Anonymous Call Rejection is a feature that automatically blocks callers who have withheld their phone number or are calling from a "Private" ID.
How it Works
When enabled, any incoming call without a caller ID will be automatically rejected before your phone even rings.
This is a powerful tool for reducing unsolicited or spam calls.
Please note: This feature is not enabled by default.
How to Enable This Feature
If you would like to activate Anonymous Call Rejection on your account, please send a request to our support team from the registered email address we hold on file for you:
Email: support@onsim.uk
Subject: Request to Enable Anonymous Call Rejection - [Your Account Number/Phone Number].