iOS 12.5.8 ― Bug Fixes, Changes, and Improvements

[Banglazed]

iOS 12.5.8

Release Date ― January 26, 2026
Build Number ― 16H88
Darwin Kernel Version ―

This update provides important security updates and is recommended for all users.

For information on the security content of Apple software updates, please visit this website: https://support.apple.com/kb/HT201222

New Features & Changes
New Issues
Remaining Issues
Resolved Issues
Additional Notes

• iOS Release Notes
• iOS Beta Release Notes
• Deleting built-in app can affect system functionalities and Settings app. To restore affected functionalities, download the deleted built-in app back to your device.

Spoiler: Modem Firmware

• Intel iPhone XR/XS/Max: 1.06.02
• Qualcomm iPhone 8/8 Plus/X: 3.70.01
• Intel iPhone 8/8 Plus/X: 2.03.06
• Qualcomm iPhone 7/7 Plus: 5.60.01
• Intel iPhone 7/7 Plus: 3.03.04
• iPhone 6/6 Plus/SE: 7.70.01
• iPhone 6S/6S Plus: 5.70.01
• iPhone 5S: 10.80.02
• Qualcomm iPad Pro 9.7: 5.60.01

Spoiler: Carrier Version

United States

• Verizon - 36.0.1
• Visible (MVNO Verizon) 34.0
• Verizon (iPad) - 35.0
• T-Mobile - 36.0.2
• T-Mobile (iPad) - 36.0
• AT&T - 36.0.2
• Cricket - 35.5.3
• MetroPCS -
• U.S. Cellular - 32.5.9
• Sprint - 36.1
• TracFone/Straight Talk/Walmart Family Mobile - 36.1
• Xfinity Mobile 36.0.1

United Kingdom

• EE - 36.0.1
• BT-UK MVNO on EE- 36.0
• Three - 36.0
• O2-UK - 36.0
• Vodafone UK - 36.0
• Virgin Mobile MVNO on EE- 34.0

Belgium

• Orange B - 32.5.7
• BASE - 33.0

Canada

• Videotron -
• Rogers - 36.0.1
• Fido - 35.5
• Bell - 35.0
• Telus - 32.5.12
• Freedom Mobile - 34.0

France

• Orange France - 31.5.1
• Orange Morocco - 31.5

Germany

• O2-DE - 36.0
• Vodafone.de - 36.0
• Telekom.de - 36.0

Netherlands

• KPN -

Southeast Asia

• Singapore Singtel -
• Philippines Globe - 36.0
• Philippines Globe (iPad) - 36.0
• Philippines Smart - 36.1
• Thailand AIS -
• Malaysia Umobile - 33.0
• Malaysia Maxis -33.0
• Malaysia Digi -
• Malaysia celcom -
• Hong Kong - 32.0

Sweden

• Comviq -
• Tre - 31.0

Switzerland

• Salt - 35.5
• Sunrise - 36.01
• Swisscom - 35.0

Ireland

• Eir - 33.5

Australia

• Optus - 32.0
• Telstra - 36.0

Turkey

• Turkcell (Lifecell) - 32.0
• Vodafone TR - 32.0
• Turk Telekom - 32.0

Poland

• T-Mobile -
• Orange - 32.0
• Play - 31.0

India

• Airtel - 35.0
• Jio - 36.0
• Vodafone Idea - 35.5

Mexico

• Mexico - Telcel - 35.0

Guatemala

• TIGO GT -34.0

OtherDocomo - 32.5.10

• AlwaysOnline -

 

[MacMorrison]

Thanks!

"This update extends the certificate required by features such as iMessage, FaceTime, and device activation to continue working after January 2027."

 

[Astuces iOS]

This is a crazy update !

 

[commander.data]

Thanks!

"This update extends the certificate required by features such as iMessage, FaceTime, and device activation to continue working after January 2027."

It's good that Apple decided to continue allowing devices back to the iPhone 5s to continue to get past device activation but I wonder what this means for even older model devices past January 2027?

For example, I still have a working iPhone 5c and iPhone 4s sitting around as novelty/collectors items. Are their certificates also going to expire soon such that if a reset or restore is performed after January 2027 they won't be able to be activated anymore and will be bricked? I can understand no longer supporting Apple services on really old devices, but hopefully there will be equivalent updates for all older Apple devices to allow basic device activation to continue.

 

[BeauGiles]

Telstra (Australia) is reporting that the 12.5.8 update has been paused.

We've identified an issue with some older Apple devices connecting to our network

We're currently investigating an issue making and receiving calls, including calls to 000, on older Apple iPhone devices.

www.telstra.com.au

Incoming 12.5.9 update any moment now....

 

[Andy_2341]

This update is awesome. I still sometimes use an old 5s and like to respond to iMessages and take some FaceTime calls when I’m in a different part of the house without my main iPhone.

 

[Homme]

It's good that Apple decided to continue allowing devices back to the iPhone 5s to continue to get past device activation but I wonder what this means for even older model devices past January 2027?

For example, I still have a working iPhone 5c and iPhone 4s sitting around as novelty/collectors items. Are their certificates also going to expire soon such that if a reset or restore is performed after January 2027 they won't be able to be activated anymore and will be bricked? I can understand no longer supporting Apple services on really old devices, but hopefully there will be equivalent updates for all older Apple devices to allow basic device activation to continue.

It means that FaceTime and iMessage after January 2027 won’t work for 32bit devices hence why the update is there for 64bit devices