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iOS 15.4.1 ― Bug Fixes, Changes, and Improvements

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The first post of this thread is a WikiPost and can be edited by anyone with the appropiate permissions. Your edits will be public.
Banglazed

Banglazed

macrumors 603
Original poster
Apr 17, 2017
5,054
9,816
Cupertino, CA
iOS 15.4.1

Release Date ― March 31, 2022
Build Number ― 19E258
Darwin Kernel Version ― 21.4.0: Mon Feb 21 21:27:57 PST 2022; root:xnu-8020.102.3~1

iOS 15.4.1 includes bug fixes and security updates for your iPhone and is recommended for all users.

This update includes the following bug fixes for your iPhone:
  • Battery may drain more quickly than expected after updating to iOS 15.4
  • Braille devices may become unresponsive while navigating text or displaying an alert
  • Made for iPhone hearing devices may lose connection within some third-party apps
iOS 15.4 RC Release Notes

New Features & Changes
New Issues
Remaining Issues
Resolved Issues

Additional Notes
  • iPhone SE (3rd gen): 1.00.04
  • iPhone 13/Mini/Pro/Max: 1.59.03
  • iPhone 12/Mini/Pro/Max: 2.53.01
  • iPhone 11/Pro/Max/SE (2nd gen)/iPad Air (4th gen): 3.02.01
  • iPhone XR/XS/Max: 4.03.02
  • Qualcomm iPhone 8/8 Plus/X: 7.02.00
  • Intel iPhone 8/8 Plus/X: 5.02.02
  • Qualcomm iPhone 7/7 Plus: 9.01.00
  • Intel iPhone 7/7 Plus: 6.01.01
  • iPhone SE (1st gen): 11.01.02
  • iPhone 6S/6S Plus: 9.01.00
United States
  • Verizon - 50.0
  • Visible (MVNO Verizon) 46.0
  • Verizon (iPad) - 41.0
  • T-Mobile - 50.0
  • AT&T - 50.0
  • FirstNet - 50.0.1
  • FirstNet (iPad) - 41.7.6
  • Cricket - 40.5.2
  • MetroPCS -
  • U.S. Cellular - 46.7.24
  • Sprint - 40.0
  • TracFone/Straight Talk/Walmart Family Mobile - 50.0
  • Xfinity Mobile 45
Australia
  • Optus - 50.0
  • Telstra - 50.0
  • Vodafone AU - 50.0
Belgium
  • BASE - 33.0
  • Orange B - 32.5.7
  • Proximus - 45.0
  • Telenet - 44.1
Canada
  • Videotron - 50.0
  • Rogers - 41.0
  • Fido - 49.0
  • Bell - 48.5
  • Telus - 50.0
  • Freedom/Shaw Mobile - 49.0
  • Fizz - 50.0
  • Virgin Mobile - 50.0
Denmark
  • 3 DK - 46.7.11
  • TDC 50.0
France
  • Bouygues Telecom - 40.0
  • Orange France - 50.0
Germany
  • Vodafone.de - 48.5
  • Telekom.de - 50.0
  • O2-DE - 48.5.1
Greece:
  • Cosmote - 38.0
Guatemala
  • TIGO GT - 49.0
India
  • Airtel - 49.0
  • Jio - 49.0
  • Vi India (Vodafone Idea) - 50.0
Ireland
  • Eir - 33.5
  • Vodafone IE - 38.0
Mexico
  • Mexico - Telcel - 50.0
Morocco
  • Orange - 50.0
Netherlands
  • KPN - 50.0
  • Vodafone NL - 45.0
Poland
  • T-Mobile -
  • Orange - 49.6.3 (Voice & SMS)
  • Play - 31.0
Portugal
  • Vodafone P - 40.0
Southeast Asia
  • Singapore Singtel -
  • Philippines Globe - 46.0
  • Philippines Globe (iPad) - 38.0
  • Philippines Smart - 44.0
  • Thailand AIS -
  • Malaysia Umobile - 33.0
  • Malaysia Maxis -33.0
  • Malaysia Digi -
  • Malaysia celcom -
  • Hong Kong - 32.0
  • Taiwan -
Sweden
  • Comviq -
  • Tre - 31.0
Switzerland
  • Salt - 45.0
  • Swisscom - 45.0
Turkey
  • Turkcell (Lifecell) - 36.5.5
  • Vodafone TR - 32.0
  • Turk Telekom - 32.0
United Kingdom
  • EE - 50.0
  • BT-UK (MVNO on EE)- 50.0.1
  • Three - 50.1
  • iD Mobile (MVNO on Three) - 36.5.4
  • O2-UK - 50.0
  • Giffgaff (O2 MVNO) - 41.0
  • Vodafone UK - 49.6.3
  • Virgin Mobile (EE MVNO) - 39.5
  • Lebara (Vodafone MVNO) - 50.0
Spain

  • Orange ES - 50.0
Other
  • Docomo - 32.5.10
  • AlwaysOnline -
 
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contacos said:
Instead of fixing my battery, this BS has returned. Lost 12% in 6 hours of sleep with Find My and Home randomly popping up throughout the night.

My phone was on airplane mode with location services completely off and I don’t use any location based home features either
Click to expand...
Energy can neither be created nor destroyed. Apple are using your battery to fix other people's battery drain. Thank you for your service.
 
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To those of you fighting Error 4000.

The latest iTunes is broken. The 12.12.3.5 from March 9, 2022.

You need to uninstall and download the 12.12.2.2 from October 29, 2021 instead. Then all should work just fine.

Took me several hours to figure that out…
 
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sbailey4 said:
Hmm go take a look at the 15.4 thread. Discussed at length there but some prefer full install over OTA and swear by it working better than an OTA update.
Click to expand...

Myself and a few others on here, are currently testing something out for Craig F on this exact subject, as I’ve been reassured both methods are identical to each other:

“When you OTA, the patching process results in a binary-identical OS volume to the one installed via ISPW — the system uses a “cryptographic seal” that actually ensures that the system won’t even boot if there’s any difference” - Craig F

Yet, we are seeing different results on devices straight after using the OTA and IPSW update methods.

Will hopefully be able to put this debate to bed soon, once Craig sees are findings. Will post back on the most current iOS forum when we know 👍🏼.
 
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I have encountered a new bug in iOS 15.4 and also happens in iOS 15.4.1, when I am doing a Recovery Mode Restore and then restore from encrypted backup from my Mac computer. The issue is that iOS gets stuck on the Enter Passcode screen and won’t proceed any further no matter how long I wait.

Steps:
  1. Connect iPhone to Mac computer using wired Lightning connection.
  2. Do an encrypted backup from macOS Finder of my iPhone.
  3. Restart iPhone in Recovery Mode and select Restore from macOS Finder.
  4. Once Restore mode completes and my iPhone restarts, select restore from encrypted backup on my Mac computer.
  5. Restore of encrypted backup completes and my iPhone restarts.
  6. I go through the steps after the restart such as setup Face ID, login to my Apple ID, etc.
  7. This is where the problem happens, I see the Location Services screen briefly displayed where it asks if I want to enable Location Services. I am not given the chance to select anything on that screen because immediately after showing me the Location Services screen, I see the Enter My Passcode screen. I enter my passcode and it shows a spinning progress wheel in the upper right hand corner. It never goes any further than that screen.
What is happening is the Location Services screen is still waiting on me to make a selection, but I can’t because the Enter Passcode screen is blocking the Location Services screen and hence I am stuck at the Enter Passcode screen. The only way to resolve this is for me to force a restart of my iPhone. Once I do that, it shows me the Restore Complete screen and I am able to have access to my iPhone normally.
 
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