Building trust together
At Whoscall, your security is our priority. We use advanced technology and strong protocols to protect your information for a safe experience.
Protect Your Information Today
AI prediction technology
Whoscall uses advanced AI to detect scam groups and warn about suspicious numbers.
Global user reports
Whoscall uses a global system to accurately label numbers, with a team reviewing reports to remove false entries.
Cooperation with foreign authorities
Whoscall partners with authorities to improve call screening by sharing fraud number databases.
Public databases
Whoscall compiles data using technology to search public international databases.
Certified by international information security and quality standards
Whoscall has been constantly improving its information security and management practices to safeguard user data and ensure high-quality service. The application has been certified by the ISO 27001, 27701 and 9001 standards.

Your privacy protected
Strict data controls
Full anonymization
No unnecessary permissions
FAQs
Whoscall is liable for the security of all user data. Here is our double encryption approach: AES encryption is implemented on mobile devices and SSL encryption is used during data transmission. All of the data you provide will be compiled into anonymous statistical analysis information that is non-personally identifiable. We work hard to ensure your privacy and data security.
Whoscall requests for app permissions from Android users to provide full range of product features. For example, we request you to set Whoscall as the default call app to identify incoming calls faster and ensure phone number blocking works correctly. We request for SMS permission to enable SMS source identification.
A scope of the application of each permission requested will be provided to you beforehand. You may cancel or refuse to grant such permissions at any time if you do not accept how we collect, process and use your data, but you will not be able to enjoy the full range of product features afterwards. Please refer to the following features enabled by the permissions we request for.
In addition, due to system restriction, we only request for permission to use APNs from iOS users.
【Product Features Enabled by Each Android App Permission】
- Phone/ Call Logs/ Contacts: The basic permissions to enable caller identification, telecom identification, and phone number block features. These permissions are essential to activate core product features.
- Default Call App: The permission is required to enhance call identification speed and ensure phone number blocking works correctly.
- SMS: The permission is required to enable SMS source identification.
- Default SMS App: The permission is required to block or send SMS messages.
- Camera/ Media/ Microphone: These permissions are required to send rich multimedia MMS messages (a sub-function of SMS) via Whoscall.
Whoscall will never monitor your phone calls as it is a violation of our code of ethics.