I actually found a solution for this. This works for me with the Kyocera DURAXV. I downloaded the Verizon message plus app on my iPhone and activated the app with my flip phone number. There is a option on the Verizon message app to receive calls and make calls with the app number. Once activated Now when ever i receive a call on my flip phone it rings my iPhone as well. I get messages on the iPhone as well. In addition its pretty easy to call out of the iPhone with this flip phone number as it integrates into the native Apple dialer. The only downside is that when you send messages from the iPhone it doesn’t come up on the flip phone and vice versa as well. Otherwise this is a decent solution if you would like to leave your iPhone at work and have a life at home. On android though I don’t know if this will work.
" The only downside is that when you send messages from the iPhone it doesn’t come up on the flip phone and vice versa as well. "
IME both with a Cadence and with a Duramax, the iPhone has all the messages including what was sent from the flip phone. However the flip-phone does not pull up the outgoing messages sent by the iPhone.
Also regarding calling, you only need to have Data in order to set up the Calling Feature in the Message Plus app. However once activated you don't need the iPhone to have active service and it will work over wifi.
