iOS 26.4 Beta 4 ― Bug Fixes, Changes, and Improvements

[Banglazed]

iOS 26.4 Beta 4​

Release Date ― March 9, 2026
Build Number ― 23E5234a
Darwin Kernel Version ― 25.4.0: Fri Mar 6 00:10:23 PST 2026; root:xnu-12377.102.10~4

iOS 26.4 Beta Release Notes

New Issues
Remaining Issues
Resolved Issues
Features
Additional Notes

• Developers and testers can report bugs using the Feedback app. If you put your settings back on “None” for the betas, you can still open the app by entering the following URL in Safari:
  

  applefeedback://

• iOS 26 Overview
• iOS 26 Press Release
• iOS 26 Release Notes
• iOS Beta Release Notes
• iOS Security Updates

Spoiler: Modem Firmware

• iPhone 17 series: 1.55.04
• iPhone Air: 2.02.03
• iPhone 16 series: 2.51.06
• iPhone 16e: 2.02.03
• iPhone 15 series: 3.50.07
• iPhone 14 series: 4.40.01
• iPhone 13 series and iPhone SE (3rd gen): 5.40.01
• iPhone 12 series: 5.10.01
• iPhone 11 series, iPhone SE (2nd gen) and iPad Air (Cellular, 4th gen): 6.50.00

Spoiler: Carrier Version

Australia

• Optus - 64.5.8
• Telstra - 64.5.13
• Vodafone AU - 66.5.1

Belgium

• BASE - 33.0
• Orange B - 58
• Proximus - 45.0
• Telenet - 66.0

Brazil (info updated 26.4b4, last change in 26.4b2)

• Claro Brasil - 69.0
• Vivo - 69.0
• TIM -
• Oi - declared bankrupt in Nov 10th 2025

Canada

• Bell - 62.8
• Fido - 56.0
• Fizz - 53.0
• Freedom/Shaw Mobile - 54.8.6
• Mint Mobile - 58.0
• Public Mobile - 54.8.4
• Rogers - 69.0
• Telus - 54.8.8
• Videotron - 53.0
• Virgin Mobile - 50.0

Denmark

• 3 DK - 46.7.11
• TDC 68.5.1
• Norlys 68.5.1

Finland

• DNA - 58.5.7

France

• Bouygues Telecom - 40.0
• Orange France - 63.0
• Free - 68.0
• SFR -

Germany

• Vodafone.de - 69.0 RCS enabled, not encrypted
• Telekom.de - 67.5.3 and RCS enabled
• o2-de - 61.6.1 RCS enabled

Greece:

• Cosmote - 38.0

Guatemala

• TIGO GT - 49.0

India

• Airtel - 58.5.18
• Jio - 58.5.18 (iPhone) and 58.5.18 (iPad)
• Vi India (Vodafone Idea) - 58.5

Ireland

• Eir - 33.5
• Vodafone IE - 38.0

Mexico

• AT&T - 57.0
• Telcel - 57.6

Morocco

• Orange - 50.0

Netherlands

• KPN - 61.0
• Vodafone NL - 45.0
• Odido -

Poland

• T-Mobile - 64.5.4
• Orange - 64.5.2
• Play - 61.0
• Plus - 61.0

Portugal

• Vodafone P - 40.0

Romania

• Orange RO - 55.0

Slovakia

• Orange SK - 57.6

Southeast Asia

• Singapore Singtel -
• Philippines Globe - 68.0
• Philippines Globe (iPad) - 38.0
• Philippines Smart - 68.0
• Thailand AIS - 53.0
• Thailand DTAC - 53.0
• Malaysia Umobile - 33.0
• Malaysia Maxis -33.0
• Malaysia Digi -
• Malaysia celcom -
• Hong Kong - 32.0
• Taiwan -

Spain

• Orange ES - 69.0
• DIGI ES - 54.8.4
• Vodafone ES - 69.0
• Movistar - 69.0
• Yoigo - 69.0

Sweden

• Comviq -
• Tre - 31.0

Switzerland

• Salt - 58.0
• Sunrise - 69.0
• Swisscom - 68.0

Turkey

• Turkcell (Lifecell) - 36.5.5
• Vodafone TR - 32.0
• Turk Telekom - 32.0

United Kingdom

• BT-UK (EE MVNO) - 69.0
• EE - 69.0
• Giffgaff (O2 MVNO) -
• iD Mobile (Three MVNO) - 68.0
• Lebara (Vodafone MVNO) - 67.5.1
• Lyca (EE MVNO) - 69.0
• Mozillion (EE MVNO) - 69.0
• O2-UK - 68.5.1
• Sky (O2 MVNO) - 68.5.1
• Three - 68.0
• Virgin Mobile (O2 MVNO) -
• Vodafone UK - 64.5.5

United States

• AT&T - 68.5.1
• Boost - 57.0
• Cricket - 60.5.5
• FirstNet - 55.0
• FirstNet (iPad) - 41.7.6
• Metro (TMO MVNO) - 69.0
• Spectrum (VZW MVNO) - 68.0
• T-Mobile - 68.0
• TracFone/Straight Talk/Walmart Family Mobile - 63.5
• U.S. Cellular - 46.7.24
• Ultra/Mint Mobile (TMO MVNO) - 68.0
• Verizon - 68.5.5
• Visible (VZW MVNO) - 68.0
• Xfinity Mobile - 67.5.1

Other

• Docomo - 32.5.10
• AlwaysOnline -

Historical beta release chart

iOS Version History Chart

iOS version history chart

www.thinkybits.com

 

[Broken Hope]

11 builds higher is quite a lot.

 

[SumYoungGai]

IPSWs up

 

[Simacca]

An early release. Nice

 

[jpsmith76]

Still waiting for my download to finish, but Brandon Butch says new Emoji are visible.

 

[dannyyankou]

New emojis 🫪

 

[cflasche]

An early release. Nice

Normal release time for the states (daylight savings time). 1000 PT, 1200 CT, 1300 ET.

 

[LutzRFrank]

An early release. Nice

Daylight saving time in US

 

[Simacca]

Normal release time for the states (daylight savings time). 1000 PT, 1200 CT, 1300 ET.

Ah ok. Uk here.

 

[Simacca]

Daylight saving time in US

That’s why then. Uk here.

 

[Broken Hope]

Ah ok. Uk here.

UK catches up end of the month.

 

[Broken Hope]

RCS encryption options removed, so clearly getting ready for release since encryption isn’t being released with 26.4.

 

[mppn]

Anyone has issues with reminders past due not showing up as a badge on the reminders app icon? Notifications fire up, I get the banner and lock screen, haptics and all, but it does not show up as a badge. The badge shows up randomly many hours after the reminder is past due. I can force it to appear by triggering the "Include Due Today" on and off in reminders settings, and that brings the badge properly with the proper count, but it's only happening for reminders actually past due at the moment of triggering the settings, not for the future reminders.

I heavily rely on this badge to know if I need to check the reminders for past due tasks. This bug has been present since beta 1 and my original feedback (from beta 1) shows no other similar reports. Anyone?

 

[Brettka7]

Wishful thinking, but any news for this setting?

 

[jacklroberts]

Is the age verification still there for uk users?, if so what can you use?

 

[Chinoo]

Anyone has issues with reminders past due not showing up as a badge on the reminders app icon? Notifications fire up, I get the banner and lock screen, haptics and all, but it does not show up as a badge. The badge shows up randomly many hours after the reminder is past due. I can force it to appear by triggering the "Include Due Today" on and off in reminders settings, and that brings the badge properly with the proper count, but it's only happening for reminders actually past due at the moment of triggering the settings, not for the future reminders.

I heavily rely on this badge to know if I need to check the reminders for past due tasks. This bug has been present since beta 1 and my original feedback (from beta 1) shows no other similar reports. Anyone?

Is working fine for me

 

[mcvaughan]

11 builds higher is quite a lot.

Big update. 13GB on my 17 Pro.

 

[Cpives]

Hope to be able to install this - CarPlay and findmy is essential to my work so I can’t be without it.

 

[Simacca]

Big update. 13GB on my 17 Pro.

Was about 1.8gb on my 16pro.

 

[Donga120]

Is the age verification still there for uk users?, if so what can you use?

Still there unfortunately…

 

[mppn]

Is working fine for me

And that badge shows up as soon as the reminder is past due date/time?
The weird thing about this is the issues is also happening on my mac (also on the beta, and happening since beta 1 there also). So I'm questioning if its an iCloud issue or something else entirely

 

[klasma]

New emojis 🫪

I thought there already was a “square” emoji.

 

[Dirty Mac]

996 MB on my 15 PM

 

[Chinoo]

And that badge shows up as soon as the reminder is past due date/time?
The weird thing about this is the issues is also happening on my mac (also on the beta, and happening since beta 1 there also). So I'm questioning if its an iCloud issue or something else entirely

I created a reminder with a past due time and automatically show up the badge.

 

[cigz]

View attachment 2611507

Wishful thinking, but any news for this setting?

Allegedly they changed it to this: