https://wccftech.com/heres-how-ios-13-4-1-stacks-up-against-ios-13-4-in-a-speed-test-comparison-video/

A few days ago, Apple had seen fit to release iOS 13.4.1 to the general public. While it was a minor update aimed at bug fixes pertaining to Bluetooth and FaceTime where calls were prevented from going out to older devices. However, you have to ask whether the new firmware update brings performance improvements to the table. To find an answer to that, check out the iOS 13.4.1 speed test comparison.

To make things more clear for us and to find the truth, YouTuber iAppleBytes have conducted an iOS 13.4.1 speed test comparison against iOS 13.4. The test was conducted across a wide range of iPhone models. As can be seen in the video embedded below, iOS 13.4.1 does not bring any significant performance boost to the table. The test was conducted on the iPhone SE, iPhone 6S, iPhone 7, iPhone 8 and iPhone XR. Check out the video embedded below for more details on it.