Any SIM card can be plugged into a mobile router to use its traffic, and some devices also support in-app SMS.
Since LZ is a Unicom card, I recommend several mobile routers. Plug in the card and set the wifi password through the APP.
1. Purple Mi MF855, 300 or so price cost-effective, full Netcom (telecom only supports 4G), 7800 MA large battery, battery life is guaranteed, can also be used as a mobile power supply. In addition, you can use the inserted SIM card to send SMS messages within the mobile APP.
2. Huawei E55733S - 856,400 yuan price, full Netcom (mobile telecommunications only support 4G)
3. Zte nubia WD660, about 450-500 price, using Qualcomm baseband chip, almost real full Netcom (in addition to mobile 3G, but mobile 3G does not support it, too junk)