Hey there @Edna1. Nice to see you around!!! 😄
At this point, I was not able to see the Samsung Galaxy Core Prime in the list of compatible devices but I can recommend that if you'll be buying it, you can ask the sales person if there is a phone you can use just to try and see if the Fitbit app is compatible or not. Sometimes, some devices are compatible because of their software/hardware capabilities but are not officially in the list of compatible devices or if you know someone that has the phone already, you can also download the app on their phones just to try it out.
Let me know if you have more questions.
Ferdin | Community Moderator,
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