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I upgraded the wrong line, I'm not sure what to do
I upgraded the wrong phone line and I am not sure if there is anything I can do to fix this. I meant to upgrade a new phone for my youngest daughter but accidentally upgraded another phone line. Is ...
You can convert her physical SIM to an ESIM through your my.t-mobile.com account. A store could also help you get that done.
People swap SIM cards between lines frequently to take advantage of upgrade promotions. The lines are tied to the SIM and not the phone. Since you have an eSIM, I would contact TMO support at 611 and ask them how this is done. If the other phone you want to swap is also an iPhone, you can probably get better support from Apple directly on how to swap SIMs.
