How do you change the time that the back light that goes out on the Motorola Razr phone. I looked in the manual that came with the phone but I still couldn't find it. I looked under personalize too. I changed the back light option in my phone (Samsung Gravity 2) but couldn't find it for my mom's phone! I figured it would be under the personalize section under her manual, just light it was for mine. If anyone could help, it would greatly be appreciated! Thanks! 