Will Jailbreaking Get Me into Legal Trouble?
Not in the United States. Some countries have laws against jailbreaking, but it isn’t exactly a common rule. However, jailbreaking will completely void your Apple warranty. That means Apple is no longer obligated to offer you any services or repairs if they find your phone is jailbroken. A.K.A, they will drop you like a very hot potato.
This, of course, makes it difficult to repair any of the problems that might develop as a consequence of jailbreaking. It also means you’ll probably have to buy a brand new iPhone before Apple will do anything for you again.