Last week i replaced the screen and digitizer and it worked flawlessly until the phone updated. Now i get a "no network available at this time" message when placing a call BUT all other features work. Data in 4G lte and so on is perfect. Replaced sim, factory reset, phone with tech support for over 30 minutes but still scratching our heads at the end. Has there recently been a Qualcomm firmware upgrade for CDMA? And is 4.4.2 the current Android/Verizon os update?