A Siri bug on iOS 16.4.1 won’t let you set Calendar events on the 31st

An alleged Siri bug in iOS 16.4.1 has created an accessibility problem for vision-impaired users, who rely on their voice to set Calendar appointments.

iPhone 12 with the Hey Siri orb displayed at the bottom of the Lock Screen
Check any appointments set by voice | Image: Omid Armin/Unsplash
  • A Siri bug in iOS 16.4.1 is reportedly causing issues in Apple’s stock Calendar app when attempting to create certain appointments with your voice.
  • Using Siri to create an event on the 31st automatically reverts it to the 30th day of the month, and users cannot correct the mistake with their voice.
  • The bug particularly inconveniences people with vision problems who may find it challenging to correct the event date manually in the Calendar app.

iOS 16.4.1’s Siri may have a Calendar problem

The Tech Talk radio show spotlighted the issue after a blind caller complained about the previously unreported problem, according to AppleInsider.

The caller said that using the Siri assistant to create an appointment on the 31st day of any month with 31 days automatically reverts the event date to the 30th.

The mistake is easily fixed, but you must open the Calendar app to manually edit the appointment date. Apple’s support teams have reportedly acknowledged that this is a known problem, saying it’s exclusive to iOS 16.4.1 and iPadOS 16.4.1.

iOS 16.5, which is currently in testing, isn’t affected by this issue.

“Hey Siri, do I have any appointments on the 31st?”

I have tried to reproduce this issue on iOS 16.4.1 and iPadOS 16.4.1 by asking Siri to set a Calendar event for the 31st of May, but it stayed there and didn’t move to the 30th. Only a small portion of iOS 16.4.1 users may be susceptible to this issue. We also couldn’t replicate the bug on macOS Ventura 13.3.1.

This isn’t a biggie if your vision is fine. But imagine being blind and relying on Siri to set appointments, only to be forced to navigate the Calendar app with VoiceOVer to correct the mistake. For vision-impaired users, this is a huge accessibility problem.

Apple is likely to fix it in an upcoming software update.

Apple Calendar tutorials