this is a bit off topic, but I thought I'd share the regex to validate phone numbers since verification was mentioned:
^(\\+\\d{1,2}\\s)?\\(?\\d{3}\\)?[\\s.-]?\\d{3}[\\s.-]?\\d{4}$
if you're using Retool DB (postgresql/sql) you can implement the verification in the database itself instead of on the front-end. the benefit here being that the front-end no longer has to handle invalid data both when reading and writing (otherwise if you have more than 1 phone number input you have to remember to validate it for every instance.... so if a bug appears, you would have to remember to fix it everywhere you use the phone input)