Sony Xperia Z4 Compact, Z4 Ultra spotted in certification list
The alleged successors of Sony Xperia Z3 Compact (D5800 series) and Xperia Z Ultra (C6800 series) were spotted in an Indonesian Telecom regulatory list. Based on the certification dates, the Xperia Z4 Compact and Xperia Z4 Ultra are expected to debut in the near future.
Sony E5803 model number corresponds with the successor of the Z3 Compact D5803 and will likely be dubbed Xperia Z4 Compact. Similarly, E6683 and E6883 model numbers could be the follow up to the Xperia Z Ultra C6683/C6803.