I know that people who spend more than $100 per line on their AT&T plan get updates every year. Our current family plan is as follows: 1. 700 minutes 2. Unlimited texting. 3. Fan 15% discount. Now my mom is the main line for right now and she has no extras. I am on an iPhone with unlimited data so my per line cost would be more were I the mainline. Can I move my number to the main line? Does unlimited texting for the family count as the mainlines cost? If you could help with any of these questions I would be very grateful. Thanks!