yashsingh1/xdaforums huggingface dataset:
[Sony Xperia XZ2 Questions & Answers] KOLIOSIS:
Gonna keep piling on/beating the dead horse better known as Sony Customer Support:

They cannot even answer as simple a question regarding availability of items listed, but, not for sale,on their very own web site.

The answer is the same every time, it's apparently from a script from at least a decade ago, referring you to retailers that do not stock the items.

Your time spent w/Sony Customer Service would be better spent playing Rock/Paper/Scissors with your imaginery friend of choice..... ;)
[Sony Xperia XZ2 Questions & Answers] New Optimus:
I think some things here might be a little wrong, VoLTE doesn't depend on band 12, it just means your phone call goes out as a VOIP call through the LTE DATA. Which means when the phone call starts it doesn't shut down the LTE radio. I have the xperia xz1, I used the usa oem.sin from the xz1 compact to get volte on tmobile, I typically am on band 4 or band 2 at my house and using volte it doesn't switch to band 12, unless that is the stronger signal.
[Sony Xperia XZ2 Questions & Answers] RockStar2005:
Hey Optimus,

That is correct. But the main issue is, at least when it comes to T-Mobile, T-Mobile does not allow your phone to access its prized Band 12 spectrum/bandwidth UNLESS your phone is certified VoLTE. In other words, you can't access Band 12 unless you have VoLTE, but you can't have VoLTE unless your phone is T-Mo VoLTE-certified (or has the "authorization" to do so).

Yes, exactly. But you had to go through the whole rooting ordeal in order to get VoLTE on your phone. What pisses me off about that is that we SHOULDN'T HAVE TO do that just to get something that is pretty much standard in 2018............VoLTE. That is why I DIDN'T buy the XZ Premium last year despite how much I wanted it, b/c I just didn't want to deal with having mediocre reception.

And yes, people shouldn't think that having access to Band 12 means you're gonna be using it 24/7. On my T-Mo LG V30 (which of course is VoLTE-certified since it's sold directly through T-Mobile), I def get Band 12 here and there, but surely not all the time. Not even most of the time, since in my area T-Mobile is already pretty strong. But like when I go to my elevator in the 4-story condo building I live in, pretty much every time I am IN the elevator, my phone switches to Band 12 b/c there's very little Band 2 or 4 there, but 12 as I'd mentioned earlier has twice the reach of the regular bands (2 & 4) and FOUR TIMES the capability to penetrate through buildings.
[Sony Xperia XZ2 Questions & Answers] New Optimus:
Yes, very good info. I live in Jacksonville Fl and I don't know if band 12 has had a substantial rollout yet. I remember when band 4 was just incoming..... lol
[Sony Xperia XZ2 Questions & Answers] JezJ:
EE doesnt support WiFi calling on H8266, only the H8216 model will work

For anyone on EE in the UK, the dual-sim variant (H8266) is not supported by EE for WiFi calling. I just flashed the single-sim firmware (H8216) and it now shows up where its supposed to and works fine...….
[Sony Xperia XZ2 Questions & Answers] RockStar2005:
Thanks.

Haha I C.

I don't know about substantial, but I assume you have T-Mobile, and the T-Mo map for 700 MHz/Band 12 shows it's been spotted, but maybe you should take a look yourself since I don't know exactly where you are in Jacksonville.

Yeah I use LTE Discovery too. Awesome app!
[Sony Xperia XZ2 Questions & Answers] New Optimus:
Yes I saw band 12 but it was brief then it went back to band 4.

well this is interesting, I am on MetroPCS, owned by tmobile using tmobile, but for some reason with my sony xz1 metro wifi calling and volte doesn't work. to get those pictures with it working I put in a straight talk tmobile sim, these 2 pictures are with metropcs sim in and band 12 is showing even without volte.
[Sony Xperia XZ2 Questions & Answers] Charusen:
Hi, I am in the UK and thinking of getting the Dual-Sim version from Amazon and flashing the single-sim firmware as per your experience.

Does the dual-sim function still work properly? Are you facing any errors or problems?

Thanks
[Sony Xperia XZ2 Questions & Answers] JezJ:
Dual-sim function is disabled and works as SD-Card only. I guess if EE add that model to the list, we can always flash back.

There may be other ways around it in the future I guess, maybe modifying the device id, we'll have to wait and see...

No errors or problems, all working perfectly. In network settings the dual-sim part is no longer listed and wifi calling is now available to select.
[Sony Xperia XZ2 Questions & Answers] Charusen:
That makes me reconsider going for the dual-sim version :(

There is no benefit except, in the future if I move networks, the dual sim functionality can be reused (after flashing).

I doubt EE will add that variant to the list as the dual-sim is not a regularly sold model. Only sold officially via Amazon or as an import. But miracles can happen...

Thanks for the info :good:
[Sony Xperia XZ2 Questions & Answers] chili_red:
RockStar2005

Got the RedPocket Sim in and nope, no VoLTE or VoWiFi, not surprised, it's not available on my unlocked S8+ either with it, but the signal here from RedPocket and the ATT network is so much better, I actually have a full 5 bars of LTE at the house and 2-3 inside Walmart as to where I had 1-2 bars at home and absolutely nothing at Walmart with TMO. Also notice I never lost my LTE signal on the back road coming home where it would go from 0-1 bar with TMO back there, that and with what RedPocket cost for a year of service I"m more than happy with what I"m getting now.
[Sony Xperia XZ2 Questions & Answers] RockStar2005:
Hey chili,

That's awesome though surprising that RedPocket actually outperforms T-Mo in your area!

In my area, I have excellent coverage. But if I didn't, I'd prob look into RedPocket for myself. Also, I prefer regular plans vs. prepaid, so that's another reason too. Again, I'm happy it worked out so well for you!

---------- Post added at 12:48 AM ---------- Previous post was at 12:15 AM ----------

https://www.phonearena.com/news/Sony-smartphone-downsize-business-profit-pursuit_id104459
[Sony Xperia XZ2 Questions & Answers] dhionisis:
Anyone updated there Xperia xz2 to android p beta?i see volte and WiFi calling enabled on phone service menu but I can make it work .can someone from the mods check that? *#*#4636#*#* and tap on phone settings and you will see both volte and WiFi calling enabled on T-mobile network
[Sony Xperia XZ2 Questions & Answers] dhionisis:
Not true

That’s not true I have the Xperia xz2 and I am in Chicago suburbs and I can tell you that band 12 has nothing to do with

Volte and WiFi calling,I use lte discover app on galaxy s9 and I have always hd voice volte on differents bands ,from what I

understand is not about band but if your phone is registered

to T-Mobile network for volte and WiFi calling,now about

the xz2 I can tell you that i see band 12 on my work place

all day but still no volte or WiFi calling,when I try to make a

call the phone goes to 3g or H+ and after the call it goes back to band 12 lte mode so I thing has to do with carrier settings,T-Mobile sends different settings for different devices ,I updated my Xperia xz2 to android p beta and I see volte,WiFi calling and carrier video calling on provisioned on the phone service menu by typing *#*#4636#*#* and tap phone info ,but still no hd voice or volte,when I try to make a call same thing back to 3g and after call ends back to band 12 lte so is not Sony but T-Mobile I think they get big discounts

on T-Mobile certified phone and I guess Sony doesn’t want to pay for that,they prefer to sell fewer devices with higher profits for them and not more devices with lower profits,this my 2 cent anyway
[Sony Xperia XZ2 Questions & Answers] hotcakes_shinku:
Hi guys, would like to ask. I do not see the settings for VoLTE on on my phone, but when I call another person I see the word HD on both my XZ2 and that person's phone, does that mean VoLTE is enabled and working? Thanks.
[Sony Xperia XZ2 Questions & Answers] dhionisis:
Maybe

If you still have Lte when you’re calling then yes you do , but if you see that the network goes from Lte to 3g or H+ then no,no HD voice without Lte ,that’s why is called VoLTE.now if you do have Lte which means you have HD voice I am very interested on what model of xz2 you have and what carrier are you using?
[Sony Xperia XZ2 Questions & Answers] dhionisis:
And finally Xperia XZ2 WIFI calling will be supported very soon

I was home today and I spend hours talking to Sony tech support and T-Mobile tech support after a long conversation with both Sony and T-Mobile,T-Mobile escalates the problem to their engineers and I think they call Sony so after few hours I received a call back from T-Mobile tech support to inform me that Sony will release in the coming weeks software update to enable WiFi calling and VoLTE.

From my understanding it will be no more than 1 month .
[Sony Xperia XZ2 Questions & Answers] hotcakes_shinku:
Yes both my phone and the phone I called were on LTE at the time. I think my current area might not have VoLTE coverage, which is why I don't see the settings for it. The test call I tried earlier was in a different area, but I didn't check whether I had the settings for VoLTE. Maybe I'll try test calling again in this area when I find some one to test with.

Edit: My XZ2 is the H8266 model. I'm from Malaysia on the Celcom network.
[Sony Xperia XZ2 Questions & Answers] Berzerker7:
For anyone on T-Mobile US here, please update us when you receive information if this software update to enable VoLTE/WiFi Calling ever comes out.
[Sony Xperia XZ2 Questions & Answers] sagacidealist:
What about XZ2 Compact?

Hey, that's great news! I was thinking about returning the XZ2 Compact that I had just bought. Do you have any updates on this? Any official mail clarifying this and which devices would be updated?

I have the H8314, BTW. The phone is amazing otherwise.
[Sony Xperia XZ2 Questions & Answers] sjforion:
I too would like to know if that will also apply to the XZ2 Compact (H8314) while I am still in the Best Buy return period for the next couple of weeks. It is a nice phone, but it's really disappointing that they can't get this sorted. I imagine the firmware change on the compact can't be too different, being the same CPU / band support.

According to some other posts online, it's been said they are not pursuing "certification" for the XZ2C but if that has changed, it would be nice to see something official.

Haven't made 10 posts, and can't post links. Google around for these:

Reddit post suggesting they will not be pursuing certification (question was when xz1c volte support happened to determine why it wasn't available on the xz2c):

Reddit: XZ1 Compact T-Mobile US users: Did VoLTE work on release date or come through an OTA update?

Unanswered Sony support question on T-Mobile VoLTE support for XZ2C:

Sony Support: Xz2 compact volte not working on tmobi
[Sony Xperia XZ2 Questions & Answers] dhionisis:
Well everyone need to know one thing,the more people call in for WiFi calling on T-Mobile tech support not customer service the better the chance to release the software,what you think if T-Mobile receive 1000 call to tech support for that phone?they will release the software A.S.P and when I talk to them they promised that they will release the software in few weeks ,I am big customer for them so when I asked if they will release a software to enable WiFi calling ,I told them I bought more than Xperia XZ2 so I need to know if you will release software to support WiFi calling or not because I need to return the devices if you will not release software to support WiFi calling.they said they working on it and will release the software very soon.i don’t think will lie for something like this.we will see.
[Sony Xperia XZ2 Questions & Answers] KJKingJ:
I've just got my hands on a H8266 today (Europe, Dual SIM) and as mentioned previously in this thread, there is no support on EE for WiFi calling or VoLTE out of the box with this phone - only the single-SIM H8216 is supported. Whilst it's possible to flash the single-SIM firmware and get VoLTE it'd be a shame to lose the dual-SIM functionality, even if i'm not planning on using it at the moment.

On a whim, given that the VoLTE settings are part of the OEM partition, I wondered what would happen if I took the oem*.sin files from the EE customised H8216 image, overwrote the ones in the UK customised H8266 image and flashed the firmware to my phone with newflasher. Amazingly, it all appears to work! I can make a call whilst on 4G, and I remain on 4G instead of dropping down to 3G. WiFi calling wasn't on by default, but I was able to enable it and successfully make a call. The Phone Info section on the testing menu also have the VoLTE provisioned and WiFi Calling provisioned flags set.

I'm not quite sure if i'll run in to any adverse effects with this, or if it'll be wiped out on the next firmware update... but for now this seems like a good way to at least get EE's VoLTE settings whilst still keeping the dual-SIM capability!
[Sony Xperia XZ2 Questions & Answers] MartinX3:
I flashed the German H8266 on my Hongkong H8296.

Now I have VoLTE an VoWifi and it works great.

O2 is my provider.
[Sony Xperia XZ2 Questions & Answers] Vengeance66:
I don't have VoLTE in my phone. I am from Macedonia and I have the GENERIC version of the firmware.
[Sony Xperia XZ2 Questions & Answers] Haldi4803:
Sems like WiFi Calling is working on Salt Switzerland but nothing on VOLTE :(
[Sony Xperia XZ2 Questions & Answers] pakole:
Wifi Calling working on Android P Beta.
[Sony Xperia XZ2 Questions & Answers] ryotaru:
You're on T-Mobile US? How about VoLTE? Does it still drop from "LTE" to "H" when you make a call?
[Sony Xperia XZ2 Questions & Answers] pakole:
I am on T-Mobile US. How do you check VoLTE? I will check on the LTE thing next time I have a call. In the beta it says 4G+ instead of LTE and 3G instead of H. Thanks.
[Sony Xperia XZ2 Questions & Answers] ryotaru:
Thanks for the info! I think you can tell VoLTE by making a call. If it goes to 3G instead of 4G, then VoLTE isn't working (somebody please correct me if I'm wrong).
[Sony Xperia XZ2 Questions & Answers] dhionisis:
How did you figure that out?I have xz2 h8266 and I have Android 9 beta I can see both options enabled on the menu ,wifi calling and VoLTE but no one working.so how did you make it work wifi calling?

---------- Post added at 05:10 PM ---------- Previous post was at 05:09 PM ----------

How did you figure that out?I have xz2 h8266 and I have Android 9 beta I can see both options enabled on the menu ,wifi calling and VoLTE but no one working.so how did you make it work wifi calling?

---------- Post added at 05:32 PM ---------- Previous post was at 05:10 PM ----------

It is time to get rid of the Sony Xperia xz2 and never buy Sony phone again.i don't know what is there problem with USA carriers but to me it sounds stupid to loose the biggest cellphone marked no matter what issue you have.i try both T-Mobile and Sony and it looks like is all about the money.tmobile wants money to certifie the xz2 and Sony is not willing to pay.well I just read a post about Sony cellphone sale is falling every year in USA and it seams that they don't care.well it is time for USA customers to start eliminate Sony products from their homes,not just cellphone everything,if you want to buy something and you see Sony stay way go with different brand that respect USA customers.they are so stupid that from 3rd place selling cellphone in USA they went to the bottom.there customer support is useless,all they say is no,yes, maybe,I don't and thank you for contacting Sony .I even send emails to corporate, customer support, development department and no one but no one answered.off course I blame T-Mobile to because instead of trying to resolve the issue they don't do anything.you see they know that no us carrier has support for the xz2 so they don't care to.i just listed mine on eBay but if someone want the phone just PM me is like new not used because I use iPhone 7 and I was trying to sell the iPhone but when I found out that no support for wifi calling and VoLTE I removed from eBay and now I listed the xz2 with screen protector,case everything in the box unused.lets see how much I will loose ,I paid more than $900 for all the package and I am hoping to get $600 , anyway if someone is trying to buy Sony and have TMobile think twice that's my advice to you.
[Sony Xperia XZ2 Questions & Answers] pakole:
wifi calls

I know wifi calling is working because in my home I have no signal. I have been able to start calls and move around my home while on a call without drop.

---------- Post added at 03:44 PM ---------- Previous post was at 03:42 PM ----------

I made a call. The 4G+ went from to 3G during my call.
[Sony Xperia XZ2 Questions & Answers] dhionisis:
That’s not WiFi calling my friend.wifi calling is enabled when you have no signal and you are connected to WiFi and the call goes through WiFi,so basically will say at network T-Mobile WiFi not Tmobile,the fact that you are able to make calls is that on Android 9 it seams that the xz2 has boost of signal.
[Sony Xperia XZ2 Questions & Answers] alexandroid5:
I can confirm that VoLTE and WiFi calling are NOT working on Android P beta for T-Mobile. The options are there in the menus but they don't work. I really wish T-Mobile would fix this :(
[Sony Xperia XZ2 Questions & Answers] Ascertion:
So, it looks like this hasn't been solved then huh? Shame.
[Sony Xperia XZ2 Questions & Answers] dhionisis:
No my friend. They said they resolve the issue but than for some reason they said no.is all about the money ,tmobile asked to much to modify the software to work with tmobile network and Sony is not willing to pay for it.you know they get paid by the sales.that is how it works with between the carriers and the cellphone manufacturers.so I just sold the all my Sony xz2 on Ebay and left tmobile because they promised that they will fix the problem and they never did.guess what I had 25 lines with them and when they saw all the line got transferred one by one at different carrier they start calling me non stop from the corporate ,they offered me free service for 6 months when I explained what happened but I refused, I said is not about the money but about the service when you say we will fix the issue you have to fix it otherwise just say from beginning no it will not work.i went to very cheap MVNO network and when I told them 25 prepaid lines transferred I got free phones and 20% off on the bill for life.
[Sony Xperia XZ2 Questions & Answers] Pascal536:
Hello,

I have a sony XZ2 french customized firmware. I had the VOLTE activated by my telephone operator. I had confirmation of this activation.

However, the VOLTE option is not available in my settings. I contacted SONY technical support who confirmed that the XZ2 was compatible VOLTE. I contacted my phone operator who activated me an additional option in connection with a playstore application. This application is called WORLD & YOU and must allow me to call and exchange SMS via the WIFI network abroad.

When I use this application and I phone in France, the call is well established in LTE. Pascal
[Sony Xperia XZ2 Questions & Answers] Wegener22:
Really? I flashed a H8296---->H8266 (german) and there's no

VOLTE or VoWIFI (tested with T-Mobile and Vodafone)

Both contracts support VOLTE/VoWIFI (tested on other Phones).
[Sony Xperia XZ2 Questions & Answers] MartinX3:
There?

Maybe because of your provider.

Or your hardware revision?

I'w got revision 2.

That's very weird.
[Sony Xperia XZ2 Questions & Answers] Wegener22:
Thats weird, indeed.

I will try the newsflasher session again, following the instructions step-by-step

with a new downloaded 8266-de firmware. Hope the best.

At this time the options for VoLTE/ViWiFi are greyed out.

Thanks!
[Sony Xperia XZ2 Questions & Answers] Wegener22:
Success!

Just downloaded the ROM again (seems that the former ROM was somewhat corrupt),

flashed it and ...voila...VoLTE and WiFi Calling is there!

8266 ROM (in 8296) has the full RAM (6GB), that's fine.
[Sony Xperia XZ2 Questions & Answers] lenuisible:
[MENTION=3198670]Wegener22[/MENTION] and [MENTION=6031898]MartinX3[/MENTION] could you please share info about how did you flash the ROM ?

Did you use Newflasher ?

Does it require to unlock bootloader ?

FYI I'm a XZ2C owner, and I'm struggling to find how I could unlock VoWifi (I purchased a naked phone and don't have the option in the settings, my provider supports VoWIFI on XZ2C only when you purchase it from them...)

Thanks in advance !
[Sony Xperia XZ2 Questions & Answers] MartinX3:
First you should look, if in xperifirm is a better firmware (without telco provider) for your XZ2C.

And don't use the XZ2 firmware.
[Sony Xperia XZ2 Questions & Answers] lenuisible:
Yep, there is a different firmware (R13 instead of 7 in France), but I really don't know if it will enable the setting. If there is no big risk I'll give it a try (I can work from countryside house, but I have terrible mobile reception and need to be able to receive calls from customers)
[Sony Xperia XZ2 Questions & Answers] MartinX3:
Is france your country?

if not I would recommend "europe" if your are a citizen of europe.
[Sony Xperia XZ2 Questions & Answers] lenuisible:
Yes I'm in France. Xperifirm shows the same firmware for France and Germany, but with different revision numbers (R13 for Germany, R7 for France)
[Sony Xperia XZ2 Questions & Answers] lenuisible:
Well, I flashed latest version from Germany, but the VoLTE/VoWIFI are still not there...
[Sony Xperia XZ2 Questions & Answers] MartinX3:
H8266 German Firmware.

O2 Provider.

Working at my site.
[Sony Xperia XZ2 Questions & Answers] eelpout:
did you lose the use of the 2nd SIM slot then?

(apologize if this has been asked and answered already)
[Sony Xperia XZ2 Questions & Answers] ryotaru:
You won't lose the use of the 2nd slot. I flashed my 8296 with US 8266 and it still shows both slots in the settings.
[Sony Xperia XZ2 Questions & Answers] MartinX3:
I could still use the second slut in Germany. :)
[Sony Xperia XZ2 Questions & Answers] GreatLordAnt:
Best typo today lol
[Sony Xperia XZ2 Questions & Answers] MartinX3:
Woopsi :silly:
[Sony Xperia XZ2 Questions & Answers] fredhdx:
I am on US Cricekt network and has no Volte with my XZ2. I talked with Cricket people and they told "any phone that supports Volte will automatically receive the function". So it sounds like a Sony problem. Do you think Sony will support Cricket (or ATT since it's using ATT network) anytime soon? Otherwise I might have to sell my XZ2 and switch to OnePlus 6 maybe (read somewhere it has VolTE).

And the Sony customer service just closed my chat while I was typing. Really goos.
[Sony Xperia XZ2 Questions & Answers] Ascertion:
Sony is making no attempt to unlock VoLTE for the xz2. You will be better off switching to OnePlus.
[Sony Xperia XZ2 Questions & Answers] fredhdx:
Thank you for replying. Can I ask a clarification question?

I have talked with both Sony support and Cricket support. Both parties told me that "they don not have any control on their side. If the phone is enabled/carrier enables it on SIM, the feature should be automatically on". I also got a comment from Cricket that because of my speed is capped at 3G speed, i will not be able to use Volte. But regardless of the speed, I should have the feature on first with SIM right? Currently when I check Test/Phone Info, the "VoLTE Provisioned" tab is disabled. But I put the same SIM card back to my iPhone SE, I can turn on VoLTE feature (not sure if it works or not though). So I really don't know if VoLTE is a device based feature or a carrier based feature.

Anyway, I do not want to switch to another device because I really don't like OLED screen. It burns my eyes. I guess I might have to bring two phones with me now.