2FA is a royal pain in the arse when you don't have your phone. In August my WIleyFox Spark X had decided to stop working reliably (wouldn't answer phone calls, wouldn't ring when calls were placed, restarts etc). In a bid to show the phone who's boss, after it died one too many times, I threw it in the River Moy - forgetting I was throwing my SIM card away with it.
Didn't need the phone, really, for 2 weeks after that (as I was on holiday). But when I got back to work I forgot my work email account had 2FA on it, and there was I waiting for a replacement SIM card to arrive.