If you already have the ZTE pocket WiFi, go for the $500 plan. As I said, you can use your existing unit on Calyx. However, The Franklin R850 works just fine., just not as many bells and whistles.
At $500 that equals $41.66 / month. Subsequent years at $400 equals $33.33 / month. Calyx seems legit.
At $500 that equals $41.66 / month. Subsequent years at $400 equals $33.33 / month. Calyx seems legit.