High resale value seems like it would correlate most strongly with high initial cost and high popularity - more people would prefer to buy a used one if the initial cost is higher since they can't afford the initial cost, so both increase the demand. Android/Blackberry popularity is spread over many more models than the iPhone, and are usually cheaper.
"We firmly believe", on the other hand, is not an indicator of anything. "We've defined quality in such a way that" would be more apt - quality is a hard-to-define term, and they don't even try.
"We firmly believe", on the other hand, is not an indicator of anything. "We've defined quality in such a way that" would be more apt - quality is a hard-to-define term, and they don't even try.