I have a question about the "bring your own phone" with new line offers I'm seeing - I've seen one for up to $540 off over 36 months with a new line, and another for a free Unlimited Welcome line when you BYOD.
If I activate a new line with a new phone number to start the promotion, can I later change that number and still keep my 36 months of promotional credits? Can I later port a number from another carrier to replace that new number?
Thanks.