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Getting Started

Common questions about setting up and using WUCall.

How do I enable call screening?​

  1. Open WUCall
  2. Tap the shield button on the home screen to enable protection
  3. If prompted, grant WUCall the "Call Screening" role
  4. That's it! Unknown calls will now be screened

Why do I need to grant permissions?​

WUCall requires several permissions to function:

PermissionWhy It's Needed
Call Screening RoleThis Android system role allows WUCall to intercept incoming calls before they ring
Read ContactsTo check if an incoming caller is in your contacts (known callers are not screened)
Send SMSTo send the auto-reply message to screened callers
Read Phone StateTo detect when calls are coming in

All permissions are used only for call screening. No data leaves your device.

What happens when I enable protection?​

When protection is enabled:

  1. Incoming calls are checked against your contacts
  2. If the caller is in your contacts, the call rings normally
  3. If the caller is not in your contacts, WUCall checks your rules
  4. Based on the matching rule, the call may be silently rejected
  5. If configured, an SMS is automatically sent asking why they're calling

Will this block calls from my contacts?​

No. By default, WUCall only screens calls from numbers not in your contacts. Your friends, family, and saved contacts will always get through.

You can create rules that apply to contacts if needed, but this is disabled by default.