Actually that's not common knowledge, and you're preaching to the biased choir here @ MacRumorsThat really doesn’t make much sense in terms of how consumers think though. It’s common knowledge that iPhones have a very strong resale value over android phones, and that’s not to knock Samsung devices. But the reality is, it is due to the sheer popularity of the iPhone.
I mean, simple research will show you a three year old iPhone compared to a new-ish Samsung phone, the values are very similar. So what does that tell you?
The value of any mobile device goes down significantly after 3 years of raw age, so the only thing you can do is look at 3-year-old devices from today, not from 10 years ago. Historical references are meaningless, because we're not selling to the past. And if you compare resell costs of Samsung devices for today's market vs Apple resale prices, they are comparable. I can get ~500-700 for last year's Samsung AND Apple. I can get ~200 for 3 year old Samsung and Apple. So what does that tell you?
This isn't a better-than/worse-than argument, just a point that Apple doesn't universally hold a "very strong resale value over Android phones" ... they both enjoy a good resale value, period. Android phones may be all over the place, and given that this is a Samsung thread, in regards to Samsung, I'd say they're comparable.
If you think I'm making an exception out of your rule, understand that Android holds a significantly larger market share than IOS, and out of that slice, Samsung phones hold about as much (if not more) market share in the total mobile market as Apple does. So they should be compared equivalently, not against the other Android devices fighting for the top position.