Jima Caller ID is a utility tool designed for Hong Kong users to tackle the prevalent issue of spam calls, including potential scams. The app offers essential features like call blocking and identification, allowing users to either block or identify incoming blacklist calls. It utilizes the hkjunkcall.com database for querying spam calls, enabling offline checks for spam call identification.

Users can actively contribute to combating spam calls by reporting them and customize actions for different categories of spam calls. The app supports whitelisting and blacklisting numbers, along with the option to import/export lists through CSV for backup purposes. With automatic database updates and scams alerts, Jima Caller ID aims to keep users informed and protected against phone scams effectively.