VOLTE Call Drop Issue - Sony Xperia M4 Aqua

Does anyone have the same issue where your carrier has LTE but doesn't support VoLTE for E2303,2353,2306 etc variants and ur phone shows 'Mobile Network Unavailable' when u are on LTE and trying to call someone else?

No, drop from LTE to 2G/3G works fine here when I try to call someone.

Related

Volte problems with Vodafone India

Although Voda says Poco F1 does not support Voda Volte , it works although with problems for me.
No issues with outgoing calls, 4g keeps on working, hd call displayed when calling another Volte enabled number.
Incoming calls do not work on Volte and network switches to 3g/2g when calls come.
Anybody else having this issue or using Voda india and mention their experience.
No, not found any issues with 4g network either, i am able to recive calls on 4g networks in gujrat. For confirmation use 4g switcher app and manually select lte inly.
Abbey Bhatt said:
No, not found any issues with 4g network either, i am able to recive calls on 4g networks in gujrat. For confirmation use 4g switcher app and manually select lte inly.
Click to expand...
Click to collapse
4g is working fine. I meant Volte. Incoming calls switch over to 3g/2g network whereas outgoing continues with 4g
Run the below code in your dialer app manually. You should see a message stating "Volte Carrier check disable" else run the code again.
After 30 seconds your volte network should be retored. Pull down the notification bar to check for the volte symbol.
*#*#86583#*#*
Cheers!!

Internet not working while on a call

I have just bought poco f1. Mostly i am happy with my decision. I use bsnl sim as my first sim and jio as my second with data assigned to jio. Volte is also enabled. I see that when i am on a call the internet is not working , 4G icon also vanishes. I am sure this has a simple fix, someone please suggest.
kishtyle said:
I have just bought poco f1. Mostly i am happy with my decision. I use bsnl sim as my first sim and jio as my second with data assigned to jio. Volte is also enabled. I see that when i am on a call the internet is not working , 4G icon also vanishes. I am sure this has a simple fix, someone please suggest.
Click to expand...
Click to collapse
I'm pretty sure when you are on a call on a network, you can't use data on the same network unless you have volte enablef. I could be wrong. :angel:
kishtyle said:
I have just bought poco f1. Mostly i am happy with my decision. I use bsnl sim as my first sim and jio as my second with data assigned to jio. Volte is also enabled. I see that when i am on a call the internet is not working , 4G icon also vanishes. I am sure this has a simple fix, someone please suggest.
Click to expand...
Click to collapse
When you're on call the 4G symbol disappears and you'll get only 3G. It's happening with me. Internet is working and speed is also good.
That is normal, had it on a lot of phones.
kishtyle said:
I have just bought poco f1. Mostly i am happy with my decision. I use bsnl sim as my first sim and jio as my second with data assigned to jio. Volte is also enabled. I see that when i am on a call the internet is not working , 4G icon also vanishes. I am sure this has a simple fix, someone please suggest.
Click to expand...
Click to collapse
With volte services on u will get 4g data while on calls. If u r not on Volte the data network will change to 3g or 2g and data will keep on working .
But there's a catch , in dual sim mode only one sim data is active . So if u have Jio and BSNL sim and Jio has data
1. If BSNL call comes u won't be able to access data during data.
2. If Jio calling is used u will get 4g data during call also.
U can try putting Jio in 2nd sim slot and enable dual 4g and also enable use 2nd sim data if volte call.
sanjay0501 said:
With volte services on u will get 4g data while on calls. If u r not on Volte the data network will change to 3g or 2g and data will keep on working .
But there's a catch , in dual sim mode only one sim data is active . So if u have Jio and BSNL sim and Jio has data
1. If BSNL call comes u won't be able to access data during data.
2. If Jio calling is used u will get 4g data during call also.
U can try putting Jio in 2nd sim slot and enable dual 4g and also enable use 2nd sim data if volte call.
Click to expand...
Click to collapse
Thanks for the reply. I think thats what is happening with me, when i get a call on bsnl my jio network is down.
sanjay0501 said:
With volte services on u will get 4g data while on calls. If u r not on Volte the data network will change to 3g or 2g and data will keep on working .
But there's a catch , in dual sim mode only one sim data is active . So if u have Jio and BSNL sim and Jio has data
1. If BSNL call comes u won't be able to access data during data.
2. If Jio calling is used u will get 4g data during call also.
U can try putting Jio in 2nd sim slot and enable dual 4g and also enable use 2nd sim data if volte call.
Click to expand...
Click to collapse
I have enabled dual 4g and also enabled to use data on 2nd sim if volte call, but still i cannot access data while on call. I have airtel in slot one and jio in 2. Data is selected on 2nd mostly i use airtel for calling. Any new ideas?
Network connection should work even on calls, but limited to 2G or 3G. This is not normal on first sim card.
Enable this.

Volte not working while in roaming on poco f1. INDIA AIRTEL/VODAFONE

I have two roaming sim card both showing lte (internet works fine but when call its change from lte to 3g).
Volte is not showing/working in roaming area.
(Ims status not registered)
manishcs1 said:
I have two roaming sim card both showing lte (internet works fine but when call its change from lte to 3g).
Volte is not showing/working in roaming area.
(Ims status not registered)
Click to expand...
Click to collapse
Working for me since I bought this device.
Ps : using Jio 4g
Must be a carrier problem. If the carrier doesn't have volte support in that area or for roaming, it will fallback like old days -_-
..
shbhm111 said:
Airtel and Vodafone both carrier didn't introduced VoLTE yet. Use Jio 4G you'll see VoLTE icon on your status bar
Click to expand...
Click to collapse
Jab pata nahi hota to kyun gyaan jhaadte ho? Thoda Google bhi use kar liya karo?
Why do you make such un informed replies?
As of now both Vodafone and Airtel support Volte in home network only. The required modifications to enable Volte while roaming are being done. This is according to Airtel customer service. So this has nothing to do with our handset or its software.
shantanil said:
As of now both Vodafone and Airtel support Volte in home network only. The required modifications to enable Volte while roaming are being done. This is according to Airtel customer service. So this has nothing to do with our handset or its software.
Click to expand...
Click to collapse
I am using vodafone, volte works for me while roaming also. Have tried it in Aurangabad while my sim is from Mumbai.
But today seems to be a problem with networks volte with Vodafone is not available in home network also.
PS customer service guys are pathetic and make up stories for getting out of queries.
Volte Restore
Run the below code in your dialer app manually. You should see a message stating "Volte Carrier check disable" else run the code again.
After 30 seconds your volte network should be retored. Pull down the notification bar to check for the volte symbol.
*#*#86583#*#*
Cheers!!

Cannot enable VoLTE

Hello
I'm having this issue, I cannot enable volte. Vowifi is enabled and working fine. I have tried pretty much everything, the dial numbers etc.
I'm running stock miui global 12.2.7.
I'm posting a couple of screenshots, one is from the dial *#*#4636#*#* phone information and the other from network settings where volte toggle is nowhere to be found.
If you get 4G you have VOLTE. If you get 4G+ you have VOLTE-E. If your connection drops back to 3G in calls its because of either calling another network or the other phone is in a 3G area.
shivadow said:
If you get 4G you have VOLTE. If you get 4G+ you have VOLTE-E. If your connection drops back to 3G in calls its because of either calling another network or the other phone is in a 3G area.
Click to expand...
Click to collapse
Hello and thanks for the reply.
The area I live in has mostly 5G coverage and when not available, 4G+ and 4G.
All I'm saying is I can't enable it as you can see in the screenshots. There's no option in the settings, and the option is unclickable in *#*#4636#*#* menu.
The Volte sign never shows in the status bar, and in the call history, I don't get the HD sign next to the names, only the WiFi - when the call is on VoWiFi. - which is logic, sign I can't get to turn it on.
Thanks in advance.

LTE not dropping to 3g to receive calls

Hello all!
I have a Samsung A01 (SM-a015AZ) unlocked from Cricket, being used in Pakistan. Internet over LTE works perfectly, however the phone does not support VolTE and so it is only possible to send sms or call over 2g/3g. There's no problem when making a call as the phone automatically drops from LTE to 3g, however that does not happen when someone else tries to call me. The phone does not drop from LTE, nor do I even get any missed calls/sms notifications, but to the person calling me it seems like my phone is unreachable.
There are 3 options present in the preferred network mode (LTE, 3g, 2g) If I set it to 3g, all calls work fine, but with really really bad internet (EDGE). I have even tried to see if any settings in the advanced network configuration menu (By dialing *#*#4636#*#*) would make a difference, however I've had no luck so far. I would really appreciate it if someone can help me with this.
tl;dr Samsung A01 drops from LTE to 3g to make calls, however does not drop when someone else is calling and so does not receive any calls.

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