Default Dropping calls and BT since Kit Kat update

I537 on NE3 (6/6/2014) Re-issue of Kit Kat and I'm dropping calls in areas where there's low reception but I was able to hold the call before. Also, my BT headset works fine, stays connected until the actual call is placed, then BT is dropped. I need to turn off my BT headset then turn back on.