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I got the phone unlocked at a local mobile phone dealer for € 20. This worked. Generally I'd say it is interesting how this network SIM lock comes from, because my phone never has been locked or branded by a provider. The stock firmware worked with different providers. The problem only appeared for the custom ROMs. And be aware when changing your SIM card! ...


The System Version of the device is usually unique to a carrier, due to the changes carriers make to the stock software in most countries. You can find that value in Settings > About Device > System Version and plug it into Google.


Try this... Link to LT26i firmware You might have flashed different firmware that's the issue or Your phone might be factory locked... Try the solution in the link provided... :-)


You could try putting another SIM card in your phone and see if it works, if it doesn't, it's locked.

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