So I assume this is due to the Simlock.
Now I wanted to ask if it is enough to go to any Phoneshop to get an unlockcode for my carrier and afterwards it will be possible to unlock bootloader via S1tool/SE?
Or do I have to use a service like Wotan Server?
If so, can you please explain which service exactly I have to use or what it will cost?
Thx a lot in advance