Huawei has had its CFO arrested and its hardware banned from US government use, and it is now suing the US government. Huawei has also lost carrier partners like AT&T and Verizon as its attempts to push into the US market. Huawei is the biggest smartphone manufacturer in China but their phones like the Huawei P20 Pro and the Huawei Mate 20 Pro are largely unknown in the US.