iQOO reportedly teased the upcoming iQOO Z11 smartphone in China during its seventh anniversary event. The handset is confirmed to feature a 165Hz gaming display and a 9,020mAh battery, the largest ever used in an iQOO phone. The device has also appeared on certification sites, suggesting an imminent launch. Leaks indicate it may sport a 6.83-inch 1.5K display, suppor…