https://wccftech.com/unc0ver-jailbreak-for-ios-13-to-ios-13-3-released-for-a12-a13-devices/

We have all been waiting for the unc0ver jailbreak tool to release for the latest iPhone models. Well now, the company has seen fit to release it for the iPhone XS, iPhone XR, iPhone 11, iPhone 11 Pro running iOS 13 to iOS 13.3. Unc0ver jailbreak for iOS 13.3 is the world's first too available for A12 and A13 devices. If you have been anxiously waiting for the update, now is the time to get excited.

Unc0ver jailbreak for iOS 13.3 has been updated to version 4.0.0 that features full-fledged support for devices powered by the A12 and A13 Bionic processors. It also adds support for Cydia and system-wide injection. For tweak injection, the latest Unc0ver jailbreak for iOS 13.3 will rely on Substitute since Saurik has not yet updated Cydia Substrate for the latest processors.