Hi Guys,
1. I am NOT an expert as to how VoLTE works in the back end.
VoLTE is the use of LTE to carry voice calls, as opposed to falling back onto 3G / 2G to carry the voice call. Advantages include, lower connection time, wideband audio, etc.
I've recently spent some time changing the CID and firmaware on my HTC 10 to one that is region specific to enable VoLTE on my handset.
It appears the way Apple implements carrier settings means that different carrier settings can be delivered to any iPhone, but it appears Android is currently managing this differently, as OEMs are creating variants of the software to cater for each region/carrier's variations.
What this means for me is, even if I purchase an unlocked device, if it isnt from my region, I will likely have to do extensive modification to enable VoLTE.
Does anyone know if Android N manages VoLTE differently? What's el-Goog thingking here?
Hello,
i have 2 phones one is sony xperia m4 aqua another is blackview bv7000. On both phones from different reasons was reflashed official firmware. Before flashing firmware formating (total format including bootloader) was done on both devices. Now on both devices is exactly same problem data works but it wont connect to voice service when checked under *#*#4636#*#* > System information.
I tried all available network types (gsm cdma, wcdma, LTE, and all same with auto (PRL) option) but non seems to connect to voice service allowing to make voice calls. Only LTE seems to work but as soon as call is done it switches back to GSM and "we" are back at no service. The sms works but only sometimes.
Also tryied reflashing different versions of official firmwares . All work but with same problem.
The sim i tested it with is working on all phones but these two.
I dont think this is some kind of device problem rather this is solely software problem.
When i checked on my xperia xz premium (which is working fine) *#*#4636#*#* > System information under baseband was available all kinds of regions but on these 2 mobiles there is only america nothing more. Also didnt choose any of these regions on any of mobiles.
Any help would be very appreciated because i have 2 fine phones sitting in shelf because of this "bug".
The phone is relatively new and since it's not mainstream most carriers don't support it yet. Some people say they have VoLTE enabled and it works but I personally switched to Singapore EX and it seems VoLTE isn't detected at all so I started digging and it seems this issue is present in most Chinese phones. (https://forum.xda-developers.com/t/guide-activate-volte-and-vowifi-simple-and-clear.4116051/) In this thread they used the Qualcomm tool and exploit the bug in EngineerMode on OnePlus phones which we don't have an access to and since we can't root or unlock the bootloader we can't modify build.prop or change any system files.
-----Maybe it's my carrier, maybe it's the Singapore ROM so please if VoLTE and VoWifi works for you could you post here which country you're on, which ROM version and if you changed region before or not.------
First a warning: If you aren't tech-savvy, experiencing issues or want to potentially turn your phone in a paper weight do NOT try this at the moment. We do not have the tool to restore your phone back (wiping data might work but idk). You can send your phone to Oppo for repair but you might have to wait for a month or two.
I don't know if you need to unlock your phone from the other thread to have access to this mode(I did have it all decrypted during this test) but in addition to the *#808# engineer mode and *#*#4636#*#*(Where you can check if you have VoLTE enabled) I found we have access to *#36446337#.
In *#36446337# I managed to enter "Protocol test switch" -> "MBN TEST" and switch my profile from Common-Commercial(I think it was this one) to Commercial-DT-VOLTE. The phone rebooted and everything is fine but "MBN Validate" is giving me an error when I run it and I can't test if it works because I'm currently out of the country and my temporary SIM provider doesn't support VoLTE.
It's probably nothing and the error is because of the lack of developer files on the ROM but I need people who can test if these profiles act like the flashing from the Qualcomm tool in the thread mentioned above.
So once again if you don't have VoLTE enabled and are feeling a bit courageous - give it a try.
I think the problem maybe for those that changed to Pakistan build on Android 10 and then switched to Singapore ex to get ColorOS 11 and dual SIM meant that things like VoLTE do not work on those builds.
I did it a different way as wasn't bothered about dual SIM. I was on A.46 UK , waited for EU to get ColorOS11 , then switched to EUEX on sec5 and downloaded ColorOS11 c.57 through Belgium VPN.
VoLTE is working for me. it's not present in SIM settings( WiFi calling is) however when I look at my call log there is a VoLTE HD icon next to all my calls, so is working.
Since being on ColorOS11, I have tried several different regions on SEC tool, EUEX dual SIM, Singapore EX, back to GB CPW to check still works and now back to EUEX. Build number always changes to different region in about phone when I have made any changes and check however VoLTE has always remained working for me and is showing as provisioned in engineer mode.
I am from Germany and have a phone with Vodafone FW originally. I switched region to Singapore EX, than installed the Pakistan FW and got C.5 and C.6 via OTA. I switched the region to EUEX (DUAL SIM) and didn't receive the update to C.57, so I switched back to Singapore EX and got the update to C.57 when using VPN Hongkong, which was quite funny.
VoLTE and Wi-Fi calling is working fine with Vodafone, but you can't toggle it in the hidden service menu, it's just active! You can activate or deactivate Wi-Fi calling in the regular settings, but VoLTE is just there, you can't deactivate it.
Both Wi-Fi calling and VoLTE are shown in the bar on the top. With the former Vodafone FW, VoLTE was not shown with an icon, but it was nevertheless working.
Hy here T-Mobile shown volte and Vodafone don't shows but on the status bar there is the volte symbol
MeTheRebel said:
The phone is relatively new and since it's not mainstream most carriers don't support it yet. Some people say they have VoLTE enabled and it works but I personally switched to Singapore EX and it seems VoLTE isn't detected at all so I started digging and it seems this issue is present in most Chinese phones. (https://forum.xda-developers.com/t/guide-activate-volte-and-vowifi-simple-and-clear.4116051/) In this thread they used the Qualcomm tool and exploit the bug in EngineerMode on OnePlus phones which we don't have an access to and since we can't root or unlock the bootloader we can't modify build.prop or change any system files.
-----Maybe it's my carrier, maybe it's the Singapore ROM so please if VoLTE and VoWifi works for you could you post here which country you're on, which ROM version and if you changed region before or not.------
First a warning: If you aren't tech-savvy, experiencing issues or want to potentially turn your phone in a paper weight do NOT try this at the moment. We do not have the tool to restore your phone back (wiping data might work but idk). You can send your phone to Oppo for repair but you might have to wait for a month or two.
I don't know if you need to unlock your phone from the other thread to have access to this mode(I did have it all decrypted during this test) but in addition to the *#808# engineer mode and *#*#4636#*#*(Where you can check if you have VoLTE enabled) I found we have access to *#36446337#.
In *#36446337# I managed to enter "Protocol test switch" -> "MBN TEST" and switch my profile from Common-Commercial(I think it was this one) to Commercial-DT-VOLTE. The phone rebooted and everything is fine but "MBN Validate" is giving me an error when I run it and I can't test if it works because I'm currently out of the country and my temporary SIM provider doesn't support VoLTE.
It's probably nothing and the error is because of the lack of developer files on the ROM but I need people who can test if these profiles act like the flashing from the Qualcomm tool in the thread mentioned above.
So once again if you don't have VoLTE enabled and are feeling a bit courageous - give it a try.
Click to expand...
Click to collapse
I am in the same boat as you. I rebranded to Singapore to get ColorOS 11 update, to use 2 SIM and Call Recording, along with Theme Store, etc.
While on my previous phone (Xiaomi Mi9) I had VoLTE and VoWiFi and my carrier supports them and my SIM has that activated by my carrier, on Oppo Find X2 Pro it seems for them to work is needed special Modem Profile for the concrete carrier you use.
My Carrier is not listed at MBN Test Menu, I tried all the profiles available there, all Commercial ones and all Volte Branded ones and they are not giving me VoLTE and VoWiFi options available in Menu or VoLTE or VoWiFi functionality.
This method used to work on Xioami and Commercial EU Carriers profiles gave me the VoLTE and VoWiFi functionality with just Activity Shortcut access to this menu on Mi9 and simple dialer code to activate VoLTE and VoWiFi switch in Settings.
Oppo Find X2 Pro is not sold officially in my country and by all carriers here and that is why there is no Carrier Volte Profile for carriers from my country and thus it is not possible to activate VoLTE and VoWiFi with other Carrier Profile from MBN Test Menu.
Maybe if we find a way with a Dialer Code or some menu to activate the VoLTE and VoWiFi switch in Settings first this profiles from MBN Test menu will work...
I am out of ideas for now.
ytgbg said:
I am in the same boat as you. I rebranded to Singapore to get ColorOS 11 update, to use 2 SIM and Call Recording, along with Theme Store, etc.
While on my previous phone (Xiaomi Mi9) I had VoLTE and VoWiFi and my carrier supports them and my SIM has that activated by my carrier, on Oppo Find X2 Pro it seems for them to work is needed special Modem Profile for the concrete carrier you use.
My Carrier is not listed at MBN Test Menu, I tried all the profiles available there, all Commercial ones and all Volte Branded ones and they are not giving me VoLTE and VoWiFi options available in Menu or VoLTE or VoWiFi functionality.
This method used to work on Xioami and Commercial EU Carriers profiles gave me the VoLTE and VoWiFi functionality with just Activity Shortcut access to this menu on Mi9 and simple dialer code to activate VoLTE and VoWiFi switch in Settings.
Oppo Find X2 Pro is not sold officially in my country and by all carriers here and that is why there is no Carrier Volte Profile for carriers from my country and thus it is not possible to activate VoLTE and VoWiFi with other Carrier Profile from MBN Test Menu.
Maybe if we find a way with a Dialer Code or some menu to activate the VoLTE and VoWiFi switch in Settings first this profiles from MBN Test menu will work...
I am out of ideas for now.
Click to expand...
Click to collapse
I'm pretty sure they force disable most of this stuff with region profiles (/etc/oppoRegion* folders)
At this point I honestly care more about GDPR protection,VoLTE and removing tencent/heytap crap than call recording and theme store which I don't use anyway.
So my plan atm is to wait for Oppo to release android 11 .57 .ozips so that I can flash back to european firmware then I'll see if changing region to EUEX Dual-SIM works and it's limitations.
This method might help people on EU roms with VoLTE, and I'll test it myself in the future, but at least for now *#36446337# lets us adjust MTU, 4G bands and some other smaller network optimizations.
Okay I don't know where to post this but I found *#649010# and this is where it gets into the spooky territory. I never tried toggling any of the options but I think "Full-port switch" option lets us connect our phone to the qualcomm diagnose tool just like the OnePlus phones from the Carrier profiles thread. I'm just documenting this code here so we know we have an alternative to the OnePlus LogKit.apk option in our Oppo phones.
MeTheRebel said:
Okay I don't know where to post this but I found *#649010# and this is where it gets into the spooky territory. I never tried toggling any of the options but I think "Full-port switch" option lets us connect our phone to the qualcomm diagnose tool just like the OnePlus phones from the Carrier profiles thread. I'm just documenting this code here so we know we have an alternative to the OnePlus LogKit.apk option in our Oppo phones.
Click to expand...
Click to collapse
Interesting to find out what these options do.
For some reason, non of these codes work for me now after doing the region change a couple of times.
lukeaddison said:
Interesting to find out what these options do.
For some reason, non of these codes work for me now after doing the region change a couple of times.
Click to expand...
Click to collapse
We keep telling people - you gotta unlock every time you change region and even then the unlock lasts a fixed amount of time ex. 24 hours before it locks itself again
MeTheRebel said:
We keep telling people - you gotta unlock every time you change region and even then the unlock lasts a fixed amount of time ex. 24 hours before it locks itself again
Click to expand...
Click to collapse
Unfortunately, the tool no longer works for me to unlock, the codes don't work. I'm stuck.
lukeaddison said:
Unfortunately, the tool no longer works for me to unlock, the codes don't work. I'm stuck.
Click to expand...
Click to collapse
Works for me no issue. Try adding cloudflare dns to your setup, tether your phones connection to your pc while disabling your main connection and adding the number values from the original thread, fiddle with the loopback driver, disable firewall in windows or your router. Everyones connection and setup is different you just gotta find a way to make it work on yours.
Tl;dr it works you just got to tinker with it
ytgbg said:
I am in the same boat as you. I rebranded to Singapore to get ColorOS 11 update, to use 2 SIM and Call Recording, along with Theme Store, etc.
Click to expand...
Click to collapse
Did you have the call recording option right after you switched region? I changed to Singapore Ex right after I got the phone, didn't see that option. Then I upgraded to ColorOS11, still did not find that option.
Jennifer000 said:
Did you have the call recording option right after you switched region? I changed to Singapore Ex right after I got the phone, didn't see that option. Then I upgraded to ColorOS11, still did not find that option.
Click to expand...
Click to collapse
You have to give permissions to 'Recording' app, then open enable it in 'Call Settings'
Mitar00 said:
You have to give permissions to 'Recording' app, then open enable it in 'Call Settings'
Click to expand...
Click to collapse
Do you mean recorder App?
Already given all permission but still no call recording option, and the recorder only has cloud sync on its setting
Jennifer000 said:
Do you mean recorder App?
Already given all permission but still no call recording option, and the recorder only has cloud sync on its setting
View attachment 5480471View attachment 5480473
Click to expand...
Click to collapse
Look in your Oppo Dialer settings, should be there somewhere .
Mitar00 said:
Look in your Oppo Dialer settings, should be there somewhere .
Click to expand...
Click to collapse
No luck, but thanks anyway.
Hi, i have an exynos s21 and I want to turn on the built in call recorder feature (I live in Italy and it's not illegal in my State). I have read that you can enable it by flashing the Indonesian xui firmware but once done you can't go back and I don't want to risk losing other features that I use (such as Samsung Pay).
I have read in other forums that (at least with previous samsung phones) you can turn on the feature by doing a factory reset and then using a Thai sim to initialize it. In this way you can have call recording without losing your csc. Is this still true? Thanks in advance.
Has anyone enabled on other variants?
I've heard that for instance, the India variants can call&SMS.
I have all the '20\21\22 T-Mobile & Metro tablets from multiple brands. All except for two can receive SMS but nothing else. One of those (LG) lost SMS function after first software update, the other is their first 5G (Alcatel) with everything locked down- can't even view APN in Settings (returned for this and being slow performing).
Additionally, I have an Octamax tablet that can call&text- thru Lifeline\Pandemic free phone\internet programs, which uses T-Mo network.
1. All the APNs in all the tablets (including Octamax) & several phone lines are identical- either originally or I added a new one.
2. I've sideloaded the manufacturer & Google versions of Phone, Messaging, Contacts + their supporting files- but nothing advanced like into System partition, no rooting or recoveries. To no avail, have tried old & new file versions.
3. T-mobile supports tablets with calling & SMS functions like the 2019 S6 Lite- in fact offers a troubleshooting section. (I don't have this tablet, '22 version only sold here as WiFi version).
Any ideas? Even other models from somewhere else?
Thanx