Today, Lenovo has announced the Vibe Z2 Pro as its new flagship device heading forward. It is going to be big, literally. The Vibe Z2 Pro has a gigantic 6-inch display with 2560×1440 resolution (Quad HD). This gives it 490 pixels per inch. The back of the Vibe Z2 Pro is just as impressive as the front since Lenovo opted to cover it with metal.