is named "3 IRL", as far as I know Three Ireland does not offer VoLTE at all.
So it will always drop to 3G/H+ or 2G/E ... on every phone.

mici01 said:
I just had another look and on your 1st post it says the SIM is named "3 IRL", as far as I know Three Ireland does not offer VoLTE at all.
So it will always drop to 3G/H+ or 2G/E ... on every phone.
Click to expand...
Click to collapse
5G connection should support this naturally. If I put this simcard Into an iPhone or Galaxy the 5G connection stays on regardless.
Anyway even with Vodafone this doesn't work,so I'm thinking it either a phone limitation or a phone is fooked

Evo400 said:
5G connection should support this naturally. If I put this simcard Into an iPhone or Galaxy the 5G connection stays on regardless.
Anyway even with Vodafone this doesn't work,so I'm thinking it either a phone limitation or a phone is fooked
Click to expand...
Click to collapse
No, for VoNR your phone still needs the same configs as with VoLTE. Though only a few operators support VoNR as of now.

Related

EE UK Wifi Calling

Hi folks, I'm having a bit of difficulty or confusion with wifi calling. I'm on EE but my phone is an XEU. There was a wifi calling option that didn't seem to do anything; no icon when enabled and no obvious network connection.
So I switched to the EVR firmware, wiped the phone and set up from scratch. Still got the same wifi calling option, still no icon or network activity with it enabled.
I don't seem to have VoLTE either, I would have thought the EVR CSC would enable that too?
Does anyone have any insight on this?
Thanks.
I have been having weird issues too with a dual SIM version and EE Wi-Fi calling. Inserting a microSD card in second slot can sometimes disable Wi-Fi calling in that I don't even see the option for switching on.
Hopefully future firmware fixes these glitches as I'm really loving this phone after using iPhones for a few years .
Jake
Wifi calling and VoLTE enabled itself after a serendipitous restart today.
Did your wifi calling ever actually work without an EVR CSC or firmware @ajdjackson ?
Edit: Looks like EE had some stuff to set up on my account, problem was at their end. My account says they're setting up roaming and could take up to 24hrs so something has happened to instigate these changes.
Anyway, now I'm really wondering if I need to EVR firmware at all. Samsung's multi CSC system should allow EE's wifi calling but EE would insist that it doesn't. Can anyone chime in?
Yes - strangely mine seems to working OK now even with the sd card in second sim slot. I haven't flashed any firmware at all.
Jake
Right, after a switch back to XEU I can confirm that EE Wifi Calling does work on a non EE phone but VoLTE does not!
So I switched back to EVR and everything's working fine again.
Quite surprising since EE have always insisted that Wifi Calling is exclusive to phones supplied by them, yet I've never read the same about VoLTE.
Hiya,
Just thought I'd share my experiences...
Like you, I'm also on EE and again like you my NOTE 8 is an XEU SIM free model, in my case from CPW. I found the same issue in that the wifi calling option could toggle on and off but the setting didn't seem to do anything; no icon when enabled and no obvious network connection.
I phoned EE on 150 for support but all they could suggest was to reboot my router at home even though I told them I also have a "work's" mobile phone (iPhone 5c) also on EE and that combination does have working wifi calling.
I decided to try a test to determine if the issue was with my Note 8 handset or with my new EE 4G SIM by swapping SIM's between the two phones. The work SIM worked immediately by activating wifi calling in my Note 8. My personal SIM was active in my works iPhone for approx. 2-3 minutes with no signal before a pop-up message appeared asking if I wanted to activate wifi calling. I obviously selected 'Yes' and when I swapped the SIM's back to their original handsets my Note 8 now magically works with wifi calling with the original SIM.
It's almost as if the menu item in the Note 8 for toggling wifi calling on and off doesn't activate the sim card even though the graphic animates to show the function activated.
Anyways, I now have a Note 8 with working wifi calling.
Hope that helps anyone else with similar issues involving EE wifi calling.
*EDIT* Hehe looks like my signature is a little out of date.
S.
Thanks Steve. Do you have VoLTE? I can't get that working without swapping the firmware for the EVR specific one.
UberPishy said:
Thanks Steve. Do you have VoLTE? I can't get that working without swapping the firmware for the EVR specific one.
Click to expand...
Click to collapse
Hmm I don't know. I know that I have 'Mobile Networks' setting 'Network mode' set to 'LTE/3G/2G (auto connect)' as opposed to the other settings of '3G/2G (auto connect)', '3G only' or '2G only' but how can you tell if a voice call is routed over 4G? Does a special icon appear as in the case of wifi calling? Hard for me to say as I have zero signal at home and very poor signal at work so in both cases my Note 8 defaults to wifi calling.
Have you tried calling EE to check if VoLTE is only supported on branded firmware as opposed to generic XEU? I know that in the case of wifi calling their website is very explicit in stating that wifi calling is not only supported on EE branded/sourced handsets but also works on certain generic handsets such as S8 / S8+ & Note 8. Their website on VoLTE or as EE term the service '4G calling' is not so clear...
http://newsroom.ee.co.uk/samsung-ga...d-wifi-calling--available-to-pre-order-on-ee/
http://ee.co.uk/help/phones-and-device/wifi-calling
http://ee.co.uk/help/phones-and-device/4g-calling
This EE Community Forum post seems to lay the blame at Samsung's door as opposed to EE's...
https://community.ee.co.uk/t5/4G-and-mobile-data/VoLTE-on-Samsung-Galaxy-S8/td-p/559521
Reading the thread fully, it seems VoLTE is only available on EVR and not XEU.
S.
Steve.P said:
how can you tell if a voice call is routed over 4G? Does a special icon appear as in the case of wifi calling?
Click to expand...
Click to collapse
Yes, this shows the VoLTE icon which appears whenever I have no wifi or I disable wifi calling.
https://i.imgur.com/cUhNswN.jpg
The discussion on EE you linked is interesting, so they do limit VoLTE to their own supplied phones. I'd recommend switching to an EVR firmware, despite the guy who says there's no advantage for the user, I've found VoLTE very useful, especially in conjunction with Wifi calling. VoLTE/Wifi calls are so much clearer, they can seamlessly switch if you lose the wifi signal and they seem to connect a bit quicker too.
UberPishy said:
Yes, this shows the VoLTE icon which appears whenever I have no wifi or I disable wifi calling.
https://i.imgur.com/cUhNswN.jpg
The discussion on EE you linked is interesting, so they do limit VoLTE to their own supplied phones. I'd recommend switching to an EVR firmware, despite the guy who says there's no advantage for the user, I've found VoLTE very useful, especially in conjunction with Wifi calling. VoLTE/Wifi calls are so much clearer, they can seamlessly switch if you lose the wifi signal and they seem to connect a bit quicker too.
Click to expand...
Click to collapse
Ahh there is a symbol, thanks for sharing the picture. I can confirm that do not get VoLTE and whilst it would be good to have every function that I pay for working the fact that I get zero 4G signal at home and at work where I spend 90% of my time means I'm not realistically going to miss VoLTE as my phone now has a working 'wifi calling' service. I suppose that if EE ever get round to providing coverage in the blackspot that surrounds my home location then I might consider swapping to EVR firmware. I won't hold my breath though because in the 20 years that I have lived at my current address, EE and Orange before them haven't bothered with trying to provide adequate cellular coverage.
I remember going through exactly the same crap with my Samsung Galaxy S2, Orange firmware got an app called signal boost and the vanilla xeu firmware didn't and we had to do a number of things to get the app ported over to XEU. Seems like no matter how much technology advances over the years some issues never change.:silly:
S.

Cellular strength and throughput

We know how much you like to stream, ahem, "videos", and so cellular data is mega-important. Rate this thread to express how you think the Xiaomi Mi Max 3's LTE performs. A higher rating indicates that it's fantastic: throughput is excellent and signal strength is top-notch.
Then, drop a comment if you have anything to add.
Not so good, my first day out of the house with the phone and it dropped T-Mobile service twice while I was on a call.
ice0901 said:
Not so good, my first day out of the house with the phone and it dropped T-Mobile service twice while I was on a call.
Click to expand...
Click to collapse
If you like you can use Network Signal Guru and measure and take screenshots and post here to give some actual data if its good or bad.
Which bands are used when and how long and when a call cuts out.
And when its very good to give a comparison when the phone performs very well and when not so good.
However Network Signal Guru requires root permissions
https://play.google.com/store/apps/details?id=com.qtrun.QuickTest
Some alternative apps are
CellMapper
https://play.google.com/store/apps/details?id=cellmapper.net.cellmapper
Network Cell Info Lite
https://play.google.com/store/apps/details?id=com.wilysis.cellinfolite
SignalCheck Pro
https://play.google.com/store/apps/details?id=com.blueline.signalcheck
I don't have root yet however I do have the so called global firmware. Maybe that's the source if it is indeed a fake ROM.
So I just noticed something. When I make/receive a call I immediately drop LTE. Once the call ends it's restored. I have to assume the phone is not capable of voice over LTE or I need to find a toggle.
ice0901 said:
So I just noticed something. When I make/receive a call I immediately drop LTE. Once the call ends it's restored. I have to assume the phone is not capable of voice over LTE or I need to find a toggle.
Click to expand...
Click to collapse
that is normal....all phones switch to 3g when on call (even U.S carrier phones)...unless doing VOLTE...then mobile data unvailable during call ...Samsung S8 does it on Verizon (so does Iphone 7)
mac231us said:
that is normal....all phones switch to 3g when on call (even U.S carrier phones)...unless doing VOLTE...then mobile data unvailable during call ...Samsung S8 does it on Verizon (so does Iphone 7)
Click to expand...
Click to collapse
I know as I stated in the original post the phone must not be compatible with Volte as there is no toggle. Additionally it's dropping to edge instead of 3G whenever I receive a call
---sorry wrong info-not verified
I am on AT&T and have been hoping you posted an update to your initial findings.
So text,calls are working as intended now ?
Appreciate the info so far.
mac231us said:
anyone having issues with simply making calls, sending sms and accessing the internet? anything in the *#*#64663*#* phone service mode - phone seems to want to always sit in TD-SCDMA/LTE mode instead of LTE/UMTS mode. Always reverts to it. Not sure if that is the issue. HORRIBLE experience with this device so far. Right off the bat when I got it, it was doing sms sending (forever in sending mode until failed or sms would come in after like 15-20 mins and only after a reboot) Incoming sms no issues. Message center is ok. Then data was an issue. Switching SIM seemed to fix one first call then the 2nd call would just sit in dialing mode forever and ultimately hang up. Garbage device (so far) unless it is some simple fix. This is on ATT.
EDIT finally managed to fix the issues
fastboot mode
erase cacne this went through
erase data did not work
then did factory reset through the recovery mode
booted it up
inserted sim...everything works now (for the first time)
bootloader was unlocked by the vendor/someone upstream prior to shipping
very fast...even on 4g
lte comes on selectively so far only seen band 5 (no band 4)
EDIT2
So while mui is pretty slick and the phone is easy to use, fast, great on battery it still suffers from a Xiaomi-related bug (will call it that) in call-forwarding. You cannot set call forwarding (of if previously set - when the sim is in another device, of course), the call forwarding cannot be disabled (SIM error) This has been an issue for years - yes like since 2014-15...since the user base is mostly overseas, you can see complaints but no real resolution (useless feedback from thread owners etc who talk about contacting the operator, removing sim card etc) This does not exist on Huawei, Oppo etc phones (having used them) Even some miui ports suffer from this on other devices (so it seems very likely an MIUI issue) I have an old Samsung Mega that has the same issue on a ported MIUI for it. The Mi Mix I had a few months back had the same issue. No one ever fixes this.
Click to expand...
Click to collapse
I dont understand the steps that you did to fix the problems.
Could you please make it more clear and tell us exactly the commands you did in fastboot mode / not in fastboot mode and give us clear instructions? like I dont understand "erase cacne this went through
erase data did not work"
Thanks bro and Im happy that the problem is solved for you.
omer919 said:
I dont understand the steps that you did to fix the problems.
Could you please make it more clear and tell us exactly the commands you did in fastboot mode / not in fastboot mode and give us clear instructions? like I dont understand "erase cacne this went through
erase data did not work"
Thanks bro and Im happy that the problem is solved for you.
Click to expand...
Click to collapse
not verified info deleted my post (need to check)
mac231us said:
not verified info deleted my post (need to check)
Click to expand...
Click to collapse
got any issues with the phone ?
omer919 said:
got any issues with the phone ?
Click to expand...
Click to collapse
No...I think there was no issue. I was doing something wrong in selecting bands that don't exist here through the service menu-so am all confused apologize for posting off and on and then posting a 'solution' for something that probably never existed. I see my post was quoted-hopefully it does not mislead and start a plethora of unnecessary questions-you may want to edit what you quoted from my initial post-just a suggestion thanks
quazimojo said:
I am on AT&T and have been hoping you posted an update to your initial findings.
So text,calls are working as intended now ?
Appreciate the info so far.
Click to expand...
Click to collapse
Everything is fine except Calls. I've been told my phone rings once then goes to voicemail and occasionally I will connect to another party but we can't hear each other. Phone calls work less than 2 out of 5 times. Text is flawless, data works great with the exception of slow handover when switching from wifi to LTE.
ice0901 said:
Everything is fine except Calls. I've been told my phone rings once then goes to voicemail and occasionally I will connect to another party but we can't hear each other. Phone calls work less than 2 out of 5 times. Text is flawless, data works great with the exception of slow handover when switching from wifi to LTE.
Click to expand...
Click to collapse
And you are on T-mobile ? My friend ordered one and he's on the same service as you so I can tell him what he might expect. I don't know if Mac321 is having the same experience or not on ATT.
I want to buy the phone but I'm trying to gather as much info as I can before hand so I don't have to return/sell the phone.
Thanks for the reply
Yeah if it's not fixed I'll have have my calls forwarded to Google voice number and do VoIP calls.
ice0901 said:
Yeah if it's not fixed I'll have have my calls forwarded to Google voice number and do VoIP calls.
Click to expand...
Click to collapse
Hey man, in what state are you located?
Sent from my MHA-L29 using Tapatalk
DKM119 said:
Hey man, in what state are you located?
Sent from my MHA-L29 using Tapatalk
Click to expand...
Click to collapse
Hey I fixed it. Found a post on a thread that will enable VoLTE on Xiaomi Phones. Apparently they disabled VoLTE starting with MiUi 9 due to lack of certifications in certain countries, the US being one of them. To activate it dial *#*#86583#*#*
Band 4?
ice0901 said:
Hey I fixed it. Found a post on a thread that will enable VoLTE on Xiaomi Phones. Apparently they disabled VoLTE starting with MiUi 9 due to lack of certifications in certain countries, the US being one of them. To activate it dial *#*#86583#*#*
Click to expand...
Click to collapse
Are you getting Band 4 LTE on Tmobile? Also, how about 3G/HSPA? I believe it supports Band 2 for those, right?
Band 4 LTE is rock solid everywhere however I cannot connect to 3G anywhere. That's why I had issues with calls before I activated VoLTE. I'm not sure if it's the phones band capability or something else but even forcing 3G nets me 2G edge. Thankfully I don't need it.

VOLTE T-Mobile, not working (WORKING as of last update)

I'm experiencing issues with VOLTE on T-Mobile. My phone switches immediately from an LTE+ DATA connection to HSPA the moment a call is placed. Of course, VOLTE is enabled on the settings side. I'm running an unmodified system, upgraded to PIE.
I've been on the phone with T-Mo to make sure the APN is correct (nothing special to mention here). I've also tried different connection combinations using the *#*#4636#*#* with different results but, even though the phone connects really fast to DATA (LTE+), I cannot get VOLTE to function in any case. On the other hand, WiFi calling works just fine.
On a chat with Razer, they just told me that VOLTE is unstable with T-Mobile and, to disable the function altogether from settings.
Before I give up, I'm asking the geniuses here for ideas or experiences? Any ideas anyone?
cabegol said:
I'm experiencing issues with VOLTE on T-Mobile. My phone switches immediately from an LTE+ DATA connection to HSPA the moment a call is placed. Of course, VOLTE is enabled on the settings side. I'm running an unmodified system, upgraded to PIE.
I've been on the phone with T-Mo to make sure the APN is correct (nothing special to mention here). I've also tried different connection combinations using the *#*#4636#*#* with different results but, even though the phone connects really fast to DATA (LTE+), I cannot get VOLTE to function in any case. On the other hand, WiFi calling works just fine.
On a chat with Razer, they just told me that VOLTE is unstable with T-Mobile and, to disable the function altogether from settings.
Before I give up, I'm asking the geniuses here for ideas or experiences? Any ideas anyone?
Click to expand...
Click to collapse
I hope this can be figured out. Im waiting for my Razer 2 phone delivery and also on T-Mobile. What OS are you running? Android Pie?
Yes, I'm on Pie.
Good news! with today's update (3-20-2019), my phone is using VOLTE technologies to connect audio calls. Phone calls sound immensely better now (the "HD" icon shows up during the call and the "LTE+" connection indicator in the status bar remains through the call).

Xiaomi mi 9T Pro - Problems receiving calls while on 4G

Hello!
I hope someone can help me with this "little" problem that I'm experimenting with my Xiaomi mi 9T Pro running MIUI Global 10.3.3.0 (Stock) I checked everything before buying and the phone is fully compatible with my carrier (I'm from Venezuela), however, I noticed that when the phone is on 4G it switches to 3G/H/H+ in order to make/receive calls (which is pretty normal since my carrier does not support VoLTE). The problem comes when there is an incoming call, it should switch automatically to 3G/H/H+ BUT it does not happen all the time, in fact, I can say that it only happens 25% of the time when I was testing, of course, when it does not happen there is no way to receive the incoming call.
So far I tried:
- Forcing the phone to stay on 3G (everything works great)
- Testing the different network options (it switches from 4G to 3G but not always as it should)
- Switching from SIM slot 1 to slot 2
- At the moment the preferred network type is LTE/TD-SCDMA/UMTS (default)
Could it be a software issue? or could it be related to my carrier? I haven't tried using a SIM card from another carrier.
After all, I bought a PHONE that does not behave like an actual phone all the time, so, I hope someone can help me with this.
Thanks in advance.
Thank you, I almost thought I was the only one.
I bought my Xiaomi mi 9T Pro running MIUI Global 10.3.3.0 (Stock) a week ago and I have the same symptoms like you.
Im on A1 Network in Austria running default network settings and I realized after hours I couldn't make calls (and obviously did't receive any).
This is the first phone I had this network problems, and I am on A1 network for 20 years with different phones....
I hope someone can share some light why this happens and what are the best settings for European (Austrian) A1 network.
Trying to switch to LTE/UMTS, but that setting is always reset to the default above after reboot.
As its also my work phone it would be very bad not recognizing for hours that I'm not reachable...
Thank you !
A1 supports VoLTE, try to enable it on your phone, I have no issues running a dual SIM config with A1 and 3 .....
pietropizzi said:
Thank you, I almost thought I was the only one.
I bought my Xiaomi mi 9T Pro running MIUI Global 10.3.3.0 (Stock) a week ago and I have the same symptoms like you.
Im on A1 Network in Austria running default network settings and I realized after hours I couldn't make calls (and obviously did't receive any).
This is the first phone I had this network problems, and I am on A1 network for 20 years with different phones....
I hope someone can share some light why this happens and what are the best settings for European (Austrian) A1 network.
Trying to switch to LTE/UMTS, but that setting is always reset to the default above after reboot.
As its also my work phone it would be very bad not recognizing for hours that I'm not reachable...
Thank you !
Click to expand...
Click to collapse
Hi! It feels better knowing that I'm not alone.
The fact is that I can actually make calls (it take from 3 to 5 seconds switching from 4G to 3G/H), the problem comes when there is an incoming call, sometimes it works (it switches to 3G/H and when the call is ended, it switches back to 4G) but most it does not. I just tried LTE/UMTS and it does work but not for long, I can see that it happens and sometimes it does not. I found a "solution" which involves forcing to 3G/H but it's not the point, there should be a real solution. At this moment, I haven't found a correct network configuration, all the ones that I've tried just have worked for me for some time, and then the problem is back without even rebooting the phone. Could it be caused by a faulty SIM or it's just a network/carrier issue? I don't want to think that it's a hardware issue.
error23 said:
A1 supports VoLTE, try to enable it on your phone, I have no issues running a dual SIM config with A1 and 3 .....
Click to expand...
Click to collapse
Whats your ROM Version ?
I alreaddy tried to enable VoLTE, I can switch it on and the VoLTE Symbol appears.
The problem is - I have no caller ID. I don't even see the phone number when someone calls me ("unbekannter Anrufer" - "unknown caller")
That's not conveniant, so as soon as I switched OFF VoLTE caller recognition was enabled again.
Is VoWIFI working at you with A1 ? I can enable it but I don't get the symbot at home in my WIFI network.
So for now I see two options:
- the correct (stable) network configuration for Austria that persist in the phone configuration
- enabling VoLTE but with a solution for a working caller ID
I finally got found the solution
Problem is the notification settings.
This was somehow reset after the update to mui 11.
To fix the issue:
1. Go to settings
2. Click notification
3. Click the notification badges (3rd icon)
4. Find the "phone" icon
5. Enable the show notification
6. Exit to settings and test
Having same problem
Can someone help me I am from Malta and have Xiaomi mi9t pro and from last night stopped receiving calls and incoming . Tried with sim 1 and it worked but it happened again . I tried the notification settings but still the same problem .
I had trouble not receiving calls also...
After looking here, and also on YouTube, I started going through my phone again. I too was not getting my calls a lot, but I have only had my phone maybe 2 weeks, so there's not much on it yet. One thing I am always adding is themes. The theme feature is it's own pre installed app as I'm sure we've all seen. Different one's have been doing/blocking certain features at times on my phone. My husband's calls were being sent to voicemail, and some other important calls. I noticed the other day when I tried a new theme it locked me out of my phone with no preface to get back to the lock screen. I had to take a picture and select send to get back to the lock screen. Remembering this, I decided to go back to the original developer theme for the phone. My phone now rings. Original developer mode also controls the call feature, not just the theme, which I did not know or read until now. Going back to it I believe kind of reset my configuration. I would say give this a try for sure. Hope it helps someone else I love my phone and didn't want to lose it. FYI, I am on TMobile network in the USA.
Hi!
I have a very similar problem on a xiaomi redmi note 8t. I tried various settings, but failed. This is annoying because the phone is relatively new. I think it is a hardware problem.
Saulor said:
Hello!
I hope someone can help me with this "little" problem that I'm experimenting with my Xiaomi mi 9T Pro running MIUI Global 10.3.3.0 (Stock) I checked everything before buying and the phone is fully compatible with my carrier (I'm from Venezuela), however, I noticed that when the phone is on 4G it switches to 3G/H/H+ in order to make/receive calls (which is pretty normal since my carrier does not support VoLTE). The problem comes when there is an incoming call, it should switch automatically to 3G/H/H+ BUT it does not happen all the time, in fact, I can say that it only happens 25% of the time when I was testing, of course, when it does not happen there is no way to receive the incoming call.
So far I tried:
- Forcing the phone to stay on 3G (everything works great)
- Testing the different network options (it switches from 4G to 3G but not always as it should)
- Switching from SIM slot 1 to slot 2
- At the moment the preferred network type is LTE/TD-SCDMA/UMTS (default)
Could it be a software issue? or could it be related to my carrier? I haven't tried using a SIM card from another carrier.
After all, I bought a PHONE that does not behave like an actual phone all the time, so, I hope someone can help me with this.
Thanks in advance.
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I have the same issue here in same phone but on EU MIUI 12.0.3.0 .. with the same symptoms u described .. i suspected in sim card and i replaced it with a new one and the issue still there .. did u find a solution for this issue?
I'm not sure if this is the same issue as what's described by OP, but it's somewhat similar (not receiving calls). Sometimes my colleagues will call me on Whatsapp and state that they're unable to reach me via the cellular network. This is what fixed it for me:
Settings - SIM cards & mobile networks - Select your sim card - turn off 'use volte (use volte to improve the quality of voice calls)'
scarmage said:
I'm not sure if this is the same issue as what's described by OP, but it's somewhat similar (not receiving calls). Sometimes my colleagues will call me on Whatsapp and state that they're unable to reach me via the cellular network. This is what fixed it for me:
Settings - SIM cards & mobile networks - Select your sim card - turn off 'use volte (use volte to improve the quality of voice calls)'
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Click to collapse
I tried this option and also not working the issue still there since 10 daysi also tried
Settings all specs then internal storage then sim 1 then change the setting to gsm only
After that the line working for 10 min and then again i can't receive calls or make ones
I have the same problem i have a redmi note 9 pro, i can't receive calls in 4G, i only can receive calls in Edge someone could resolve this? I tried all of these methods but nothing works

Rog phone 3 mobile network issue

Hey so I've had my Rog phone 3 for over 3 months now, updated to A12. A constant problem has been the mobile network. Works fine for WhatsApp, but for normal browser (different browsers), other apps requiring internet, though the mobile data is on, it acts like it's offline, showing offline. I have to toggle on and off airplane mode for it to eventually work. Then if I turn off mobile data and turn back on, the cycle repeats. Please help
I'm having the same issue here too. The A12 Beta had choppy Network Connectivity that would just crumple my phone and not allow me to use Communications or Data, the random disconnects were absolutely infuriating, and after updating to the stable build, it was just not allowing Mobile Communication at all. (No Incoming or Outgoing calls)
I'm extremely happy about the downgrade FW however to allow me to revert to A11 that at least allows my phone to function as intended, even if I cannot enjoy the update that A12 has to offer.
Downgrading from A12 to A11 is an Upgrade. A12 has little to offer beyond making your OS look like a kindergarten app ...
Upgraded to A12 last night with the OTA. Data is fine but I cannot make calls, network immediately drops. no other issues with the phone though, 4g data works.5g never worked but volte did (At&t network) VoLte doesn't show up and I cannot find a place to enable it however there is a toggle for it in notifications. I spent about 3 hours at AT&T. So. here is info if it helps anyone. They told me that the phone is somehow locked to 3g calling even though the sim card shows LTE voice. After the update only calls dont work. The guy said he helped me before by provisioning an older sim card and using VoLte, however from what i understand The phone Does support more than 3g voice but if someone can correct me that would be cool. Also I found out if I put a sim card from an ATT iPhone it will connect at 5g (20mbps speed tested). I said well if I lose voice and have to figure out a wifi calling plan I would rather do it with 5G, however when they provisioned a 5G sim for me on my account it wont link above 4g+ (1-3mbps) same tower. So im at a loss. I know part of it is the new android 12 update, I know some of it is the stupid account provisioning and i know some is the phone. I DO NOT know what is what so any help would be awesome. If there is some way to add VoLte back to the phone in android 12, flash a new radio or something... but if someone can shed some light onto what is really happening so I know where I can press that would be slick. if the phone does communicate through something other than 3g voice then I can push back on At&t but i have kept this "less" a development platform and more a daily driver. I guess that has to now change LOL!
Andrologic said:
Downgrading from A12 to A11 is an Upgrade. A12 has little to offer beyond making your OS look like a kindergarten app ...
Click to expand...
Click to collapse
How can I downgrade. This new update is killing me
TheMightyElk said:
Upgraded to A12 last night with the OTA. Data is fine but I cannot make calls, network immediately drops. no other issues with the phone though, 4g data works.5g never worked but volte did (At&t network) VoLte doesn't show up and I cannot find a place to enable it however there is a toggle for it in notifications. I spent about 3 hours at AT&T. So. here is info if it helps anyone. They told me that the phone is somehow locked to 3g calling even though the sim card shows LTE voice. After the update only calls dont work. The guy said he helped me before by provisioning an older sim card and using VoLte, however from what i understand The phone Does support more than 3g voice but if someone can correct me that would be cool. Also I found out if I put a sim card from an ATT iPhone it will connect at 5g (20mbps speed tested). I said well if I lose voice and have to figure out a wifi calling plan I would rather do it with 5G, however when they provisioned a 5G sim for me on my account it wont link above 4g+ (1-3mbps) same tower. So im at a loss. I know part of it is the new android 12 update, I know some of it is the stupid account provisioning and i know some is the phone. I DO NOT know what is what so any help would be awesome. If there is some way to add VoLte back to the phone in android 12, flash a new radio or something... but if someone can shed some light onto what is really happening so I know where I can press that would be slick. if the phone does communicate through something other than 3g voice then I can push back on At&t but i have kept this "less" a development platform and more a daily driver. I guess that has to now change LOL!
Click to expand...
Click to collapse
Any developments on this? I am having the same issue.
Mine seems to lose connectivity after returning from do not disturb or when I'm inside with no signal for a while. I have to toggle airplane mode for sec, then I can use the phone. My wife texts me a few times a week, "It's going straight to voicemail again.", then I toggle it and call her. It will work fine for the rest of the day. Doesn't happen every time, though. Bizarre, though most of the time it's in the morning after returning from do not disturb mode. Kind of a hassle, but I'm coping. I'm going to start logging when it happens to see if any settings may be causing this.

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