I've started tracking my internet traffic. My 4G LTE Verizon Network Extender downloads a lot of data in any 24 hour period. Today, for example, it has downloaded about 500 MB of data. One day it downloaded over 3 GB of data. Why should the network extender need to download that much data? I would seem that most of its activity would be uploaded data when a connected cell phone is being used. I should mention that the download occurs even when the phones are not being used.