Call Defender provides the simplest way to block suspicious calls. With Caller ID information provided by the global database of Whoscall and HKJunkCall, Call Defender immediately blocks or identifies a malicious or cold call when your phone rings.

Attention: due to the limitations of the iOS system, there is no viewing of blocked numbers from the App.

There are many reasons for App blocking or identification failure, such as mobile phone number not registered on the database, App version or database not updated, or the user not authorizing the App. Should you have trouble blocking or identifying calls, please first check if any of the above causes applies.

For permission settings, please go to iOS "Settings" > "Phone" > "Call Blocking & Identification" make sure Call Defender is turned on.

If you still can't block or identify calls after ruling out the aforementioned causes, please email customer service and submit information that includes your phone model and the app version, and we will get back to you ASAP.

Attention: due to the limitations of the iOS system, there is no viewing of blocked numbers from the App.

The App features "Blacklist" for users to customize their own blocking list. Users can go to "Settings" and tap "Add to Blocklist" in "Advanced" to add a number to be blocked. For numbers you don’t want to block, you can go to "Add to Allow List" to add the intended numbers.

For numbers you don’t want to block, you can go to "Add to Allow List" to add the intended numbers.

Due to iOS limitations, the App does not support blocking unknown calls on an iOS system. Instead, you can refer to the following to block unknown calls.

(1) Go to "Phone" in iOS Settings

(2) Tap "Silence Unknown Callers" and turn it on

(3) Done. Calls from unknown numbers will be silenced, sent to voicemail, and displayed on the "Recents" list.

Go to "Add to Allow List" in the app settings, and swipe left on the number you want to unblock.

The current iOS version does not support overseas call blocking, but you can enter the number (with country code) you want to block in the "Blacklist".

Attention: Non-applicable to Hong Kong users who have migrated abroad.

Features of the premium version include auto-update of database, “Real-time Spam Calls” data, and it is also ad-free. If you are using the premium version and still seeing ads, you can confirm your purchase status via "Subscriptions" in the iOS settings.

Please click "Upgrade" on the homepage of the App. Currently, Call Defender provides users with monthly and annual plans. With the pro version, you can enjoy auto-update of database without opening the App. It also supports “Real-time Spam Calls” data, and no ads.

◆ Database Auto-update
◆ Real-time Spam Calls Data
◆ Ad-free

In addition, please understand that due to the different system specifications and functions between Android and iOS, the subscription services provided by Call Defender are not the same.

Call Defender Pro is billed to the user's Apple ID. When you change your phone, just log in to the account with which you have subscribed to the premium version. If you want to confirm the subscription, please go to "Subscriptions" in the iOS settings.

Please refer to "How to cancel a subscription from Apple" and "Request a refund for apps or content that you bought from Apple" .

Since Call Defender uses HKJunkCall’s database, should your phone number be registered on the database, please email customer service and provide the number. We will submit it to HKJunkCall for confirmation, or you can contact HKJunkCall directly to confirm.

The processing time usually takes one week. If your phone number is still in the Spam Calls database after a week, please contact customer service or HKJunkCall again.