Check your phone’s blocked contacts or blocked numbers list in Settings
Open the Phone app and look for a Blocked Contacts, Blocked Numbers, or Call Blocking section
Review your call log for repeated missed calls from the same number
Check your messages for texts that may have been filtered, silenced, or sent to spam
Ask the person to call or text from another number to confirm
Use a different phone to call your number and see if it goes through
Contact your mobile carrier to ask whether call blocking features are active
Check third-party call-blocking apps on your device for their blocked list
Search your device settings for spam protection, call screening, or unknown caller filters
Remove numbers one by one from the blocked list if you want to identify the blocked number