The Snapdragon 835 platform on the market has three Win10 notebooks, the main selling point of these products is 'Always Connected' (ACPC) in the case of the whole 4G can still guarantee 20 hours + battery life. However, bearer 4G communication baseband is a must, but also have the support of operators.
According to Windows Central, Microsoft and Qualcomm announced that the world's first carriers to support Always Connected PC products include -
China: China Telecom
Italy: TIM (Telecom Italia)
British: EE
United States: Sprint, Verizon
Take Lenovo Miix 630 as an example, Both built-in eSIM module, as well as external SIM card, the flexibility is very high.