So true and i agree with u
For now i wouldn't getting any older and cheaper than iPhone 7 especially if the iPhone itself is ONLY DUAL CORE (iPhone 4S and iPhone 6S are both DUAL CORE anyways) in which very risky so anything iPhone 6S and older will be dropped. Just like the iOS 8 which requires more core... but 6s shares the similarity of 4s like, its still dual core, not water resistant, lacks hevc encoding...