In my Weingard 2.0, the Weingard ConnecT 2.0, the sim card that came with the unit supported ATT and a Weingard Plan. I ordered a sim card from Verizon. The sim install was easy, but required a firmware upgrade and a climb up on the roof of the RV to install it.
If your Sprint Cell phone supports WiFi calling, you can connect the phone to the Weingard wifi access point and it will enable you to send / receive calls over what-ever internet connection the Weingard 2.0 is using - e.g. campground Wifi or Verizon.
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