Companies Can’t Legally Void the Warranty for Jailbreaking or Rooting Your Phone

The short answer is yes, it does: Under the Magnuson-Moss Warranty Act of 1975, manufacturers cannot legally void your hardware warranty simply because you altered the software of an electronic device. In order to void the warranty without violating federal law, the manufacturer must prove that the modifications you made directly led to a hardware malfunction. – Jason Koebler, MOTHERBOARD