He passed due to complications from diabetes at the age of 45. While Q Tip rightfully got more attention since he did the majority of the MC-ing, Phife was an important stylistic counterpoint and had a great flow. The band was hugely influential, making jazz a big part of their sound. They even got Ron Carter to play upright on one track.
A Tribe Called Quest's Phife Dawg Dead at 45
There's a video in this link from their performance last year on The Tonight Show with The Roots. Watch A Tribe Called Quest Reunite for 'Can I Kick It?' With the Roots
A Tribe Called Quest's Phife Dawg Dead at 45
There's a video in this link from their performance last year on The Tonight Show with The Roots. Watch A Tribe Called Quest Reunite for 'Can I Kick It?' With the Roots