Volte not working :(

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MatthewIsLost

New member
Dec 24, 2020
1
0
Xperia XA2 H3113 Android 9 (50.2.A.3.77)
Hi,

I recently got an Xperia XA2 and I can't use VOLTE.

My previous phone the Samsung j5 pro worked, but the XA2 keeps dropping down to H+.

I have contacted Vodafone in Brisbane Australia and they say it is an issue with the handset and it may need an update.

Any help would be appreciated.

I tried *#*#4636#*#* , but VOLTE provisioned is greyed out and off.
 
Jul 14, 2020
9
1
ANN ARBOR
Same problem here for over a year. *#*#4636#*#* dimmed out. Also see wifi calling under that is also dimmed out. Sometimes I spend a few days or a couple weeks trying to solve this with AT&T and a little bit with Sony. But then I have to get back to work eventually without an answer. No one seems to have an answer. Did you ever resolve this?

Sony support has informed me they have XA2 customers with VoLTE working on AT&T, and here is more confirmation it should work from Freedom Mobile.
 
Jul 14, 2020
9
1
ANN ARBOR
Hey @MatthewIsLost.
I'm not sure if you still have your XA2 like I do. I'm busy and just kept using it. I'm being forced to do something finally because my carrier is shutting down 3G and they think I have a 3G phone because it keeps switching to 3G for voice calls for months or maybe a year and a half. When I first bought the phone the switches in the OS were there for VoLTE and WiFi-calling, but I didn't know what they were and was busy. When I would work on my H or H+ calls problem every few months with AT&T I learned I wanted those features. Never could get it. Sony was patiently helpful over the last couple years about this and advised they would not update the phone OTA with an update that would take away any features of the phone such as VoLTE and WiFi-calling. They also gave me the URL last week that shows the XA2 as a Sony phone with VoLTE at this link...



When it opens, click the "Applicable Products..." as shown below.



1626657000405.png



1626720226397.jpeg



With this recent push from AT&T to get a 4G phone, I finally decided it's time to figure this out. I spent some hours with tech support at AT&T and finally one rep listened to my symptoms and ran tests for about 45 minutes and finally asked me if my phone said AT&T at the top. It did not. That led to me finally spend more hours figuring out how to flash my Sony. Hadn't flashed with fastboot and adb since my old MotoX. Dialing *#*#4636#*#* has also shown dimmed out buttons like yours. No one could tell me what that meant. By the way, I stopped by Verizon store and they were very helpful and put in a Verizon SIM they had lying around and my phone booted with it and my screen said Verizon at the top left as it was supposed to. That was done with the flash of LineageOS ROM on my phone.

A few days ago I used the installation instructions at LineageOS to put LineageOS 18.1 on my XA2, so right now I'm running Android 11 (LineageOS 18.1) and have been testing it for a few days. Getting a new SIM I hope soon, and also hope to get a cleaner flash of LineageOS before that SIM. I still have trouble with my signal strength icon and it still doesn't say AT&T in the top left of my screen, but it now says AT&T in the settings menu next to signal strength icon. I also now have the VoLTE switch in Settings/Network/Mobile Network where it should be, and WiFi-calling switch is in the Phone app settings under calls where it should be, and they are also showing as all turned on now in *#*#4636#*#* menu. So it is real progress on learning something. Not sure what yet. Since I flashed, it doesn't switch to H or H+ any more on calls, but whenever I make a call it switches from LTE to 4G, so I'm still not allowed VoLTE for some reason.

Malware? With LineageOS, I also installed Protectstar's Anti Spy and it identifies "Data Transfer Tool" as malware and that the program's source is unknown. I cannot delete it. Search reveals a regular Data Transfer Tool is a Google app. So could this be a fake version of the real Google app, or a false positive? No idea. Maybe if Data Transfer Tool really is malware or is fake version of the real app that adds reporting capabiliy, could it be such a good fake that Google won't let me delete that part of the OS. I also accidentally found 1 app had permission to use Unrestricted Data and it was Google Play services. I don't know if it is supposed to, but I turned it off. The thinking on my part is it would fit in with how my phone behaves. It's like there is never too much damage, it has mostly been like someone is in the way hampering me and getting all my data. Makes it difficult to grow a business over years.

Also after this new Lineage flash, I noticed at boot up, even though I always keep location turned off, the little tear drop icon indicating "location on" would show up at the top of my screen for 1-2 seconds as though reporting my location. As I drove around town and tried to keep tabs on my signal I would see the location being turned on and off again and again from time to time. Since I reported this over email and voice calls, it seems to have stopped. Since I don't know much, I still think there is malware. I learned some time back there is SIM malware. SIMs have microprocessors too. Check out this...


I hope to have a cleaner flash of my XA2 today or tomorrow and a new SIM soon to get my phone to say AT&T at the top. We'll see.

If anyone knows where I can read about securely overwriting my phone storage without losing the ability to flash a new ROM, it would be great to hear from you. I thought I remembered using TWRP years ago with an option to format and it took a long time for a 32 GB phone as it should. But I wasn't able yet to confirm on the Net that TWRP overwrites all partitions. I see the "fastboot format" but something I read made me think it was only for the user data. I have lots to read.
 
Last edited:
Jul 14, 2020
9
1
ANN ARBOR
Update July 31, 2021: My posts will continue about this problem at my URL wigglemylegs.com. I am continuing to look for technical answer for how AT&T can say my phone is 3G when they have seen my phone talking to them live on 4G, using LineageOS 18.1. If anyone knows how to straighten this mess out with AT&T it would be great to hear from you. They are trying to force my 4G LTE phone off their system by February 2022, by claiming it is only a 3G phone.
 
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Old_Mil

Senior Member
Aug 30, 2018
50
13
Xperia XA2 H3113 Android 9 (50.2.A.3.77)
Hi,

I recently got an Xperia XA2 and I can't use VOLTE.

My previous phone the Samsung j5 pro worked, but the XA2 keeps dropping down to H+.

I have contacted Vodafone in Brisbane Australia and they say it is an issue with the handset and it may need an update.

Any help would be appreciated.

I tried *#*#4636#*#* , but VOLTE provisioned is greyed out and off.

AT&T (and I presume it's MVNOs) is not just instituting a VoLTE only policy, they are instituting a device whitelist. So even if your phone is VoLTE capable and can use this technology on say T-Mobile, if it isn't on the AT&T whitelist, it is banned from their network. So aside from the "we must redeploy bandwidth" reason, AT&T is using this change as an excuse to strike down BYOD and presumably boost handset sales...as well as the monetization of their customers by giving them handsets with preinstalled software that can more easily harvest their information.
 

Yndi

Senior Member
Nov 12, 2011
257
65
Hey,
I just sumbled upon this threat because I'm trying to get VoLTE working on my mothers XA2 Ultra. Old_Mil is right with what he said but there is some Qualcomm tool to import the setting for a carrier to the modem. I did it for my old OP 3. But it's probably very risky to brick the modem.
If you really want I'll look for the link and some BG info.
 
Jul 14, 2020
9
1
ANN ARBOR
I've been so busy I haven't looked into any of that fix for myself. Anyone else have anything?

I spent many hours over years trying to familiarize myself with the technology involved on my XA2 and learn how to fix my phone with AT&T's help. They didn't want to help. They tortured me for years by removing my VoLTE after the first 2 months, by reclassifying my XA2 as 3G so their towers won't accept me. You can read about it at my handyman URL of

wigglemylegs.com

where I posted many details. If you scroll to the bottom of long thread you see a dateline summary. AT&T HQ told me they could see my phone was erroneously classified as 3G in their tables and they could see that it was clearly a 4G LTE phone, but they didn't have the resources to fix it. When I opened a complaint with the FCC they wrote a reply denying this. Their legal out when faced with getting caught up in corruption is to offer a free phone. They offered me several models of free phones, but I didn't want it, because it is the principle of the thing that is wrong. I currently am on Lineage OS (Android 11) using voice apps that use data only like Whatsapp and so forth. Works great. Limited on calling regular numbers, so use others for that. The HD voice quality is just super!!

May the VoLTE be with you!!
 
Last edited:

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    Xperia XA2 H3113 Android 9 (50.2.A.3.77)
    Hi,

    I recently got an Xperia XA2 and I can't use VOLTE.

    My previous phone the Samsung j5 pro worked, but the XA2 keeps dropping down to H+.

    I have contacted Vodafone in Brisbane Australia and they say it is an issue with the handset and it may need an update.

    Any help would be appreciated.

    I tried *#*#4636#*#* , but VOLTE provisioned is greyed out and off.

    AT&T (and I presume it's MVNOs) is not just instituting a VoLTE only policy, they are instituting a device whitelist. So even if your phone is VoLTE capable and can use this technology on say T-Mobile, if it isn't on the AT&T whitelist, it is banned from their network. So aside from the "we must redeploy bandwidth" reason, AT&T is using this change as an excuse to strike down BYOD and presumably boost handset sales...as well as the monetization of their customers by giving them handsets with preinstalled software that can more easily harvest their information.
    1
    Update July 31, 2021: My posts will continue about this problem at my URL wigglemylegs.com. I am continuing to look for technical answer for how AT&T can say my phone is 3G when they have seen my phone talking to them live on 4G, using LineageOS 18.1. If anyone knows how to straighten this mess out with AT&T it would be great to hear from you. They are trying to force my 4G LTE phone off their system by February 2022, by claiming it is only a 3G phone.