Okay would like advice on this. Could i get say a cheap sim card from the us.. say lycamobile for 1 dollar online. Then i activate my lycamobile sim on my iphone in the US to receive that sms number? But would i need a plan for it or not? I only need to do it for account verification.
You need a plan for SIM service. You
should be able to do that as long as you get the correct SIM card type and the correct voice+text plan. However, I've heard nothing but bad things about Lycamobile. They have an F rating with the Better Business Bureau.
You might consider buying a prepaid burner phone for a one-time verification.
But after this, would i still need this same phone number to log in everytime? Or could i use google authy or authy from later on and i no longer need the same sms number i used to activate it?
I'm pretty sure it's only for identity verification. After that, you can -- and should -- use a TOTP app for logins.
Because im out of the US most of the time, so the us number lycamobile won't work outside the US. Because with coinbase, i know a google voice number sms there are no issues. But gemini does not accept a voice over ip number. So how do you guys use gemini outside the US then?
Lycamobile does have plans with international roaming. I have no experience with that, though. I rarely leave the states.