From my perspective, the issue with selling a phone that is over-saturated versus one that is accurate is that in one case a company is just shipping something that meets the standard, and in another case they are making that subjective choice about what looks better for you.
With monitors and displays this isn't as big of a deal, as you can adjust it yourself to what you want, but with smartphones and tablets there are few or no adjustments available so if you receive a display that is purposely over-saturated, you are stuck with that. Perhaps it catches eyeballs in the store and gets you more sales, but it also means you are stuck with it. If a company isn't going to provide a way to adjust the display (such as including presets that are calibrated, vivid, and so on) then I'd prefer they just ship something that tries to conform to the standards that exist (sRGB or AdobeRGB in these cases).
With monitors and displays this isn't as big of a deal, as you can adjust it yourself to what you want, but with smartphones and tablets there are few or no adjustments available so if you receive a display that is purposely over-saturated, you are stuck with that. Perhaps it catches eyeballs in the store and gets you more sales, but it also means you are stuck with it. If a company isn't going to provide a way to adjust the display (such as including presets that are calibrated, vivid, and so on) then I'd prefer they just ship something that tries to conform to the standards that exist (sRGB or AdobeRGB in these cases).