Use your phone’s call log to review recent incoming calls
Check your carrier’s call details or itemized bill for blocked or private numbers
Enable caller ID or call screening features on your phone
Use a reverse phone lookup app or service if a number is available
Contact your mobile carrier to ask about options for identifying blocked calls
Set up call tracing or anonymous call rejection if your carrier supports it
Ask the caller to leave a voicemail if they are legitimate
Use third-party call identification apps that can flag private or spam calls
Block repeated private calls through your phone settings
Report harassing no caller ID calls to your carrier or local authorities