Call Defender - Caller ID

Contains adsIn-app purchases
107K reviews
Content rating
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About this app

Call Defender, a FREE spam call blocking app that has protected millions of users against malicious spam calls.

“BLOCKING”: Just turn on "Spam Database" and enjoy a life free of spam, no additional charges needed! The database is provided by HKJunkCall.

“CALLER IDENTIFICATION”: Enjoy real-time caller identification! Call Defender shows the name of public or private organizations when they are calling you. Call Defender can identify over 500 thousand HK phone numbers which include hospitals, educational institutions and so on. You may want to pick up a call from the hospital even if you are in the middle of a important meeting, right? The data comes from HKJunkCall Whitelist, community, Internet, websites and number owners. We DONT upload the contact books of users.

“REALTIME DATABASE”: The system checks the database every 10 minutes, and updates to the device when there is a new spam number, effectively eliminating all spam calls that frequently harass people.

Call Defender provides the simplest way to block unwanted calls and protect your privacy with ease. Call defender also lets you know who is calling using our comprehensive global database with over 700 million numbers.

【 Product Features】
► Block Spam Calls automatically.
► Identify Unknown Calls
► Advance settings for customizing block calls.
► Search spam number database.
► Provide Daily Call Report for any blocked/missed calls.
► Anti-fraud Information Center, providing education messages about fraud to user.

• To make sure Call Defender works properly, please load the app at least once after installation.
• The point-rewards system will be deprecated.
• If you are using optimization software, make sure to put Call Defender as a trusted app.
• Network connection is required for database download or caller ID feature
• Devices using unofficial Android framework may have compatibility issues.

Privacy Policy:
Updated on
Mar 11, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Contacts and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

106K reviews
Kai Tsang
March 19, 2024
Used this app for almost 8 years. It does what it says in description. If you have problems with getting this app to work on your phone, try clear data and cache then re-start the app. I recently had this problem after phone factory reset. I had to clear cache and data for this app before it would work.
1 person found this review helpful
Christopher Ip
March 30, 2024
Was a fan before, now has a pop up ad that takes over your home screen after every call.. Disappointed.
4 people found this review helpful
A Google user
January 14, 2019
Used to be a lifesaver app, filtering out nuisance calls. Now it turns off the ringer every time it filters a call, but does not turn the ringer on again afterward. So all day I miss legitimate calls because I don't hear them. It has become a less than useless app as a result. Developer had known the problem for months, but won't fix. Absolutely no way will I set this untrustworthy app as my default calling app.
34 people found this review helpful
January 15, 2019
We apologize for any inconvenience caused. Because of Google's newest policy, the ringtone mode is affected. It will be fixed soon. Please choose "Block Call" in "Spam Detection Action", disable call vibration and set Call Defender as the default phone app. If you need further assistance, please tap the menu and Contact Us. Thank you. By C