[lkbm]

I've always figured I should have two numbers—one I let people know, and one for 2fa.

But that's ~$20/mo and a moderate annoyance, so for now mostly just fingers crossed that eventually everywhere that matters will allow me to switch fully to authentication apps and hardware keys.

[jswrenn]

I don't think that having two numbers will help much. I'd guess that most sim-swapped cell numbers are leaked in data breaches or acquired through data brokering. Enrolling a number in 2fa is letting people know your number, because you're tying that number to the account.

A separate number for each account might help. Maybe.

[BenjiWiebe]

I'm getting a cell phone plan just for 2FA. It's actually a Tmobile MVNO, we'll see how it goes.

$2.50/month, RedPocket annual eBay plan.

[jareklupinski]

if you have an apple watch, depending on your plan, it may have a different phone number

wonder if that works...

[SkyMarshal]

Can also do that with iPads. I have an iPhone and iPad both on the same T-mobile account but with different numbers.