iOS 13.4.1 fixes VPN bug and Facetime issues

[German]Apple has released an update from iOS to version 13.4.1 on April 7, 2020. It is a bug-fix update, which should fix a bug in Facetime as well as the bug in VPNs. Furthermore there are further fixes.


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During the night there was already a hint from German blog reader fre4kyC0de about this update, which should fix some bug fixes – thanks for that. The update is already listed on this Apple page, but there are no details linked yet. I don’t have any Apple devices where I get the change log displayed during the update. At the colleagues of deskmodder someone posted short notes in this article about what was fixed 

Fix for the Facetime connection problem

A week ago, users reported that updates to iOS 13.4 and macOS 10.15.4 were causing problems with facetime calls. This post on the Apple support forum sums it up:

FaceTime: after upgrade to 13.4 cannot communicate with machines running on iOS 9

When I try to FaceTime with a machine than runs iOS 9, it rings saying it’s connecting but never does with line dropping after a while.

Before the upgrade to 13.4 there was absolutely no problem. Any idea how to fix it?

Bei der Analyse stellt sich heraus, dass es in iOS 13.4 auftritt, wenn Anrufe zu iOS 9-Geräten getätigt werden sollen. Auf reddit.com gibt es ebenfalls einen Thread, der das Problem zwischen iOS 13.4 auf dem iPad und macOS 10.15.4 thematisiert. Macrumors hat in diesem Artikel einige Details veröffentlicht.

According to deskmodder and several tweets this bug should now be fixed by updating to iOS/iPadOS 13.4.1. The colleagues of deskmodder.de quote from the change log displayed during the update: 


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It fixes a problem where iPadOS 13.4 devices cannot participate in FaceTime calls with devices running iOS 9.3.6 and older or OS X El Capitan 10.11.6 and older.

Fix for the VPN bug in iOS 13.4

In addition, there was a bug in iOS/iPadOS 13.4 that could not guarantee encryption for VPN connections. This bug in iOS 13.4 could prevent all traffic from VPN connections from being properly encrypted. The whole thing was disclosed by the VPN provider Proton. I had mentioned this in the blog post Bug in iOS version 13.4 may bypass VPN encryption. According to deskmodder.de this bug should have been fixed.

Further fixes

Due to the lack of Apple’s change log I use the information from deskmodder.de. The queick access to Bluetooth via the context menu of the settings app should now work properly again. It also states that the flashlight on the new iPad Pro 12.9 inch can be activated again normally from the lock screen and from the control center.


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