Do smartphones really need a 1080p or 2K resolution?

Mobile phones are devices which you use in communicating other people by sending a text message or receiving calls from different people. Right now, mobile phone have evolved, it now has a camera, a powerful hardware, nice GUI, and more. Manufacturers are in a fierce battle in the field of smartphones. There are now manufacturers that built  a smartphone with 1080p. Some of the manufacturers says that they are going to build a phone with 2K display and that is rumored for the Samsung Galaxy S5.

If you compare this phones to Nokia 3310, they are still related. They are still phones. So if you want a phone with 1080p or 2K display if you want to watch videos, just buy an UHDTV or HDTV and a DVD. You can have a better experience with it in your living room. If you want a phone with a 1080p or 2K display if you want to play games, just buy a UHDTV or HDTV and a PS3 or PS4. You'll enjoy your games using those. I'm not saying that a phone sucks because it has a good display, but for me it will just be stupid to have it for a phone. This is just my opinion. No hard feelings.

What's you opinion about smartphones with 1080p or 2K resolution?
Just comment below! Thanks!