Numerous HSBC and Hang Seng Bank customers in Hong Kong reported being unable to access mobile banking services due to technical system errors.

HSBC, the biggest lender in the city with over 7 million customers in Hong Kong, had its mobile banking service interrupted, with many customers complaining they could not log on to the system on Monday morning. More than 10 HSBC customers contacted the South China Morning Post on Monday morning saying they were unable to log into the mobile banking since 9am. The mobile banking app showed a message saying “access is restricted until we have your valid email address and mobile number,” even...