As I understand it the Cosy+ 4GNA supports any ATT/T-Mobile compatible networks. However the product page says it does not support ATT along with Verizon.
Can you please confirm?
The product page probably needs to be updated because the Cosy+ hasn’t yet been certified on the AT&T network. There is no Verizon compatibility though.
We are currently in the process of certification, and it should be completed shortly.