The 819, specifically the C819HG-LTE-MNA-K9, supports dual SIM failover between two carriers. This model supports both ATT & Verizon.
However, the cellular modem firmware available on Cisco's support site for the MC7354 comes in different flavors for different carriers.
For example: 5.5.58.x modem firmware for Verizon using MC7354MNA modems in Cisco LTE-MNA SKU ONLY (Multicarrier North America). MC7354MNA_1102407_05.05.58.01_00_VZW_005.005_000-2kMTU.spk
If I want to failover between ATT and Verizon which modem firmware do I need? Or does it matter?
Thank you,
Stephen
