Volte and hd voice - Xiaomi Mi A1 Questions & Answers

Anyone can help me how to enable on this phone ?

Anyone guys?

If supported by your Network, you can enable it.
Go to mobile network settings and enable "Enhanced 4G LTE services". Below screenshot might help.

sandrocks said:
If supported by your Network, you can enable it.
Go to mobile network settings and enable "Enhanced 4G LTE services". Below screenshot might help.
Click to expand...
Click to collapse
Thank you! I don't see this option in my phone. So that means that my network doesn't support it ?

pardalos said:
Thank you! I don't see this option in my phone. So that means that my network doesn't support it ?
Click to expand...
Click to collapse
Most probably your network does not support VoLTE. I will confirm this once I get non VoLTE network sim.

sandrocks said:
Most probably your network does not support VoLTE. I will confirm this once I get non VoLTE network sim.
Click to expand...
Click to collapse
Thank you, I will ask my carrier Monday morning and I will update the post. In case someone else has the same problem.

Related

Oreo - VoLTE - Enhanced 4G LTE Mode gone

Hi there.
since the officiel oreo update I have no more VoLTE (HD) capabilities and the setting option is gone. The search finds it but when I select "Enhanced 4G LTE Mode" from the search I get to the cellular network settings where I do not see this option. Any Ideas?
Regards
its enabled by default ,i got HD icon on status bar for airtel 4G
Rohit99 said:
its enabled by default ,i got HD icon on status bar for airtel 4G
Click to expand...
Click to collapse
You always have the HD symbol or only when you make a volte call?
saski4711 said:
You always have the HD symbol or only when you make a volte call?
Click to expand...
Click to collapse
Always...
saski4711 said:
Hi there.
since the officiel oreo update I have no more VoLTE (HD) capabilities and the setting option is gone. The search finds it but when I select "Enhanced 4G LTE Mode" from the search I get to the cellular network settings where I do not see this option. Any Ideas?
Regards
Click to expand...
Click to collapse
For me the same. Was and after update to Oreo, gone. Network EE UK. :crying:
Hi i have the same problem and my network support volte. I am on nougat.
Paradox♀ said:
Always...
Click to expand...
Click to collapse
It shall be there only when network supports VoLTE calls.
Barmenchik said:
For me the same. Was and after update to Oreo, gone. Network EE UK. :crying:
Click to expand...
Click to collapse
pardalos said:
Hi i have the same problem and my network support volte. I am on nougat.
Click to expand...
Click to collapse
Maybe be they disabled some of the frequency bands which your network is using.
I also need this Option back, my provider doesn't support SMS on Enhanced 4G LTE Mode. So I have to manually switch back to 3G to receive a planned SMS and then back to 4G... Is there a way to somehow unhide this option, because it looks like it is available in the settings when you search for it, but if you click on it you only end up on the mobile network page.
I have this option.
Apoorv AR said:
I have this option.
Click to expand...
Click to collapse
Don't see this option anymore. Maybe my carrier does no longer support VoLTE on my MIA1 or the oreo update broke the support. Anyone out there in Germany with a VoLTE enabled plan where VoLTE still works on this device?
Apoorv AR said:
I have this option.
Click to expand...
Click to collapse
Me not, and I also don't see any HD Icon on the status bar. Can only say that SMS was working before when I switched off the Enhanced LTE stuff and now it's not working anymore.
sandrocks said:
It shall be there only when network supports VoLTE calls.
Maybe be they disabled some of the frequency bands which your network is using.
Click to expand...
Click to collapse
How can i see which bands is my phone using ?
hi, it happened also in Indonesia, my HD logo dissapear, now I cannot use sms or data call without volte apps.
tried to re-flash 7.8.23 still the same, seems IMS has been blocked.
For me to... In Network setting this option is not on the list. But it shows in searching settings and after I select its not om the list...
I have the same issue on O2 Carrier Germany. SIM card is not provisioned for VoLTE but it works when used on a Galaxy J5 2017
As soon i put it in my Mi A1 upon calling there is a fallback from 4G to 3G
I also have a Vodafone SIM which is provisioned for VoLTE and in this way the option Enhanced LTE appears but has no effect because when performing a call there is again a fallback from 4G to 3G
I have now Oreo + January patch and still it does not work
Also HD voice is not working. When performing a call from my phone no HD is seen on the other endpoint and no notifaction on mine
If i get a HD voice call from another phone connection is established and quality is good but no indication on Mi A1 that it is a HD voice call
Absynth30 said:
I have the same issue on O2 Carrier Germany. SIM card is not provisioned for VoLTE but it works when used on a Galaxy J5 2017
As soon i put it in my Mi A1 upon calling there is a fallback from 4G to 3G
I also have a Vodafone SIM which is provisioned for VoLTE and in this way the option Enhanced LTE appears but has no effect because when performing a call there is again a fallback from 4G to 3G
I have now Oreo + January patch and still it does not work
Also HD voice is not working. When performing a call from my phone no HD is seen on the other endpoint and no notifaction on mine
If i get a HD voice call from another phone connection is established and quality is good but no indication on Mi A1 that it is a HD voice call
Click to expand...
Click to collapse
Same here for Telekom(Germany) with VoLTE enabled SIM. With Android N I got the HD Symbol and VoLTE was working within Telekom calls. With the Oreo Update that feature is gone. Regarding HDVoice (AMS-WBR): That works well for me too but I believe the HD Symbol is only shown if VoLTE is being successfully negociated between the phone and the carrier (?)
from MIUI forum, about ours issue...
At the moment VOLte is disabled in the device, in the future, after correcting more important errors, this function will be turned on at the software level
True or not I don't know..
EE support tell me,they do not support HD Voice and VoLTE on Mi A1 maybe in the near future .. BUT I saw this icon before the update and the choice was in the settings!
OMG. Im flash back clear Android 7.1.2 (7.12.19) and VoLTE ON !!!
so flash back to Android 8, ALL VoLTE settings locked again!! Android 8 issue
Barmenchik said:
OMG. Im flash back clear Android 7.1.2 (7.12.19) and VoLTE ON !!!
so flash back to Android 8, ALL VoLTE settings locked again!! Android 8 issue
Click to expand...
Click to collapse
could you point me to the exact same firmware version you have been using? that was successful?
I read a O2 German user reported VoLTE works on a October 2017 Nougat version but he didn't mention the exact version.
Hey! To get VoLTE again, you have to type *#*#86583#*#* (or *#*#VOLTE#*#*).

No LTE on new Mi A1

Just got a brand new Mi A1 and can only get it to connect to 3G network. I'm in the US on Cricket, but I can't seem to get an LTE connection. My other Nexus 6 is on LTE right next to the A1, but the A1 will only go 3G. Does something need to be enabled on the phone to connect to LTE?
bdbull said:
Just got a brand new Mi A1 and can only get it to connect to 3G network. I'm in the US on Cricket, but I can't seem to get an LTE connection. My other Nexus 6 is on LTE right next to the A1, but the A1 will only go 3G. Does something need to be enabled on the phone to connect to LTE?
Click to expand...
Click to collapse
Are u sure its enabled?
Settings/Network & Internet/Mobile network
Enhanced 4g/LTE Mod
Rajeev said:
Are u sure its enabled?
Settings/Network & Internet/Mobile network
Enhanced 4g/LTE Mod
Click to expand...
Click to collapse
Yep, it's enabled.
bdbull said:
Yep, it's enabled.
Click to expand...
Click to collapse
Dial *#*#4636#*#* in dialer
Go to phone information
Then scroll down to "set preferred network type"
And chose "lte only" from there
Wait for few mins to get signal
If u get signal than cool but if not than switch it back to "lte/wcdam" to keep using 3g
And then probably mi a1 doesn't support lte bands of cricket
Looks like I may be out of luck. I can't post links yet, but if you check frequencycheck.com for Cricket and the Mi A1, looks like I may get 50% of the LTE bands at best. Guess this guy is going up on ebay.
Nickinfinity said:
Dial *#*#4636#*#* in dialer
Go to phone information
Then scroll down to "set preferred network type"
And chose "lte only" from there
Wait for few mins to get signal
If u get signal than cool but if not than switch it back to "lte/wcdam" to keep using 3g
And then probably mi a1 doesn't support lte bands of cricket
Click to expand...
Click to collapse
Did this a little while ago and wasn't able to get anything when LTE only was selected.
Did you try to select LTE network manually?
sandrocks said:
Did you try to select LTE network manually?
Click to expand...
Click to collapse
Yes, any time I restrict the phone to just LTE, it doesn't get any signal.
I had the same issue here in Germany, setup your apn manually and you're good.
coremania said:
I had the same issue here in Germany, setup your apn manually and you're good.
Click to expand...
Click to collapse
APN settings are already exactly what Cricket specifies in their support pages.
I have Cricket in Chicagoland area and get 4G most places.

4G network not available in Switzerland

Hello everyone,
I just bought a mi A1 but unfortunately the 4G network didn't appear in the list of available networks anymore. I checked the settings and 4G is the preferred network type. Also, I have LTE/UMTS (auto) as preferred network type in phone info. I tried several options with no luck.
Any help would be very appreciated, thanks!
Leonardo
milanoleonardo said:
Hello everyone,
I just bought a mi A1 but unfortunately the 4G network didn't appear in the list of available networks anymore. I checked the settings and 4G is the preferred network type. Also, I have LTE/UMTS (auto) as preferred network type in phone info. I tried several options with no luck.
Any help would be very appreciated, thanks!
Leonardo
Click to expand...
Click to collapse
I had the same problem with stock april. I solved going in dialpad to *#*#4636#*#* - information of telephone and there you can change to prefer lte
Ed: Im also from Switzerland
mardrest said:
I had the same problem with stock april. I solved going in dialpad to *#*#4636#*#* - information of telephone and there you can change to prefer lte
Ed: Im also from Switzerland
Click to expand...
Click to collapse
Thanks! I just tried but I get the following error: 'connection problem or invalid MMI code'. My phone is not rooted (not sure it needs to be)
milanoleonardo said:
Thanks! I just tried but I get the following error: 'connection problem or invalid MMI code'. My phone is not rooted (not sure it needs to be)
Click to expand...
Click to collapse
Did you put the code on the telephone dialer? If so,
try one of the solutions on this page: https://www.google.com/amp/s/www.technobezz.com/fix-connection-problem-invalid-mmi-code/amp/
Ed: You don't have to be rooted
mardrest said:
Did you put the code on the telephone dialer? If so,
try one of the solutions on this page:
Ed: You don't have to be rooted
Click to expand...
Click to collapse
Hi, that worked but still I can't see the sunrise 4g network. Which configuration did you select?
milanoleonardo said:
Hi, that worked but still I can't see the sunrise 4g network. Which configuration did you select?
Click to expand...
Click to collapse
I put LTE/CDMA/UMTS (auto)(PRL)
LTE it's the same as 4G
According to https://willmyphonework.net/ should 4G/LTE work on Your network.
mardrest said:
I put LTE/CDMA/UMTS (auto)(PRL)
LTE it's the same as 4G
Click to expand...
Click to collapse
I tried but still I can't see the LTE network, that's weird because it hairnet when I updated to Oreo. Is there a known issue with Android 8.0 and 4G networks?
JockeSve said:
According to https://willmyphonework.net/ should 4G/LTE work on Your network.
Click to expand...
Click to collapse
I also saw this page. What's strange it that this is something that came up when I updated to Oreo
milanoleonardo said:
I also saw this page. What's strange it that this is something that came up when I updated to Oreo
Click to expand...
Click to collapse
You tried doing an Factory Reset?

VoLTE Problem

My Moto G4 Plus VoLTE not working..When I try to make a call from Jio 4G ,it shows an error messege "Call Failed,try another method".But my all settings are ok...enhanced LTE mode also toggled on...I am able to access LTE internet but not VoLTE call...Theare are no VoLTE sign on top of the screen which was previously there..There is Only LTE sign.. Please help anyone.. _/\_
sanjibkumarchini said:
My Moto G4 Plus VoLTE not working..When I try to make a call from Jio 4G ,it shows an error messege "Call Failed,try another method".But my all settings are ok...enhanced LTE mode also toggled on...I am able to access LTE internet but not VoLTE call...Theare are no VoLTE sign on top of the screen which was previously there..There is Only LTE sign.. Please help anyone.. _/\_
Click to expand...
Click to collapse
You can try the foll...
settings -> more -> cellular networks -> Enable enhance 4g lte mode..
ajaikumarnadar said:
You can try the foll...
settings -> more -> cellular networks -> Enable enhance 4g lte mode..
Click to expand...
Click to collapse
Its already on
sanjibkumarchini said:
Its already on
Click to expand...
Click to collapse
from what incident this happened ?
ajaikumarnadar said:
from what incident this happened ?
Click to expand...
Click to collapse
Suddenly...I don't know why..its a software issue...
sanjibkumarchini said:
Suddenly...I don't know why..its a software issue...
Click to expand...
Click to collapse
then i think force reboot can fix it..
press and hold the power until your phone reboots..
if above doesn't work then...
hard reset your phone.. make sure you take a backup before this process..

4G volte LTE not showing

Volte LTE not showing...
How to fix it...?
Ashu_040601 said:
Volte LTE not showing...
How to fix it...?
Click to expand...
Click to collapse
Hello,
Try this :
*#*#869434#*#*
*#*#86583#*#*
_thib_ said:
Hello,
Try this :
*#*#869434#*#*
*#*#86583#*#*
Click to expand...
Click to collapse
I am having the same issue. I tried this and still doesn't show.
Anything else I can try.
My issues is that the phone connects to the carrier network . I can send/receive text messages and I can use data, but I cannot make or receive calls.
I contacted the carrier and they suggested I enable VoLTE but I do not have that option in any settings.

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