# Call Shield: Spam Call Blocker — Block phone number ranges

> Blocks unwanted calls and number ranges using a secure, local, offline blocklist. (iPhone/iPad app by 磊 汪.)

- Source: https://appshunter.io/ios/app/call-shield-spam-call-blocker/id6744029271 (this page in markdown: same URL + `.md`)
- Developer: [磊 汪](https://appshunter.io/developer/1063627762)
- Category: Utilities, Productivity
- Price: $1.99
- Rating: 1.00/5 from 1 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 35 MB
- Languages: American English
- Released: 2025-05-20
- Data updated: 2026-08-23
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/call-shield-spam-call-blocker/id6744029271/reviews.md

## What is Call Shield?

Call Shield: Block Unwanted Calls and Safeguard Your Privacy

Take control of incoming calls with Call Shield — a powerful utility that blocks robocallers, telemarketers, and unwanted numbers using custom blocklists that operate entirely on your device.

Please Note:
Call Shield is a custom rule and list manager. It does NOT include a pre-packaged spam database or built-in caller directory. You create, import, and manage your own custom blocklists and number ranges.

Key Features:
- Block & Identify Unwanted Calls: Add specific numbers or entire number ranges (prefixes) to block or identify callers. Supports up to 200 million numbers across multiple extensions.
- 100% Offline & Private: Fully offline operation. No login required, and no data is transmitted — your privacy stays completely protected.
- Flexible Custom Lists: Easily create, import, and manage your own custom blocklists and identification ranges.

Important Notes:
- No Pre-packaged Database: Call Shield does not provide a pre-installed spam database; you need to add your own numbers, prefixes, or lists.
- Voicemail Handling: Blocked calls may still be forwarded to voicemail, depending on your mobile carrier’s policies.
- Do Not Disturb Mode: If Do Not Disturb mode is active, blocked calls may still appear silently on your Home screen or in Recents.
- Extension Setup: If Call Shield extensions don't appear immediately after updating rules, open Settings > Phone > Call Blocking & Identification to verify they are enabled.

Privacy Policy: 
Call Shield does not collect, store, or transmit any personal data or call history. All blocking is handled locally on your device.

## Key features

- Block unwanted calls
- Block number ranges (prefixes)
- Offline functionality
- No login required
- Local device blocklist
- Supports millions of blocked numbers

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/call-shield-spam-call-blocker/id6744029271/reviews.md

### 1/5 — DO NOT BUY!!!

*2026-01-17*

I normally do not pay for apps, but I researched this developer and decided this was an app that I could really use. This app is useless! It states I need to update it to use, with no way to update. I have to enter numbers manually instead of the app grabbing them for me. I can block every number myself faster and easier than this ridiculous app!!!

**Developer response:** We sincerely apologize for the confusion caused by our App Store previews. When we mention "Block Millions of Numbers," we mean that creating a single prefix rule (e.g., blocking an area code or telemarketer prefix) mathematically shields your device from millions of potential spoofed call combinations with zero impact on your privacy.

Regarding your setup issues:
1. No manual typing for each number: You don't need to type individual phone numbers! Adding a single prefix (like +1 800) automatically blocks millions of numbers sharing that range.
2. Fixing the "Update Required" status: Please open iOS Settings > Phone > Call Blocking & Identification on your iPhone and ensure Call Shield is enabled. Once enabled, returning to the app will complete the setup.

Since Call Shield runs 100% locally on your device without harvesting your contacts or tracking your data, it uses custom range rules rather than central cloud databases.

If this mechanism isn't what you expected, please feel free to request a full, instant refund directly from Apple at reportaproblem.apple.com.

### 1/5 — Doesn’t work at all

*2025-10-03*

Don’t buy- it won’t block any call. I do get a horrible amount of Spam calls from Austria and tried to block them with this app to no effect.

### 1/5 — Application don’t work

*2025-07-23*

After adding three ranges of numbers, the app report «Call Shield works in the background. You may switch apps, but don’t force quit» and you can't do anything else. However, spam calls continue to arrive in these three ranges. Reinstalling doesn't help

## Frequently asked questions about Call Shield

### What is Call Shield?

Call Shield is a utility app designed to block unwanted incoming calls, including robocallers and telemarketers. It uses a secure, local blocklist that operates entirely on your device for enhanced privacy.

### Does Call Shield have ads?

No, Call Shield is ad-free. It does not display advertisements within the application, providing an uninterrupted user experience.

### How much does Call Shield cost?

Call Shield is a paid application and is available for a one-time purchase price of $1.99.

### Can Call Shield block entire number ranges?

Yes, Call Shield allows you to block specific numbers or entire number ranges using prefixes. This feature helps in reducing spam and robocalls more effectively.

### Does Call Shield require an internet connection or login?

No, Call Shield offers fully offline functionality. No login is required, and no personal data or call history is transmitted, ensuring your privacy is protected.

### What happens to blocked calls with Call Shield?

Blocked calls may still be forwarded to voicemail, depending on your mobile carrier's policies. For full blocking functionality, ensure Do Not Disturb mode is disabled.

### On which devices can I use Call Shield?

Call Shield is currently supported on iPhones. It is designed to work with iOS devices.

### How often is Call Shield updated?

Call Shield was last updated on December 28, 2025, with version 25.12.20. Updates typically include improvements to blocking capabilities and performance.

## Version history (last 5 releases)

### 26.7.23 — 2026-07-25

- Improved Call Directory Synchronization: Fixed an issue where duplicate or overlapping phone numbers could prevent rule updates from completing.
- Enhanced Rule Processing: Smart range merging and deduplication make updating large blocking and identification lists faster and more reliable.
- Stability & Reliability Improvements: Optimized extension loading flow to ensure smooth background rule updates.

### 26.1.5 — 2026-07-21

Thank you so much for using Call Shield. This release includes bug fixes and improvements.

If you are enjoying the app, please consider leaving a review or rating!

### 25.12.20 — 2025-12-28

Thank you so much for using Call Shield. This release includes bug fixes and improvements.

If you are enjoying the app, please consider leaving a review or rating!

### 25.9.10 — 2025-09-11

Added support for iOS 26 Liquid Glass

### 1.1.1 — 2025-06-12

Thank you so much for using Call Shield. This release includes bug fixes and improvements.

If you are enjoying the app, please consider leaving a review or rating!

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All apps by 磊 汪: https://appshunter.io/developer/1063627762

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*