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Not supporting VoLTE for Vi sim via OnePlus 7T

  1. DrDedication
    Eclair May 12, 2021

    DrDedication , via OnePlus 7T , May 12, 2021 :
    Before updating to Android 11, device was showing dual VoLTE(Vi + Airtel).
    But after updating its only showing Airtel VoLTE and no Vi VoLTE.
    After this new updates many things got hampered. This is one of them.
     

    #1
  2. Yash Pratap Singh.
    Lollipop May 12, 2021

    Yash Pratap Singh. , May 12, 2021 :
    Settings -> Mobile networks -> Turn on VoLTE call
     

    #2
    the_o2 likes this.
  3. DrDedication
    Eclair May 14, 2021


    #4

  4. #5
  5. DrDedication
    Eclair May 14, 2021


    #6
  6. BeingIncog
    Nougat May 14, 2021

    BeingIncog , May 14, 2021 :
    did you change something from *#*#4636#*#*?
    if not reset the networks...
     

    #8
  7. DrDedication
    Eclair May 14, 2021

    DrDedication , via OnePlus 7T , May 14, 2021 :
    Yes, there is dual 4G ,both sim VoLTE activated but showing VoLTE only for airtel not Vi
     

    #9
  8. DrDedication
    Eclair May 14, 2021


    #10
  9. BeingIncog
    Nougat May 14, 2021

    BeingIncog , May 14, 2021 :
    which recharge did you do, also which circle? contact vi cc...
     

    #11
  10. DrDedication
    Eclair May 14, 2021

    DrDedication , via OnePlus 7T , May 14, 2021 :
    I did contact them. In Cuttack Vi VoLTE is supported. They have also activated my VoLTE.
     

    #12

  11. #13
  12. BeingIncog
    Nougat May 14, 2021

    BeingIncog , May 14, 2021 :
    do this ... upload_2021-5-14_20-42-20.png then turn on and off airplane mode and check...
     

    #14
  13. DrDedication
    Eclair May 14, 2021


    #15
  14. DrDedication
    Eclair May 14, 2021

    DrDedication , via OnePlus 7T , May 14, 2021 :
    I have tried but issue doesn't resolve.
    Tried the sim in other device and it showed VoLTE. So definitely the problem is with the device. This issue started after I updated to android 11. And before that it was functioning properly.
     

    #16
  15. Gurudev_Reddy_Marthala_ , via OnePlus 7T Glacier Blue , May 14, 2021 :
    Rollback to 10 bro
     

    #17
  16. DrDedication
    Eclair May 14, 2021


    #18
  17. E1601398784788
    Cupcake May 23, 2021

    E1601398784788 , May 23, 2021 :
    I am facing same issue.
    After latest update i.e. oxygen Os 11.0.1.1 HD01AA, my VI simcard stopped working. It is not showing any range.
    I used same sim from another phone, it is working fine. I interchanged sim slots, other sim card is working in same slot, but VI sim is not working with other slot also.
     

    #19
  18. T1572261401933
    Gingerbread May 23, 2021

    T1572261401933 , via OnePlus 7T , May 23, 2021 :
    Suggest to update the latest release for india OS 11.0.1.1.HD65AA for 7T. It is having 4G communication improvement in change log.
    There is chance to fix the issue.
    For better result, adviced to backup your data, proceed for one time hard reset.
     

    #20