Which number to choose
Accounts verified once are fine with a one-time number.
For accounts you'll log into again or verify on new devices, use a rental number. Choose 7, 30 or 90 days and see every SMS in your dashboard.
When several people share it
One panelhi account shows all numbers and codes together. When someone new takes over, nobody needs to hand over a personal phone.
A separate number per account means a problem with one doesn't touch the others.
Good to know
Finance and payment services may ask for ID as well, so a number alone may not open the account.
Following each service's rules is the account owner's responsibility.