How do different mobile carriers not set up new customers with the same phone number?

Question

How does a new T-Mobile customer and Verizon customer not get the same number? Do companies share the same number generator? How can Apple systems tell a number doesn’t come from apple messager?

In: 6

Answer 1

T-Mobile and Verizon do not share the same number generator. Each company assigns numbers to their customers independently. Apple systems can tell a number doesn’t come from Apple Messenger by checking the number against a database of valid Apple Messenger numbers. If the number does not match an entry in the database, the system will recognize that it is not an Apple Messenger number.