Before attempting any lock removal, gather the following:
SIM/network unlock
The Sony Xperia E5 (F3311) is an older device that typically runs Android 6.0 (Marshmallow). Removing a lock screen—whether it's a pattern, PIN, or Google account lock (FRP)—is usually done through official Sony tools or third-party flashing software like Methods to Remove Screen Lock (Pattern/PIN)
In such cases, a lock remove file can be a lifesaver, helping you regain access to your device without losing any data.