Hi All, I have a iOS 9.3.2 iPhone 6s Plus non jailbroken and everything works just perfect like the day I got it. I am inclined to upgrade to the iPhone 10 but the current phone is working just as fast as day one? Wasn't there a battery slowdown problem etc. I was hoping to justify my upgrade. Can I jailbreak this device? Will the Jb be non-tethered?