I've had my Note 3 since release, and it wasn't until KitKat that my phone "mysteriously" started dropping calls left and right. I've done everything that has been recommended: factory reset, new sim card, etc... Months have gone by since the update, hundreds of topics made, and Verizon just sits there with their thumbs where the sun doesn't shine. The coverage issues cause by the update are UNACCEPTABLE! DO SOMETHING ABOUT IT!
I'm going to let T-Mobile buy out my contract pretty soon since the only reason I'm with Verizon is the better coverage that I'm not even getting anymore.