Huawei’s device speed is 150 Mbps which is the maximum theoretical speed of 4G and wifi. The actual rate may vary in a different network environment. Pocket wifi works just like any internet-connected device, only that it is a lot smaller and portable than your traditional home wifi router. Unlike the latter, mobile wifi is designed for use without location constraints, allowing you to stay connected to the web wherever you find yourself. Your Huawei device should now accept SIM cards from any carrier.