If the above methods don't work, you can try performing a factory reset on your SONY Xperia S LT26i:
The SONY Xperia S LT26i is a resilient classic, but its lock screen security is a relic of a simpler time. With patience and the right tools, you will bypass that forgotten pattern and breathe new life into your device.
: On a computer or another smartphone, visit the Google Find My Device website.