The 中華電信行動預付卡, or "CHT Prepaid(Ideal) Card," is a utility application developed by TELECOMMUNICATION LABCHUNGHWA TELECOM CO. LTD. It provides a range of useful features for users of the CHT Prepaid Card, offering round-the-clock services such as instant access to "mobile number information, top-up, purchase, and notification settings."

With 中華電信行動預付卡, users can log in using their mobile prepaid card number and password. The app allows them to check the available usage and validity of their main account, other accounts, as well as metered and daily plans. Users can also top-up their accounts using prepaid cards or credit cards, and make purchases using their main account.

Other notable features include push notifications, where users can receive important information, and notification settings, where users can customize language preferences and set low balance and expiration date alerts. The app also provides a customer service hotline for users to seek assistance.

Overall, 中華電信行動預付卡 offers a convenient and practical solution for users of CHT Prepaid Cards, allowing them to manage their accounts and access various services anytime, anywhere.