Personally recommend Huawei WiFi3, smaller size, more convenient to go out.
But if you're traveling, it's actually better to think about the grid,
The size is similar to Huawei WiFi3, but the battery life is long,
Unlike Huawei WiFi3, which is a single network, the grid is a dual-network device.
Support Unicom and telecom operators, the signal coverage should be wider.