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No VoLTE option in OnePlus 8T via OnePlus 8T Lunar Silver

  1. MehrabKhan1459 , via OnePlus 8T Lunar Silver , Jun 27, 2021 :
    I don't see a VoLTE option for my 4G sim. I'm from Bangladesh. I use Grameenphone. but in "Wifi and Network" then "Sim and Network" snd then in "Sim 1" there is no enhancement settings. no volte or voWifi option. how do I bring them?

    Anyone facing the same issue? please help
     

    #1
  2. pablofg1978
    Head Moderator Head Moderator Jun 27, 2021

    pablofg1978 , Jun 27, 2021 :
    Volte and vowifi will only be there is your sim card supports it for your carrier. Contact Grameenphone support and ask them if the Oneplus 8t is supported for those services
     

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  3. MehrabKhan1459 , via OnePlus 8T Lunar Silver , Jun 27, 2021 :
    you mean even if the sim is volte supported, it has to support at this phone specifically?
     

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  4. pablofg1978
    Head Moderator Head Moderator Jun 28, 2021

    pablofg1978 , Jun 28, 2021 :
    Yes, your carrier needs to certificate each device model to be able to use volte
     

    #4
    batkenobi likes this.
  5. MehrabKhan1459 , via OnePlus 8T Lunar Silver , Jun 28, 2021 :
    I contacted Grameenphone support. they said oneplus hasn't released patch for grameenphone. thanks bro
     

    #5
  6. pablofg1978
    Head Moderator Head Moderator Jun 28, 2021

    pablofg1978 , Jun 28, 2021 :
    Like I said, it has to be certified by your carrier, the certification cost money and most carriers do not want to pay for a device that they do not sell
     

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  7. ShinobuKochou
    Gingerbread Jun 28, 2021


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  11. AussieAndy
    Donut Jul 1, 2021

    AussieAndy , Jul 1, 2021 :
    Been through this nightmare.

    To save time, just go to XDA forums and look up no volte/vowifi OnePlus 8T. There is a work around but too long to write here. Also when you finally get it working you have to redo the process each update.

    Good luck!
     

    #11