Click on the firmware build string listed under the operator panel and hit .

Understanding Sony Xperia X (SOV33) Lock Removal The Sony Xperia X (model SOV33, originally released for the Japanese carrier au by KDDI) can sometimes become inaccessible due to a forgotten lock screen PIN, pattern, password, or a post-reset Factory Reset Protection (FRP) lock.

Use the "Find My Device" website to erase the phone remotely.