Having bluetooth issues on my S4

I have been having what would seem like a hardware issue with my S4, where the bluetooth connection is spotty and drops in and out frequently. It happens on all different bluetooth connections, and i want to say it's hardware bc if i leave the phone alone it is usually better and doesn't toggle in and out, when i pick the phone up and move it around it cuts out much more.

is there any way to fix this? i have no idea how to swap out the bluetooth hardware or if that's basically built into the MB.


thanks for looking