Hi everyone, I'm a long-time lurker...this forum is why I got the Eris and now the Incredible! Only my second time to post but I have found all your info entertaining and/or informative so I was hoping someone could help me too! I currently have an Eris and my husband was up for his upgrade. I used his upgrade to purchase the Incredible online. Now, I want to switch my Eris to the Incredible. I see on the Verizon website where I can change the ESN of the phone number I use but I'm wondering if this will still allow me to use his upgrade or if it is going to charge my line with the difference between the cash price and the upgrade price. We are on the family share program. I hope this makes sense!