Chosen Solution

I just purchased a logic board but how do I know it will work for my phone? it didnt ask how many gigs I needed and what phone carrier I have ect.

Ask for the imei and check it on iphoneimei.info

Never good to buy logic boards without knowing any info on them(IMEI, storage, carrier, etc) Most thorough way to test will be to get the board in an existing chassis with parts installed. But like @imedic stated it’s probably Apple locked ):