Anyone been through the process of switching phones using Tello + T-Mobile SIM, from an iPhone 6S using T-Mobile SIM, to an iPhone 7?
I see that, after logging into my Tello account, I can go to My Phone \ Want to replace your phone? \ Bring a new phone, and enter the replacement phone's IMEI/ESN, then click CHANGE DEVICE.
Is that all I have to do? Need a new SIM? Any caveats I should be aware?