Sim Unlock

  1. Issamo
    Cupcake Aug 21, 2020

    Issamo , Aug 21, 2020 :
    I have T-Mobile OnePlus 7 Pro for almost 14 months ( with a Texas Number), I'm in Canada and I'm always roaming with Telus network. T-Mobile wont unlock my phone for another 10 months.
    I have already flashed my OnePlus with International Firmware successfully, I also bought a dual sim card tray to use both Networks (T-Mobile and a local network) at the same time so people don't have to call a long distance to reach me; I can see 2 sim card however the second SIM card is greyed out.
    What do I need to do next to reach my goal?

  2. Artemus.
    Nougat Aug 21, 2020

    Artemus. , Aug 21, 2020 :
    Ah, I see your problem right away: carrier-branded OP devices do not support dual SIM despite it being unlocked. Only the factory-unlocked/international variants do.

  3. W1598995769084
    Cupcake Sep 10, 2020

  4. C1600674753083
    Cupcake Sep 21, 2020

    C1600674753083 , Sep 21, 2020 :
    hola buenas tengo un one plus 7t t mobile
    compre un codigo de libercion
    cuando lo pongo lo hacepta y dice
    maximun unlock attempts exceeded
    metroe podrian ayudar porfavor

  5. W1598995769084
    Cupcake Oct 13, 2020

    W1598995769084 , Oct 13, 2020 :
    haw can ido that please can You help me

  6. pm_mazur
    Froyo Oct 16, 2020

    pm_mazur , via OnePlus 7 Pro , Oct 16, 2020 :
    No. I have two tmobile devices that I've flashed to international versions and both sim cards in each device work flawlessly, including roaming T-mobile in Europe and a prepaid sim card at once.

    You absolutely need the bootloader unlocked from developer options menu.

    If T-mobile didn't unlock your device, and you have it flash or not, you are still gonna be stuck with T-mobile until they can unlock it.
    Bare in mind that you WILL HAVE TO flash it back to tmobile firmware in order to get it unlocked.

    I suggest to pay off the device asap. Call T-mobile after and tell them that you've paid it off and you had it longer than 3 months. They'll unlock it for ya.

    They do make special circumstances as well. I had my devices unlocked the same week after I purchased them outright... Even though they told me I have to wait 3 months. Sweet talk them via T-mobile App.

    I1605107685127 likes this.