Start with Method 2 (OTG + Test DPC) . It is the most reliable free method for the Sony Xperia L3 in 2024. If you don't have an OTG cable, buy one—they cost less than $5. If that fails, you have no choice but to use a paid service or take the phone to a local repair shop (which will use those paid tools and charge you $30-$50).
The software will reinstall the firmware, which in some cases can clear the persistent lock if the device is verified through your computer. 2. Manual Bypass via TalkBack/Settings Menu sony xperia l3 frp bypass