Samsung Galaxy Note 4 review: The best Android phablet rules with a pen
Ultra HD display Although it's got the same 5.7-inch display as last year's model, the Note 4 has jumped in display resolution, from 1080p HD up to a 2,650 x 1,440p quad HD AMOLED display. Its pixel density of 515 ppi soars over the Note 3's 386 ppi and t...