Issues with weekly calendar view on iPhone 11 after iOS 27.0.1 update

You may have noticed this behaviour after updating to iOS 27.0.1, but that does not necessarily mean the update introduced the change. The weekly calendar view behaved exactly as you described on iOS 26 as well: the full weekly view is visible only when the Calendar app is used in landscape orientation. This behaviour was already present in iOS 26, so it is not a new change introduced by iOS 27.0.1.

Think about how the weekly calendar would look in portrait orientation. The screen would have to accommodate seven days in separate columns, leaving each column extremely narrow. The space available to display event titles and other details would be so limited that reading them would become difficult, if not practically impossible. Displaying the weekly calendar in landscape orientation provides more horizontal space, making it easier to view and read your events.

I have two devices, one running iOS 26.6.2 on an iPhone 12 Pro and the other running iOS 27.0.1 on an iPhone 13 Pro. I have deliberately kept them on different iOS versions so that I can verify such claims and respond to queries suggesting that a particular behaviour has changed after an iOS update.

Just because you first noticed a behaviour in iOS 27.0.1 does not mean that it was introduced in that version. To establish whether Apple has changed something, we need to compare the behaviour across iOS versions rather than assume that a newly noticed behaviour is the result of the latest update.

Please update to iOS 27.2.0. This thread concerns iOS 27.0.1. If you’ve already updated please create a new thread with specific details are the issues you are experiencing.

Paula-La wrote:

The new iOS 27.0.1 has changed the calendar on my iPhone 11.

Not every issue an individual encounters on their device can be attributed to an iOS update. iOS 27 or later may have coincided with what you are experiencing, but that does not mean the issue was triggered by iOS. Coincidence in timing is not, by itself, evidence of causation.

If the update itself were the root cause, then every device running that same version of iOS would exhibit the identical problem. In such a scenario, the forums would be flooded with countless posts reporting the same malfunction, creating an unmistakable wave of complaints that no one could possibly overlook.

The absence of such widespread reports strongly indicates that the issue is not a general, system-wide problem with iOS 27 or later, but rather something specific to the individual device, its configuration, installed apps, settings, hardware, or another interacting factor.

In short: iOS 27 or later may be a coincidence in timing, but there is no basis to conclude that iOS itself triggered the problem simply because the issue appeared after the update.

See what each update does: About iOS 27 Updates, About iOS 26 Updates, About iOS 18 Updates, About iOS 17 Updates, About iOS 16 Updates, About iOS 15 Updates, About iOS 14 Updates, About iOS 13 Updates, About iOS 12 Updates, and so on...

I have the same frustration..the Weekly view used to be available and now it isn’t and what has replaced it is bad design which flies completely in the face of what Apple has always been most proud of .. well thought out design.

I have the same issue. Can’t read the calendar at all if I don’t have reading glasses. Did not do this before the update.