China Mobile, China Unicom and China Telecom, are the three large providers of mobile and internet in China. China Telecom alone served more than 145 million broadband subscribers and 300 million mobile users; China Unicom had about 300 million subscribers; and China Mobile, the biggest of them all, had 925 million users, as of 2018. Combined, the three operators had over 3.4 million 4G base-stations in China. Several Chinese telecommunications companies, most notably Huawei and ZTE, have been accused of spying for the Chinese military.