The hurdle of moving everything to a new sim could be a hassle, but being locked out of services tied to your number and 2FA is pretty debilitating. Continuity is the main reason I use Fi
Moving what to a new SIM? Smartphones store contacts in the phone and cloud, not on the SIM card. If you’re going to live overseas and need a US number get a phone that supports dual SIM cards.
Most of the newer iPhones support either two nano SIMs or built-in eSIM plus physical SIM. Takes a few seconds to set it up.
TOTP 2FA (Authy, Google Auth, etc.) does not need cell or internet, it’s time-based. SMS 2FA is harder to accommodate, for that I suggest a US number with Twilio that you can forward to any number in the world.
