Are you both on Zv5 or Zv6 or which version? I am looking into this issue.... I am going to try to replicate your issue then see what's causing it, give me a couple hours to do some tests. Also are you both on Sprint?
---------- Post added at 03:36 PM ---------- Previous post was at 03:33 PM ----------
- If you go into settings, then general, then system updates and update prl or update profile, does either do anything?? Have you pulled the battery, held Volume up and while holding vol up pressed power until you are in hard reset mode and reset it this way and had it go through setup again, including activation?