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call forwarding issue

  1. C1559913702531 Cupcake Jun 7, 2019

    C1559913702531, Jun 7, 2019 :
    call forwarding issue // trying to set up call forwarding on my OnePlus 7 Pro but getting an error : call settings error. network or sim card error. Done with some troubleshooting steps like rebooting the device, removing/inserting back the simcard, reset app prefererence, manual network search and wipe cache partition but none of them work
     

    #1
    TheGlissando likes this.
  2. TheGlissando Donut Jun 15, 2019

    TheGlissando, Jun 15, 2019 :
    C1559913702531

    call forwarding issue // trying to set up call forwarding on my OnePlus 7 Pro but getting an error : call settings error. network or sim card error. Done with some troubleshooting steps like rebooting the device, removing/inserting back the simcard, reset app prefererence, manual network search and wipe cache partition but none of them work



    I have the same issue with my GM1910 12GB/256GB; however, I am using dual sims. T-Mobile (Voice) -1, Verizon (Data) - 2.

    I AM able to access call forwarding settings on SIM 1 T-Mobile if I switch the data over to the SIM 2 Verizon. It's so weird.

    If I remove the Verizon SIM, I am unable to access the T-Mobile Call Forwarding settings via Android's Call Settings menu like you.

    I have a second line with T-Mobile, and tested it's SIM in the phone only. I get the same result. However in the other phone I use the SIM in, I am able to set call forwarding settings via Android's Call Settings menu.


    Who is your carrier? I'm with T-Mobile for voice, I spent about 20 minutes on the phone with them just so I could have my number forwarded. Also using USSD codes does not work for me. I get an Invalid MMI message back. This is an inconvenience.

    Hopefully OnePlus sees this and can bring forward a solution for this.
     
    Last edited: Jun 17, 2019

    #2
  3. psinferno Cupcake Jun 18, 2019

    psinferno, Jun 18, 2019 :
    This is really annoying, it doesn't work with my phone (oneplus 7 pro).
    And I searched the internet and a lot of people are having problems with that (but only with Oneplus devices).
    With my iphone it is absolutely no problem (same sim) and with the Oneplus it doesn't work.
    I can't set in the settings (something about a network or sim error) and also an error in the dialer with the mmi codes.
    I really need that forwarding.
     

    #3
    TheGlissando likes this.
  4. TheGlissando Donut Jun 22, 2019

    TheGlissando, Jun 22, 2019 :
    Hello, I wanted to share an update. The call forwarding issue I reported in this thread on my GM1910 12GB/256GB is now resolved.

    I can access and manage call forwarding from Android's Call Settings menu independent of which sim I am using for data.

    Not sure what has changed, as I didn't do anything... I'm just glad it's working!
     

    #4