Main Logic Motherboard Board with IC Flash Light Proximity Sensor Memory Card SIM Card Tray Fix Replacement Repair Parts for Samsung Galaxy Note 4 N910P Sprint N910V Verizon

this said it replaced a sprint motherboard. it should work on sprint service. I can't get it to read the sprint sim card. everything else works great. what do I need to do to get it to work with the sprint service. right now I am not happy at all and would rate 1 star. I can't even get ahold of you. if you help me fix this I will give you a 5 star.