Re: What is evasion jailbreak?
Simply Jailbreaking your device does not void the warranty...Apple even says this within their response, a few years ago, when the legality of JB'ing was defined.
Originally Posted by nikkisharif
Apple's Official Response To DMCA Jailbreak Exemption: It Voids Your Warranty | Cult of Mac
...Apple basically says "It CAN void your warranty", and this is where it becomes a grey area...simply JB'ing your device really doesn't do anything to the device except open it to modification. Where your warranty comes into play is the tweaks and customizations a person would do AFTER jailbreaking. This is where the warranty can be voided because people can really delve deep into the system, far enough to where the device itself can develop some hard to fix issues.
Jailbreaking, on it's own, can be reversed with zero evidence of the action left over, so even Apple knows that JB'ing is essentially a perfectly safe activity...it's what people do afterwards that they worry about, and can deny service/warranty replacement over. The real problem a person faces with trying to get service on a JB'ed iDevice is the assumption that a person who JB'ed their device also customized it...so Apple can, in fact, deny you service even if you only JB'ed it but never did anything else, because they can simply say "How do we know that?" THIS is why a person who isn't familiar with JB'ing shouldn't do it until they research it a bit more, that way they understand that if you ever need service, you are going to have to undo the jailbreak completely before hand.