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).
Related
So I get LTE but as soon as I get on a call signal goes to H and I cant use data/apps while on the call. Am I using the wrong APN settings, or wrong radio maybe? Any settings help would be great, or if you can confirm also. Thanks.
Mine nexus 6 did same thing. I'm not sure that the data still work or not but everytime I on call I see LTE Icon change to H like you said
It's one of 2 things.
Either VoLTE is not turned on on your device
Or ATT does not support VoLTE in your area.
First one is fixable. Second one is not.
Sent from my MI 5 using Tapatalk
TheDriller said:
It's one of 2 things.
Either VoLTE is not turned on on your device
Or ATT does not support VoLTE in your area.
First one is fixable. Second one is not.
Sent from my MI 5 using Tapatalk
Click to expand...
Click to collapse
AT&T doesn't support VoLTE on any phones that aren't sold by them.
StykerB said:
AT&T doesn't support VoLTE on any phones that aren't sold by them.
Click to expand...
Click to collapse
Then that would explain that I would think
LTE is data only, so when u go on a voice call it will got to hsdpa or 3g bc that is voice and data, so it is normal
Bradl79 said:
LTE is data only, so when u go on a voice call it will got to hsdpa or 3g bc that is voice and data, so it is normal
Click to expand...
Click to collapse
Please don't spread information that's no longer the 100% truth. AT&T, Verizon, and (for a while now) T-Mobile offer calling over their LTE network, dubbed VoLTE (Voice over LTE). It allows voice packets to travel over the LTE network instead of legacy/3G and older networks.
The way the standard it set up, devices made more recently have software and hardware support for it, but as carriers have certification processes for their network, not all devices work cross-carrier. Most notably, iPhones (bleh) work cross-carrier because of the way their network configuration is provisioned (device identifies what network it's on, and downloads carrier configuration for that particular network). Some Android devices work cross-carrier (Nexus 6P and 5X), but the manufacturers of Android devices designing unlocked devices for some reason aren't certifying on AT&T, maybe because of cost or complexity.
Therefore, there are 3 main reasons VoLTE won't work on a device:
1) Not in a VoLTE area
2) VoLTE not enabled (this could encompass the option simply being disabled per the user)
3) VoLTE being restricted (AT&T restricting access because the device isn't certified, and/or the device not being capable)
Read up more on the requirements for AT&T (specifically) here:
http://att.com/hdvoice
balleron24z said:
Please don't spread information that's no longer the 100% truth. AT&T, Verizon, and (for a while now) T-Mobile offer calling over their LTE network, dubbed VoLTE (Voice over LTE). It allows voice packets to travel over the LTE network instead of legacy/3G and older networks.
The way the standard it set up, devices made more recently have software and hardware support for it, but as carriers have certification processes for their network, not all devices work cross-carrier. Most notably, iPhones (bleh) work cross-carrier because of the way their network configuration is provisioned (device identifies what network it's on, and downloads carrier configuration for that particular network). Some Android devices work cross-carrier (Nexus 6P and 5X), but the manufacturers of Android devices designing unlocked devices for some reason aren't certifying on AT&T, maybe because of cost or complexity.
Therefore, there are 3 main reasons VoLTE won't work on a device:
1) Not in a VoLTE area
2) VoLTE not enabled (this could encompass the option simply being disabled per the user)
3) VoLTE being restricted (AT&T restricting access because the device isn't certified, and/or the device not being capable)
Read up more on the requirements for AT&T (specifically) here:
http://att.com/hdvoice
Click to expand...
Click to collapse
So how do you enable on the OP3 with AT&T?
SysAdmNj said:
So how do you enable on the OP3 with AT&T?
Click to expand...
Click to collapse
You can't, only thing that would remotely make it work is if your imei was set up as a HDVoice supported phone in AT&T's system (s6, s7, note 5, note 7, iphone, etc). Though that likely won't work either since it'll try to provision the VoLTE and fail and yea.
AT&T does not use "Standard" VoLTE, so even if the phone supports it (like the OP3 does) and they were to allow the IMEI, it still wouldn't work. Phones have to have specific code from AT&T to do their HDVoice (according to their own customer service postings in their forums)
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.
Click to expand...
Click to collapse
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
I was finally able to get AT&T to get my VoLTE turned on. It took two chat sessions but finally I got them to turn it on.
VoWiFi... not so much. They wanted me to go in to a store, because the phone isn't an AT&T sold phone. The chat representative said they would do something to the phone to turn it on even if the VoWiFi switch is already turned on.
Side Note for VoLTE:
My suggestion is tell them you used the dial code "*#*#4636#*#*" and tell them you can see that the VoLTE isn't enabled. And if your phone isn't registering with the IMS info, let them know too.
Good Luck
Anyway here are the screen shots:
You sir are a saint, thank you so much for this helpful information.
That dial code doesn't do anything when I type it in for some reason.
I was able to get VoLTE on both mine and my wife's OP8 Pro by just having the phone agent register the IMEI and rebooting.
I have submitted a ticket with their advanced team for enabling 5G provisioning since we have the 5G bands (or at least one of them) for AT&T. I will follow up if I am successful.
yeah I came from the Note 10 5g on ATT and i didn`t have to do anything, I just put in my sim and turn on VOLTE and it just worked. but Vowifi is another story. lol, I`m going back to Tmobile in couple of months, at least they allow vowifi and 5g to work without the BS from ATT
Will be trying myself and will post if make any progress
I ended up with a MVNO provider Ultra Mobile as a 2nd line on SIM2 (need a 2nd line for work anyway). That gives me 5G+VoLTE+VoWiFi unlike AT&T.
really wish AT&T business practices change. It sucks that AT&T does their customer like that.
I have enabled Volte via PDC method, disabled overseas commercial and activated CU-LTE.
Everything works great.
Japan Rakuten/AU Mobile
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?
Click to expand...
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.
Hello there, im trying to activate vowifi, i can activate volte fine but not vowifi, anyone got it activated and if you did how did you do it.
Sent from my SHARK MBU-H0 using Tapatalk
Are you in the USA? If so, that is the reason. Xiaomi phones are not whitelisted for wifi calling by ANY carrier here and this is not expected to change soon.
I am presuming you used short codes to turn on Volte successfully. The Wowfi code works also (phone is wifi calling capable) but its carrier disabled.
I bought a paid plan from FreeUP, an ATT MVNO, where you can use an app dialer to make outgoing wifi calls (and free unlimited international calls) but still no incoming wifi calls.
Same pricing as Mint Mobile.
(Fyi, even if you weren't using a global phone the only Android phones guaranteed to get wifi calling here are the ones the carriers here sell ... There are a few exceptions ... The newer pixels and a few others.)