This morning 02/03/15, I performed the carrier update 18.1 on my iPhone 5S running iOS 8.1.2. After the carrier update, my phone is having trouble connecting to the Verizon network either using 3G and LTE. I've reset both the iPhone and Network Settings multiple times. After reset, data works for maybe a minute or so, but the same problem comes back.
It seems other users are also having the same issue after the recent carrier update. Will there be a fix sent out soon?