Hello anyone!

My Bluetooth exchange works fine for sending files and it can connect with and browse my phone fine except many of the files on my phone don't appear on my MacBook when I'm browsing? Any photos I take on the phone cannot be seen, but other images from other phones, and downloading etc do appear. Also the voice clips aren't seen.
I have a Samsung Genio Touch.
Is there any file format that the MacBook can't support, so cannot see on the phone as a result?

Thanks for any help or advice you can give me.