1
Dual sim Dual VOLTE support not available on One plus 8T via OnePlus 5

  1. Z1603348037917
    Cupcake Nov 25, 2020

    Z1603348037917 , via OnePlus 5 , Nov 25, 2020 :
    List of phones that support Dual SIM Dual VoLTE in India in 2020

    Back in 2018, only selected phones used to support Dual SIM Dual VoLTE feature but now in 2020, almost all the phones launched in India comes with Dual SIM Dual VoLTE support.


    2. OnePlus Phones

    OnePlus started adding dual SIM dual VoLTE support to its phones with OnePlus 6. So, OnePlus 5T and a few older OnePlus phones support 4G on both slots but not dual SIM dual VoLTE.

    Notice the S line that reflects through the midnight black variant

    OnePlus 8 Pro – Review | Specs

    OnePlus 8 – Specs

    OnePlus 7 Pro – Review with pros and cons | Specs

    OnePlus 7 – Review with pros and cons | Specs

    OnePlus 6 – Review with pros and cons | Specs

    OnePlus 6T – Review with pros and cons | Specs




    Why One Plus 8T handset do not support Dual SIM Dual VOLTE feature been a latest handset launch in one plus kitty..?
     

    #1
    Gats likes this.
  2. Gats
    Froyo Nov 26, 2020


    #2
    zainiesta and hojsimpson952 like this.
  3. Balphanso , via OnePlus 8T Lunar Silver , Nov 27, 2020 :
    I get the Dual VoLTE symbol for both my phone. Check your sim settings, if they have changed to 2/3G. Also, good to check if the network does have VoLTE all the time . Maybe it does.
    FYI - I am from India
     

    #3
  4. Z1603348037917
    Cupcake Nov 28, 2020

    Z1603348037917 , via OnePlus 5 , Nov 28, 2020 :
    Can you share your screen shot of your home screen with both sim volte network active at the same time.
     

    #4

  5. #5
  6. Balphanso , via OnePlus 8T Lunar Silver , Nov 28, 2020 :
    1606606449656.jpg
    Here you go... Hope this helps...
    This is pretty much what I see all day, barring occasions where I was in a bad network area, where I didn't get any network on either SIM.
     
    Last edited: Nov 29, 2020

    #6
    Z1603348037917 likes this.
  7. Balphanso , via OnePlus 8T Lunar Silver , Nov 28, 2020 :
    Two reasons why this can't be done through a software update in silo by OnePlus:
    1. Not all chipset and/ or modem combination support Dual VoLTE. Older chipset would support only one SIM on VoLTE. So, OnePlus will be limited with software support. From what I checked on Google, I guess Qualcomm 845 was the first 'flagship' chipset to support Dual VoLTE, but I maybe wrong on the timeline
    2. Additionally, the network also has to 'enable' the phone on it's network, along with the mobile manufacturer.
    I had seen this when I worked with Jio (One of the Indian Telecom companies, for context) just before launch. My iPhone 6s, though VoLTE could be enabled, before launch it wasn't so. I had to get to a VoLTE Android phone to use the office SIM, or use the iPhone as an expensive data dongle.
     
    Last edited: Nov 29, 2020

    #7
  8. A.Saketh Gupta , via OnePlus 8T Aquamarine Green , Nov 29, 2020 :
    May be Your SIM is Old. Go to nearest Sim Centre Update the SIM into 4G . Then except VI Sim all of the new Sim gets VoLTE . For VI Sim after Purchasing and Activating the Sim Mesaage to 12345 as ACTVOLTE . Then after 24 Hrs your Sim will be In VoLTE . At last Please Turn ON VoLTE Setting on Your Device
     

    #8

  9. #9
  10. Gats
    Froyo Jan 2, 2021

    Gats , via OnePlus 8T , Jan 2, 2021 :
    Settings > Wifi & Network > Sim & Network > Sim 1 Under Enhanced Connections Turn On VOLTE and now goto Sim 2 do the same as Sim 1
     

    #10
  11. zainiesta , via OnePlus 8T Aquamarine Green , Jan 2, 2021 :
    I cannot find where is volte on this section.. I have do step by step that u show to me.... 🥺
    1609616912497.jpg
    1609616912523.jpg
     
    Last edited: Jan 3, 2021

    #11
  12. PritishPriyam
    Honeycomb Jan 3, 2021


    #12
  13. zainiesta
    Cupcake Jan 5, 2021

    zainiesta , Jan 5, 2021 :
    Check this guy on youtube...
    he guide to enablling volte on oneplus 8 serie...and works for my 8T.


     

    #13