Enhanced 4G LTE Mode - Xiaomi Mi A3 Guides, News, & Discussion

Did this on my AT&T sim.
In dialing app,
VoLTE *#*#86583#*#*
VoWIFI *#*#869434#*#*
Network Settings, Enhanced 4G LTE Mode, enable it.

This USSD code just disables/enables VoLTE capability check. It may help if your carrier "does not support" VoLTE for Mi A3 while the device is capable. But you need to be careful. Mi A3 (at least International ROM) uses some generic carrier profile. And this profile uses SMS over IMS. And you will need an IMS APN for sending SMS.
If your carrier does not support SMS over IMS (still uses LTE signalling for sending SMS) you can try setting active another carrier profile with QPST Flash Tool if your device rooted.

qwertysmerty said:
This USSD code just disables/enables VoLTE capability check. It may help if your carrier "does not support" VoLTE for Mi A3 while the device is capable. But you need to be careful. Mi A3 (at least International ROM) uses some generic carrier profile. And this profile uses SMS over IMS. And you will need an IMS APN for sending SMS.
If your carrier does not support SMS over IMS (still uses LTE signalling for sending SMS) you can try setting active another carrier profile with QPST Flash Tool if your device rooted.
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I was thinking (for USA users) this would be good to enable when AT&T, T-Mobile, Sprint and Verizon enable RCS next year.
My MVNO on AT&T doesn't support VoLTE/VoWiFi. My IMS Status: registered and UT Interface is available.
Am I barking up the wrong tree?

i tried this on my MiA3 with Havoc OS and PE, not work. On Mi9 and MI9 Lite work

Related

How to enable VoLTE on Pixel?

Hi guys.
Let me elaborate my question.
1. I am totally aware that VoLTE on Android at the moment generally requires the handset to be from the carrier, or from the same region as the carrier for it to have the correct VoLTE (and VoWIFI) settings.
2. I am also totally aware that since Android 6.0, there actually has been a provision to allow carriers to send carrier settings to the user. I also know that this isnt being widely used.
After my ownership of my Pixel XL, I moved to a HTC U11, which I have flashed a custom ROM. This custom ROM managed to have the carrier settings for VoLTE for my carrier baked in.
I am keen on getting a Pixel XL2, so Im keen to see what the Pixel community is doing to enable VoLTE on networks that arent stocking the Pixel or Pixel XL.
Here in Australia, both generations of the pixel seem like they will be Telstra exclusives. and I am not inclined to go on their network!
Thanks for any assistance!
I use it with T-Mobile, only Verizon stocks it in the States. Volte works fine for me. Nothing i needed to do other than to setup the phone with the Sim card in the device.
Same here, got it with my T-Mobile SIM card.
This worked for me. Go to dialer and dial
*#*#4636#*#*
Phone Information
Turn on VoLTE
Turn on Video Calling
Turn on Wi-Fi Calling
Exit
I'm on Oreo 8.1 on my P2 XL, looks like it's already enabled. I'm on AT&T.
View attachment 4317129
Change carrier. AFAIK you'll never get enhanced LTE services using a non-AT&T branded phone on their network. Once I switched my pixel xl to T-Mobile things like that and wifi calling worked fine.
My condolences to your Pixel XL 2. I was in a Verizon store the other day just to check out PXL2. The blue tint when turning the phone horizontally - horrific. Also, barely faster than my Pixel XL, even if you care for that kind of thing (speed.)
CHANGiism said:
This worked for me. Go to dialer and dial
*#*#4636#*#*
Phone Information
Turn on VoLTE
Turn on Video Calling
Turn on Wi-Fi Calling
Exit
Click to expand...
Click to collapse
Same problem in Argentina, Pixel is NOT SOLD here so.... out of luck, but I tried this (already knew of the menu) and all my options are blacked out -can't enable any of them-, advice?????
Thanks.
If you can get root on your phone, flash magisk and there is a module in there to install that can enable VoLte and Wifi calling, worked for me on AT&T.
loeffler23 said:
If you can get root on your phone, flash magisk and there is a module in there to install that can enable VoLte and Wifi calling, worked for me on AT&T.
Click to expand...
Click to collapse
I need to try this when I get home. I get nowhere with ATT
LubbocksFall said:
I need to try this when I get home. I get nowhere with ATT
Click to expand...
Click to collapse
the module only changes the settings to allow for toggling but does not provide needed ims libraries.
CHANGiism said:
This worked for me. Go to dialer and dial
*#*#4636#*#*
Phone Information
Turn on VoLTE
Turn on Video Calling
Turn on Wi-Fi Calling
Exit
Click to expand...
Click to collapse
I had to toggle VoLTE off then on, restart. It's working for me now
"Turn on Video Calling"
Option is disabled, couldn't turn on
Depends if you're on Verizon or straight talk or what. I'm on straight talk and they don't offer VOLTE even though they use Verizon towers.
Using *#*#4636#*#*, the VoLTE provisioned option is greyd out. Anyone has a solution for this?
HSOC said:
Using *#*#4636#*#*, the VoLTE provisioned option is greyd out. Anyone has a solution for this?
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Click to collapse
It means your operator is not offering VoLTE, or, as in my case, Pixel XL is not approved by the operator. I have VoLTE on my SIM enabled and working with operator approved devices but network rejects Pixel as not compatible one.
ylapas said:
It means your operator is not offering VoLTE, or, as in my case, Pixel XL is not approved by the operator. I have VoLTE on my SIM enabled and working with operator approved devices but network rejects Pixel as not compatible one.
Click to expand...
Click to collapse
Operator offers VoLTE and it doesn't filter IMEI like in some cases. Other not approved devices (e.g xiaomi, oneplus) managed to enable volte via shortcuts. I am asking for a similar workaround. --thanks
Of you're on Straight Talk you're SOL. They don't offer it even if you're using a Verizon SIM
If you had geryed provisioning options you need to use magisks voenabler. a did it right now on december pie update. Now I have all enabled. Just waiting for operator to enable volte for my number. I wonder it will active.
Hi, my carrier does support VoLTE but the Pixel is not on its whitelist.
When dialing *#*#4636#*#* and going into phone info, the switches for "VoLTE Provisioned" is off and greyed out, but at the top of this screen I see "Voice Network Type: LTE". Does that mean I am getting VoLTE? I cannot see any other sign or symbol when calling. (I know some devices have a VoLTE symbol either in the status bar or during a call)

Enable VoLTE Redmi Note 8T Stock MIUI 11 with TMobile USA

Purchased a Redmi Note 8T phone to replace my mother's aging LG feature phone, specifically due to TMobile USA dropping support for phones without VoLTE in January 2021. Followed the steps to disable the carrier check *#*#86583#*#* and confirmed that VoLTE option shows enabled on *#*#4636#*#* menu. Also confirmed I'm getting LTE signal and data. In the SIM settings it shows VoLTE enabled but no icon next to signal indicator and doesn't say HD when making calls. IMS status says Not Registered. Any suggestions? Is this because the phone has been on the TMobile network for only a couple hours? Or because TMobile still thinks she's using the LG feature phone which definitely wasn't VoLTE capable?
jwhite5840 said:
Purchased a Redmi Note 8T phone to replace my mother's aging LG feature phone, specifically due to TMobile USA dropping support for phones without VoLTE in January 2021. Followed the steps to disable the carrier check *#*#86583#*#* and confirmed that VoLTE option shows enabled on *#*#4636#*#* menu. Also confirmed I'm getting LTE signal and data. In the SIM settings it shows VoLTE enabled but no icon next to signal indicator and doesn't say HD when making calls. IMS status says Not Registered. Any suggestions? Is this because the phone has been on the TMobile network for only a couple hours? Or because TMobile still thinks she's using the LG feature phone which definitely wasn't VoLTE capable?
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Click to collapse
After much testing and process of elimination we have basically determined that either it's not possible on the US T-Mobile network, or that getting it to work is far beyond my technical capabilities.

Wifi calling greyed out (sprint to t-mobile)

Can anyone please explain the steps to enable wifi calling feature? i can toggle volte on/off but not wi-fi calling.
this was a sprint phone now on tmobile prepaid network.
Sprints firmware in conjunction with T-Mobile being T-Mobile does not permit both WiFi calling (or VOWiFi) or VoLTE (voice over 4g/lte).
T-Mobile made it known they will not permit support for this device and as of their plans for 2021, they plan to shut down 2g and 3g networks. Theoretically you'd have to upgrade your phone to a 5g T-Mobile certified phone. As per the merger with sprint, only select sprint based devices will be patched to work on T-Mobile (galaxy s20 ultra) being one of them.
To summarize, it won't work because sprint locked it and T-Mobile won't permit it. Gotta love the "un-carrier" for letting you "bring your own device". T-Mobile is more to blame. They don't want to support it. Hopefully we get a full root with a custom rom up that permits volte or VOWiFI otherwise this phone might be dead by 2021q1. Probably why it's <$300 on eBay right now.
i read some were able to get service codes to access hidden menu to update apn and mms settings by deleting sprint settings. would that fix all the issues?
toodyloo said:
i read some were able to get service codes to access hidden menu to update apn and mms settings by deleting sprint settings. would that fix all the issues?
Click to expand...
Click to collapse
No that can't fix volte and vowifi

VoLTE & VoWifi on Telstra in Australia

I managed to successfully change the carrier policies on my OnePlus to enable VoWifi and VoLTE in Australia using the guide here: https://forum.xda-developers.com/t/volte-vowifi-and-5g-in-aus.4284047/#post-85119383
My colleague has a Xiaomi Mi 10T Pro - is there a similar set of instructions available to enable VoWifi and VoLTE on that phone in Australia?
In NZ I had success using these Phone codes that turned on VoLTE for me (no VoWIFI for my network). These seem to be standard codes for Xiaomi worldwide that enable support if the underlying software recognises your network's version.
To turn on VoLTE: open your phone app and dial *#*#86583#*#* and you'll see a quick toast message saying it's turned on. Type the code again to turn it off.
To turn on VoWifi: open your phone app and dial *#*#869434#*#*
To check settings *#*#INFO#*#*
Also look under the SIM card settings. If you've enabled either properly there should be a menu item saying "Use VoLTE" and similar.
Once enabled for me it took a few minutes for VoLTE to register. I rebooted, but don't think that was necessary. Now I make VoLTE calls (4G stays in place during the call) and I have a VoLTE icon in the status bar.

General For USA Users: I am getting wifi calling on an AT&T MVNO using the Note 9T

I thought I should mention that without rooting or any other hacks besides disabling carrier checking for Volte and VOwifi by entering the usual codes, I am actually getting wifi calling on FreeUP, an AT&T MVNO. Which probably means ATT and all its MVNOs get wifi calling on this model.
So far as I knew until now, ATT blacklists phones that it doesn't sell from using this particular calling feature. ( apart from iphones and Pixels bought directly from Google, because both of those manufacturers refused to let AT&T sell their phones otherwise).
I couldn't do wifi calling on any of my other Xiaomi phones (Mi Max 3, a Mi Max 2 and a Redmi Note 5 Whyred, all rooted), although I could get Volte to work using the shortcode for it. But wifi calling was supposedly blocked from the carrier's end and couldn't be enabled.
I expected to get the usual "no network" message when I tested wifi calling on the Note 9t by turning on airplane mode, then turning on wifi, but it just put the calls through.
(you could always get T-Mobile wifi calling to work on some Xiaomi phones, but TMO sometimes other had incompatibilities).
fyi, the codes, in case anyone reading this is new to Xiaomi:
Code to enable Volte: Dial * # * # 86583 # * # * using the default dialer -- the message has to say volte carrier check disabled for Volte to be enabled.
Code for Wifi calling: *#*#869434#*#* -- the message says says vowifi carrier check disabled for wifi calling to be enabled.
(but check the settings after using the codes because sometimes you still have to toggle them both on)
PS: This model is a pretty decent option for US buyers on a strict budget, as is the Poco M3 Pro.
The next step up if you need North American bands is the Mi 11 lite (about $100 more) and the Poco F3 ($150 more).

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