Flashing a "hot" (ready-to-use) FTF file is the most reliable way to clear a forgotten lock when you cannot access the settings menu.
If the device asks for a Google account after flashing, you are facing the FRP lock. e6833 lock remove ftf hot
Removing a screen lock or Google Factory Reset Protection (FRP) on the Sony Xperia Z5 Premium Dual (E6833) Flashing a "hot" (ready-to-use) FTF file is the
If you still have access to the Google account, you can use Google Find My Device to remotely wipe the phone, which sometimes resolves credential loops. e6833 lock remove ftf hot
model. XperiaBlog often hosts repository links for these files.