Just a week after 15-year-old Ruby Rubio got an iPhone and promised her mother she'd treat the prized possession with care, a mugger snatched it from the girl while she was walking her 7-year-old sister home from school. The teen from Santa Ana, Calif., gave chase and managed to jump on top of the trunk of the getaway car, a gray or silver Pontiac that had been waiting nearby, and hold on to the antenna, reports KCAL9. But when the car swerved she was thrown off and hit her head. She suffered severe head trauma and died at the hospital two days later, on Saturday.