I decided to go ahead and download the carrier update 19.1 on my iPhone 6. Now I'm having trouble with getting my voicemail and making calls. I was really surprised by this because I usually have this problems making and receiving calls at work outside my work building but I'm having trouble now. And I only so use to didn't have problems making and receiving calls in the basement and being heard by the caller on the other end but I'm having these problems now. Is there any why to uninstall 19.1. Any tips are suggestions? Thank you