Ummm, yes, they keep tabs on the number of phones that have been put on your line(s). Everything is documented, trust me, I know from first hand experience.do they even keep track of how many replacements you have had? i rememebr going in a few times with other phones and having them ask if i have ever had to replace the phone before...? so in theory coulnt you just say you have had to replace it a bunch of times?