Kinda. When you're creating an account, it asks for a number to verify that you're a real person and sends a text message containing a number to confirm it. Most of those people don't care after the account is created. On the model of Samsung that I have, I can change the number, as many times as I like, using a special keypad combination. For instance, I've created about three Google accounts off of one number. On account number four, the Goog says "That's it. No more." I enter the keypad combination for a new number. After the phone gets a new number, I used the new number to verify Google account number four, five and six. Ad infinitum.