https://www.reuters.com/article/us-qualcomm-tech/samsung-huawei-supply-majority-of-own-modem-chips-qualcomm-says-idUSKCN1OZ00F

The two largest smart phone makers in the world supply a majority of their own modem chips to help their devices connect to wireless data networks, according to evidence presented at an antitrust trial for chip supplier Qualcomm Inc .