Amazon.com: KuWFi 4G LTE Router with SIM Card Slot, Unlocked 4G WiFi Router with External Antennas, Industrial Wireless CPE Internet Routers for Home/Office, Work with AT&T and T-Mobile : Electronics
KuWFi 4G LTE Mobile WiFi Hotspot Unlocked Wireless Internet Router Devices with SIM Card Slot for Travel Support B2/B4/B5/B12/B17 Network Band for AT and T/T-Mobile (KF-L100US) - Newegg.com
Cat12 Cellular Modem American 4G LTE SIM Card Router WiFi
Unleash 5G Power: 5G OpenWRT SIM Router Compatible with AT&T, Verizon, and T-Mobile – Taktikalnetwork.com