How can I find out what network my samsung galaxy note 4 is locked to

[Android Central Question]

I recently bought the off of kijiji and I have tried a few different sim cards and none work. I have tried looking in the setting s for the network provider but it says it's unknown and the mobile network state is disconnected. I need help please.

 

[hallux]

What is the exact model code in About this phone in settings? That can be used to find out what carrier it may have been branded for.

 

[tadpoles]

I apologize for the above garbaage, my S10+ like to come on and do random things in my pocket. Apparently, it's a known issue.

 

[B. Diddy]

(I deleted the unintentional posts.)