Samsung Galaxy S5 - Dropping Calls

[AC Question]

I seem to have a problem with dropped calls. It ends the calls around 4 hours. I've tried disabling settings but nothing seems to fix it. I have Sprint but I've never had this issue before.

 

[B. Diddy]

Welcome to Android Central! Do you mean that you're making a 4 hour call? Have you spoken with Sprint support about this?