When I need to input a phone number on reputable and secure sites, I usually use my real number. However, for identity verification on lesser-known international platforms, I opt for a one-time phone number. There are ample methods for authentication that don't involve your personal number. For this purpose, I find temporary phone numbers incredibly useful. One site I recommend for obtaining these is https://temp-number.com, where you can access a variety of numbers from different countries, ensuring your identity verification is perceived as authentic. I've personally used this approach to regain access to my bank cards while abroad, highlighting its reliability and practicality. This method was introduced to me by a friend who is in the mobile app development field.