I hate to tell you this, but iPhone or not, your info is available for anyone to access.  The SS7 vulnerability has been open for a long time.  All someone needs is your phone number and they can listen to your calls, read your texts, see where you are, who your contacts are and read your emails.  60 minutes had someone hack a congresswoman's phone just by her phone number (they bought her a new phone to test this), and never actually having access to the phone.  So if you are on a thousand dollar iPhone or a 30 dollar hunk of junk from a grocery store, you have the same vulnerability. https://www.wired.com/2017/05/fix-ss7-two-factor-authentication-bank-accounts/ . https://www.cbsnews.com/news/60-minutes-hacking-your-phone/