[Q] Verizon Note 4 with At&t sim topic

I just recently got a hold of a nice like new Note 4 and would like to start using it as my personal phone. The only issue I have is that I can't get data when I swap my atnt sim in, I don't know what else I can try. I am not familiar with android devices and I am not comfortable with messing with roms/unlocks/jailbreaks so I don't know what i'm doing. I have tried serching on google and on other sites but I have not been able to find a definite answer to my issue. Most other threads are old or have not been answered. What can I try to get data on my Note 4. I believe it is unlocked because I can call and text without issues but no data, I have tried chaning APN settings that I found on google but to no avail.
My Note 4 model is SM-N910V on android 4.4.4. The current phone I have is a 5s on AT&T and I used a sim adapter to get it to work on the Note 4. Maybe I need to call atnt and talk to them, please let me know if anyone has the same issue or is trying to do the same thing as me.