What happens if you have two phones with the same number?
As stated above, it's impossible to get two phones with the same phone line. Even if someone signs up with a different carrier, the company will forward the new number to a new phone and cancel the activation on the old one, making only one number active at any one point in time.
Can two phone numbers be linked together?
Through the Google voice app, users can combine multiple phone numbers into a single phone number. All users need to do is to set up a Google voice number account via their desktops or mobile devices. After an account is registered, users can immediately begin texting and calling from any of their existing devices.
Can I have two phones with the same number AT&T?
No. All ATT numbers require a SIM card.