Lenovo PB1-770N With 6.8-inch Display And 3,500 mAh Battery Crosses China's TENAA A massive Lenovo PB1-770N phablet with a 6.8-inch display has been revealed by TENAA, suggesting an imminent debut. The listing shows off most specifications, including an octa-core processor and a 3,500-mAh battery. by Alexandra Burlacu