I'm asking that because I have a second phone that I bought on Fizz solely for WiFi otw, but I don't see anything about the possibility of adding a plan to it.. Is there a way?
Replied to your previous post here
Repeating it here as well.
If you want to create a separate (new) account, then the answer is no. It's not possible to buy a phone from Fizz without a phone plan.
If you want to buy a new phone from the existing account (and add the phone plan to it later) then the answer is yes.
BTW it will be more profitable to create a separate account (with a new email address) by using your referral code from the existing account. In this case you will receive 25$ for your 1st account and 25$ for your 2nd account (after second payment).
This is the guide how to add an additional phone number to the existing account: