Attempting to add three lines to a New-Contract phone purchase for our family of four, a warning came up that the chosen "group plan" is limited to three lines, even though the plan-page Conditional $250 Discount explanation states "**Purchase limit of five (5) devices per household.**" This was on the 700 minute plan, so we chose the 1400 minute plan--same limit of three total lines per plan. Called ATT, they explained that this limit is for our calling area (?!?) and imposed on Amazon deals only, and that (of course) the limit is five phones when you order from ATT direct. This is the price for phone deals on Amazon, it seems.Next question--can you purchase the three-line plan and, once it is activated, add a line? There is no answer that I found.Next question--can a previous phone numbers be transferred to phones in the new ATT plan purchased through Amazon? As stated in previous reviews, this information is never collected in the process of purchasing the plan & phones. We called Amazon customer service (which was quick in getting a live person on the line), they explained to wait until phones arrive and follow instructions given there. Then on the very opening page for the primary phone we were looking at, I found the link How to Transfer Your Phone Number under the Requirements section. So it seems you can now transfer phone numbers, contrary to reviews that state that you could not in 2007 before Cingular was bought out by ATT.So, do I dare, don't I dare? I did buy the 700 minute plan with 3 phones, but have not tried to add the fourth line yet.