Do Hong Kong people use China Mobile, China Telecom and China Unicom?

Hongkong has China Telecom and China Unicom. There are many telecom companies in Hong Kong, including PCCW, Hutchison Global Telecommunications, New World, Hong Kong Broadband, Cable Broadband, Global, etc. Among them, Hutchison Global Telecom has the highest mobile phone market share. The cost of making long-distance calls is much cheaper than that in China. The telecommunications industry in Hong Kong is highly competitive. The cost of domestic long-distance call is as low as 0.05 or even lower. I hope this answer can solve the problem. Thank you.