So here's a question regarding the value of iPhone when kept on the original firmware and your personal take on this issue. (Original firmware meaning iPhone 5 on iOS 6, iPhone 6 on iOS 8, etc). As most of us know, newer versions of iOS tend to slow down older devices. That, coupled with the inability to downgrade, has led to an interesting market of selling iPhones on specific firmware versions. Take iOS 6 for example. It's a sought-out version of iOS for its speed and design, especially when it's paired with its most powerful device: the iPhone 5. Because of this, the iPhone 5 with iOS 6 has a noticeably higher resale value on eBay than any other iPhone 5. This makes me wonder: from a customer's perspective, are we better off never updating past our iPhone's original iOS? By not updating, our device configuration become rarer by the second, right? Wouldn't that, along with the desire to use a specific version of iOS on its most powerful device, help better maintain the resale value of our iPhone? But then again, this requires a sacrifice to the customer. He or she would never be able to experience any new compelling iOS features and would have to remain vulnerable to security exploits for the duration of ownership. Other points to consider: Are the final revisions of iOS versions more valuable? (8.4.1 vs 8.0) Is the iOS version's ability to be jailbroken more important? (9.1 vs 9.3) I would definitely appreciate your observations/opinions on this matter.