There really isn't any warranty information in the manual. What did you need to know about the warranty?
The standard 1 year warranty that comes with the phone when you purchase it only covers manufacturer defect not due to physical damage or abuse. So basically it doesn't cover any physical cosmetic issues, cracked/damaged screens or buttons, or water damage, and of course it doesn't cover the phone if it's lost or stolen.
What else did you need to know?