[0] Network 0

[gmkhan]

How Can I make my Xperia working with a Network Sim? What to do further while having this staus (see image).

[_alexdon_]

It is locked and no unlock tries left.You cannot.

[mvyg21]

I'm having the same problem any advice? Should I go to the center who can open line my xperia m?

[_alexdon_]

I do not think anyone will be able to unlock your device.But visit a sony service:

http://www.sonymobile.com/global-en/support/contact-us/