Why my unlocked S9 plus and Note 8 are incompatible with boost?
I bought my Unlocked devices from best buy 1 in Aug 2018 and other 2 in Nov 2017. I recently went to nearest boost mobile store to add 4 lines for 120 usd but, they said my devices are incompatible with boost mobile and they have no clue why and they can't do anything. So how do I add 4 boost line? Please help me and thanks for your concern and time.