I honestly don't know! My service provider is Consumer Cellular, I'm thinking it may very well fit a Galaxy J7 Crown, but I have no idea for sure.
If you have a Best Buy near your home, do check it out, the sales people are great and they'll be more than happy to assist you... If you're ordering online, I'm thinking the return policy with Best Buy is great, so if it doesn't fit, you can return it! Win-Win!!!