My first thunderbolt i had was find until i install the update . I waited us mush as possible to get a refurb but after my 5 factory reset i had it . They sent me a refurb one and as soon i open the box i sent it back . The packaging was terrible all they did was to put the phone inside the box with out protecting it or securing it inside the box. The second one i sent back because it wasn't rebooting it was shutting off . That's when i talked to a tech supervisor and i told her an ear full. So they told me they were sending me a new phone not a refurb one. So if you decide to get a refub one be careful inspected good