I just upgrade from 6 to 6s. Before upgrading, I backed up my 6 via iTunes -- I transferred purchases and everything. After coming home with the 6s, I connected the phone to iTunes and restored from the back I made previously. It restores my contacts, wallpaper, texts, music -- but not my Apps or home screen layout. I only have the stock Apps installed. How do I restore my Apps and home screen layout from the iTunes back up?