Guides
Spam Call Blocker Buyer's Guides
How to judge a call blocker before you install it, what to pay for, and how to set up Block Guard so it lives up to the test.
How to Use Block Guard
Install, protect your important callers, pick a protection level, and tune from the log. The setup that makes any spam call blocker earn its keep.
Read the guide →Best Spam Call Blocker for Android
The seven things that separate a spam call blocker you keep from one you uninstall, and how Block Guard scores on each.
Read the guide →Spam Call Blocker Feature Checklist
A printable ten-point checklist to run any call blocker through before you trust it with your phone.
Read the guide →Free vs. Paid Spam Call Blockers
What a free blocker should already do, what is worth paying for, and the pricing patterns to avoid.
Read the guide →Spam Call Blocker vs. Carrier Apps
Why the built-in dialer and carrier spam labels are a floor, not a ceiling, and what a dedicated app adds.
Read the guide →Best Spam Call Blocker for Business Phones
How to block spam on a phone that has to answer unknown customers, without a contacts-only lockdown.
Read the guide →Frequently Asked Questions
Straight answers on pricing, permissions, whitelists, the built-in filter, and what makes a blocker the best choice.
Browse the FAQ →Put Block Guard Through the Checklist Yourself
Free to install on Android. Whitelists, unknown-caller and private-number rules, area code and prefix filters, spoofing controls, SMS filtering, profiles, schedules, and a log that explains every block.