https://technode.com/2018/03/07/china-unicom-esim/
initially in 5 cities but its the way ahead. apple currently uses this in the apple watch however it is very limited in Australia (as usual). esoim will allow a user to have the one phone number over multiple devices.
https://www.androidpolice.com/2017/10/20/huawei-watch-2-pro-esim-launched-china-¥2588-390/
