Mobile / Broadband / Fixed Line & MOD Services 24-hour customer service hotline 0800-080-123(via Chunghwa Telecom local call、mobile phone direct dial 123) Mobile Communication /Telephone / ADSL / FTTx / MOD / International Call / Intelligent Network Services , etc, Business inquiries and processing, billing and rates related issues, phone line suspension due to lost phones, phone re-activation post required payment, other issues due to interference or poor communication, preventative construction case reporting and processing, line abnormality reporting and processing, emergency accident notification and handling, telecommunications related complaints, etc. 0800-080-123(via Chunghwa Telecom local call、mobile phone direct dial 123) Mobile Communication /Telephone / ADSL / FTTx / MOD / International Call / Intelligent Network Services , etc, Business inquiries and processing, billing and rates related issues, phone line suspension due to lost phones, phone re-activation post required payment, other issues due to interference or poor communication, preventative construction case reporting and processing, line abnormality reporting and processing, emergency accident notification and handling, telecommunications related complaints, etc. Enterprise Customer Service Center 24-hour customer service hotline dial 0800-080-365 or 0800-080-123(via Chunghwa Telecom local call、mobile phone direct dial 123) Business inquiries and processing, billing and rates, troubleshooting and reporting related to Enterprise Broadband Internet access, Enterprise value-added services, Enterprise information security, IDC, SaaS CRM customer relationship management systems, ICT services (including ITS Car News Courier, PBX switch / E1 GW, IPCC customer service system, IMO-UTM services, IEN intelligent energy services). (To call the service hotline from outside Taiwan by telephone, mobile or public phone, the local IDD fee will be charged.) dial 0800-080-365 or 0800-080-123(via Chunghwa Telecom local call、mobile phone direct dial 123) Business inquiries and processing, billing and rates, troubleshooting and reporting related to Enterprise Broadband Internet access, Enterprise value-added services, Enterprise information security, IDC, SaaS CRM customer relationship management systems, ICT services (including ITS Car News Courier, PBX switch / E1 GW, IPCC customer service system, IMO-UTM services, IEN intelligent energy services). (To call the service hotline from outside Taiwan by telephone, mobile or public phone, the local IDD fee will be charged.)

Administration Office Operator Customer service hotline Monday~Friday 08:30~17:30 Administration Office Operator 02-2344-6789 General administrative matter inquiries The phone call will be charged to the user, for toll free services, please dial 0800-080-123 Monday~Friday 08:30~17:30 Administration Office Operator 02-2344-6789 General administrative matter inquiries The phone call will be charged to the user, for toll free services, please dial 0800-080-123 Personal Data and Privacy Protection 24-hour customer service hotline 0800-080-123(via Chunghwa Telecom local call、mobile phone direct dial 123) For any inquiries and related issues on our privacy policy, on our personal data protection notice, on exerciseing your right in accordance with the Personal Data Protection Act or other relevant laws, and complaints or emergency notifications on Personal Data regarding our business, etc. (To call the service hotline from outside Taiwan by telephone, mobile or public phone, the local IDD fee will be charged.) 0800-080-123(via Chunghwa Telecom local call、mobile phone direct dial 123) For any inquiries and related issues on our privacy policy, on our personal data protection notice, on exerciseing your right in accordance with the Personal Data Protection Act or other relevant laws, and complaints or emergency notifications on Personal Data regarding our business, etc. (To call the service hotline from outside Taiwan by telephone, mobile or public phone, the local IDD fee will be charged.)