Recently, the Library of Congress’s Copyright Office ruled that phones, like the iPhone, can be legally jailbroken. Today, Apple issued a formal response to the decision.
“Apple’s goal has always been to insure that our customers have a great experience with their iPhone and we know that jailbreaking can severely degrade the experience,” Apple said in a statement. “As we’ve said before, the vast majority of customers do not jailbreak their iPhones as this can violate the warranty and can cause the iPhone to become unstable and not work reliably.”
The company noted that jailbreaking an iPhone may leave it vulnerable to security issues. They also noted that modification of the iOS is a violation of the iPhone end-user license agreement, meaning that Apple can and will deny service on such devices.
Source: PC Magazine