How do I transfer ringtones from one cell phone to another?

I have a ringtone that I purchased, then I got a new phone. The ringtone is on my old phone and I can’t figure out how to get it onto the new phone. I have bluetooth only on the new phone and I don’t think I can transfer it to my SIM card. Is there another way to get my coolest ever ringtone onto my new cell? Please help!