Extended data
China Unicom serves its customers through business halls all over the country, customer service hotline "100 10", online business hall, SMS, mobile phone business hall, self-service terminal, official Weibo and WeChat customer service. Customer service includes consultation, inquiry, business handling, fault declaration, complaint and suggestion acceptance, etc.
The international roaming service hotline18618610010 provides 7×24 hours service for China Unicom's overseas roaming customers. China Unicom implemented corresponding measures to ensure that customers' questions were answered within the agreed time limit. For example, for some problems that cannot be solved online, users are promised to solve them within a limited time.
reference data
China United Network Communications Group Co., Ltd.-Customer Service