My Galaxy S5 call waiting drops all calls, how can I stop this?

[AC Question]

Galaxy S5 call waiting drops all calls

I have a Galaxy S5 and recently installed the lollipop update. Not sure if that is what is causing this issue or not since I can't be sure if it didn't begin immediately, but I now have a situation that when I am on a call and another call comes in (call waiting), both calls drop without me touching a button or accepting the incoming call. VERY annoying and difficult with clients.

 

[Whitey34]

I was able to get this resolved by wiping the phone. Inconvenient, but worked.

 

[cheina99]

I'm having the same problem? Did you find a permanent fix?

 

[ng1012]

Anyone get the fix for a rooted phone?I don't want to wipe my phone