S6 EDGE Plus Models (G928I or G928L)?

I need a bit of clarification for the model number G928, the letter following the number would it be listed with a lower case number or a capital? I am currently in cambodia and i am interested in buying the Plus but i'm unsure if the complete model number is G928i or G928L, being that capital i looks like a lower case L.

also what is the difference between the G928(i) versus the G928(L)? Does the main letter/number combo G928 determine that it's an international unlocked phone? Thanks in advance.