Please guide me how to use samsung pay un my phone, as it is showing it is not supported on your phone, i live in UAE

I have samsung A32 4G, doea this phone support memory card of 1TB, please guide 

Hi I am very stress these days, because i have purchased my my samsung A32 mobile from Pakistan, and now i am living in Dubai, i need to use samsung wallet for payments, but when i try to instal this application it shows this application is not avail...