Notes about the CID file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The CID file type is primarily associated with 'CallerID' by AnalogX. CallerID is a program that uses any Unimodem/V-compatible voice modem that has Caller ID support to track incoming calls; including who is calling and their number (if available), how many calls have been received from this person, when the first call and when the last calls were logged, and more.