Hotspot and unlocked phones

[Android Central Question]

I was looking to get a factory unlocked phone. Oneplus or note 8 or maybe something else. Not sure yet what I want. I currently have a LG v10 on AT&T network. I unlocked the phone to use on metro pcs for now. I can not hotspot with it unless I root it from what I have seen online. Might try it one day but what I want to know if I bought a factory unlocked phone can I hotspot out of the box? I have a plan with hotspot.