How to unlock phone network

[FreddyKruger]

Does anyone know how to unlock the network of a carrier phone. Just bought an imported Samsung J5 Pro and the network signals don't come up when i insert my simcard. 

[Samsung_specialist]

Hey there,

Please visit the nearest service center with the phone to be checked by our  team.

www.samsung.com/ae/support/servicelocation/.

Thank you