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For screen lock issues (forgotten PIN/Pattern), the Xperia Companion software can perform a "Software Repair" to reset the device, though this erases all data .

For network/SIM locks, the most reliable and legal way is to contact your original service provider . Most carriers will provide an unlock code for free if the device is paid off. For screen lock issues (forgotten PIN/Pattern), the Xperia

Many sites claiming a "100% working online free unlock" are often clickbait or host malware . Legitimate unlocking usually requires specific hardware drivers and, frequently, paid server credits for newer models. Official & Safe Alternatives Many sites claiming a "100% working online free

If you are a technician, tools like UnlockTool are widely used in the industry but require a paid subscription and specialized knowledge to avoid bricking the device. Comparison of Methods Carrier Request SIM/Network Unlocking Sony Developer Portal Bootloader Unlocking (Devs) Xperia Companion Forgotten Screen Locks (Data Loss) S1Tool / SETool Unofficial Legacy/Technical Repairs For screen lock issues (forgotten PIN/Pattern)

Sony provides a dedicated Bootloader Unlock service for developers. You can check eligibility by dialing *#*#7378423#*#* and navigating to Service info > Configuration > Rooting Status .

If you are looking to unlock your Sony device, it is highly recommended to use official or verified professional methods: