It's on the list atm but the Note 9 use to be too so it can change at anytime.
Hi there, @JunaidChaudry! Thank you for stopping by. Unfortunately, not all unlocked phones are compatible with our service. You can check if the unlocked phone you want to activate is compatible here: https://activate.boostmobile.com/bring-your-phone?intnav=TopNav:Phones:BringYourPhone.