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Question T-Mobile - Visual Voicemail

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hadesflames

Member
Dec 23, 2011
19
35
OnePlus 9 Pro
So just right off the bat, I know that T-Mobile are assholes and they setup their voicemail to only work by calling in or using their ****ty proprietary app.

That said, I get a vague sense that there probably shouldn't be a lot stopping someone that has root access and maybe a custom rom from fixing the default visual voicemail feature included in the google phone app to get it working with T-Mobile anyway by figuring out what exactly it is the default app needs to do to make T-Mobile think it's their app that's connecting?

Wondering if anyone knows if that's something I could potentially look forward to in the future because quite frankly I hate calling in to get my voicemails and I hate their app. If I had to choose between one of those 2 options for voicemails and just straight up disabling voicemails all together for my line, I'd picking disabling voicemails.
 

notrock

Senior Member
Mar 14, 2008
212
5
Is this a new change? I have MetroPcs and visual voicemail was working on my 5T running android 9, then it stopped working when I switched to the 9 Pro.
 

netgar

Senior Member
Jan 14, 2012
992
106
OnePlus 9 Pro
Guys, have you tried that one?
 

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Samuel Holland

Senior Member
Jun 26, 2013
483
234
lake charles
One thing to consider is on Pixel Devices TMobile VVM works by default but I haven't seen it work on OnePlus yet, at least on the unlocked version like my 8 & 9 pro. Would be nice if someone could figure out the Pixels secret. Thanks
 
May 17, 2021
47
12
LineageOS
Not to beat a dead horse here but this is where I am at. I know T-mo will not provision VVM unless you use theirs. I am running an unlocked OP9 LE2125. When I got to settings and look at VVM in the google phone app, it has carrier blank and T-mo voicemail number greyed out. What I am currently attempting to do is look at the code and see if i can change that number. I currently got a google voice number and I know people do not want to use google voice, they are simply trying to use the VVM without using T-mo. I am trying to see if i can find at least a work around until Lineage OS for OP9 is released. I currently contacted T-mo to shut my voicemail off and I used the short code to stop forwarding calls to my voicemail. So far when people call my T mobile number google voice picks up if i let it ring or if i reject a call. Now i need to see how to get into the google phone app to update that greyed out number
 

entropism

Senior Member
Jul 21, 2007
1,686
356
Linden, NJ
OnePlus 7T
Google Pixel 4a 5G
Creative, that's not what people are looking to do. If you were using a Pixel (or a few other phones that use Google's Dialer as standard) the in-dialer VVM uses T-Mobile's (or whatever carrier you're using) voicemail service, it just runs everything through the dialer.

In addition, you don't need to have T-Mobile shut off voicemail to use Google Voice, you go into your call settings and just change the conditional call forwarding numbers to your google voice number.

And it's not about not wanting to use Google Voice. It's about getting the same functionality that every other carrier has without HAVING to use Google Voice.

Going to be honest here, you're making way more out of this than you need to.
 
May 17, 2021
47
12
LineageOS
Creative, that's not what people are looking to do. If you were using a Pixel (or a few other phones that use Google's Dialer as standard) the in-dialer VVM uses T-Mobile's (or whatever carrier you're using) voicemail service, it just runs everything through the dialer.

In addition, you don't need to have T-Mobile shut off voicemail to use Google Voice, you go into your call settings and just change the conditional call forwarding numbers to your google voice number.

And it's not about not wanting to use Google Voice. It's about getting the same functionality that every other carrier has without HAVING to use Google Voice.

Going to be honest here, you're making way more out of this than you need to.
I'm out of work for another month. Just trying to keep busy lol. That's all
 
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    So just right off the bat, I know that T-Mobile are assholes and they setup their voicemail to only work by calling in or using their ****ty proprietary app.

    That said, I get a vague sense that there probably shouldn't be a lot stopping someone that has root access and maybe a custom rom from fixing the default visual voicemail feature included in the google phone app to get it working with T-Mobile anyway by figuring out what exactly it is the default app needs to do to make T-Mobile think it's their app that's connecting?

    Wondering if anyone knows if that's something I could potentially look forward to in the future because quite frankly I hate calling in to get my voicemails and I hate their app. If I had to choose between one of those 2 options for voicemails and just straight up disabling voicemails all together for my line, I'd picking disabling voicemails.
    1
    VVM on T-Mobile hasn't worked for years unless you're specifically using their proprietary VVM app. It wasn't working for me on my last phone (Nokia 7.1) and it's not working right now either on my OP9Pro. It's pretty well documented too:

    https://www.reddit.com/r/tmobile/comments/cexhou
    It's not just me.
    1
    We're not looking for an alternative voicemail service. We're looking to use the in-dialer voicemail like every other device that has the Google dialer as the default.
    1
    Creative, that's not what people are looking to do. If you were using a Pixel (or a few other phones that use Google's Dialer as standard) the in-dialer VVM uses T-Mobile's (or whatever carrier you're using) voicemail service, it just runs everything through the dialer.

    In addition, you don't need to have T-Mobile shut off voicemail to use Google Voice, you go into your call settings and just change the conditional call forwarding numbers to your google voice number.

    And it's not about not wanting to use Google Voice. It's about getting the same functionality that every other carrier has without HAVING to use Google Voice.

    Going to be honest here, you're making way more out of this than you need to.
    I'm out of work for another month. Just trying to keep busy lol. That's all