I have an unlocked Samsung Galaxy S21 (not + or Ultra) with Google Fi as
the current carrier (eSim). While it is listed on the phone model
compatibility list, the IMEI fails the lookup. I found this on Visible:
Your phone has to be carrier unlocked t...
I used customer service chat. Phone model is compatible. IMEI lookup is
not ready for prime time. Luckily, with current bring your own phone
rebates of $500/phone, regular Verizon ended up being cheaper than
Visible and their IMEI lookup worked fine.