Oofus Hiding your caller ID, whether it be via phone settings or *67, will not work on any toll-free phone number. So they have your real number and can get a general idea of where you live, never call scammers using your real phone number, ever. While I don’t know of that many good VoIP services for iPhones, one you may want to try is textPLUS. However, if you have access to a computer, I highly recommend you use FireRTC, TextNow or Google Voice, all these applications are free or offer a free variant and will provide many more options than most no cost phone apps. Let me know if you have any other questions.