All in all, these are great Wi-Fi hotspots. I've used 3 of these with the same model before with no problems. The specific number I received this time (IMEI: 013324007348559) was not suitable for use on the AT&T network due to its history, according to AT&T. It came with an unlock code, but AT&T said this particular device just didn't fit.
π Unlocked Huawei E397u-53 USB 4G LTE Modem - Exclusively for T-Mobile US, Worldwide Hotspot Service Required
6 Review
π Nommi: Unlocked 4G LTE Mobile Hotspot with Wi-Fi Extender, VPN, Pay-as-You-Go Portable MiFi, eSIM/SIM in 150 Countries, and 10000mAh Power Bank
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Verizon Wireless Jetpack 4G LTE Advanced Mobile Hotspot - Novatel 7730L
7 Review
πΆ Sprint Internet On The Go Mobile Hotspot - Convenient, Pay-As-You-Go Wireless Device for Hassle-free Internet Access
6 Review
π uni USB C Hub with Ethernet Adapter, 4K HDMI, Gigabit Ethernet, and 3 USB 3.0 Ports for MacBook Pro, iPad Pro, XPS
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π StarTech.com NETRS232 Serial to IP Ethernet Device Server - DIN Rail Mountable - Serial Device Server - Serial Over IP Device Server (Black)
4 Review
UGREEN USB 3.0 Ethernet Adapter Hub with RJ45: Fast Gigabit Ethernet Converter, 3 Ports USB 3.0 Hub Compatible for MacBook, iMac, Surface Pro, Chromebook, Laptop, PC
11 Review
π CERRXIAN RS232 to Ethernet Serial Device Server - TCP/IP Converter with 1Port DB9 RS232 Serial to Ethernet Connectivity
3 Review