1) iBooks says all of my ebooks need updating, yet seizes on my iPads and iPhone when I try to update them. (And I do mean ALL of my ebooks) 2) Hanging up calls, sometimes the screen looks like it's at half brightness, and I can't hit the hangup button. 3) At times it seems to just 'checkout' and not respond. 4) TouchID doesn't work anymore. This is a 128GB 6+.