call forwarding from business number to personal iphone

I cannot find an answer to this!! I understand HOW to set call forwarding up, but my question is will I know if the call is a forwarded call? I want to have my business phone number on a cheap flip phone I don't use and just always have it forwarded to my personal phone so I don't have to carry two phones around at my other job etc... BUT, I want to be able to know when it is a business call because I answer the phone differently when it is a business call vs. personal call.

[If it makes a difference, I have Cricket now for my personal iphone, and was looking at a phone through Page Plus (linked to verizon) with minimal monthly minutes/cost to use for my business phone. But I won't do this idea if it won't work!] Or, is there a better way to do this? HELP!!