Why does phone manufacturers make more than fhd screen?

Phone screens are smaller, but are apparently more HD than a full, widescreen TV. Why? The pixels are small but they can fit in just that little screen space, but is harder to fit onto a relatively gigantic TV screen.

Social networking sites d. online forumsthe first recognizable social media site,  six  degrees, was created in 1997. it enabled users to upload a profile and make friends with other users. in 1999, the first blogging sites became popular, creating a social media sensation that's still popular today.