iOS 26.5 Beta 4 ― Bug Fixes, Changes, and Improvements

[Banglazed]

iOS 26.5 Beta 4​

Release Date ― April 27, 2026
Build Number ― 23F5069b
Darwin Kernel Version ― 25.5.0: Thu Apr 23 21:28:20 PDT 2026; root:xnu-12377.122.4~2/RELEASE_ARM64_T8140

iOS 26.5 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: 1.60.02
• iPhone Air: 2.05.04
• iPhone 16 series: 2.60.00
• iPhone 16e: 2.02.03
• iPhone 15 series: 3.50.08
• iPhone 14 series: 4.40.01
• iPhone 13 series and iPhone SE (3rd gen): 5.51.02
• 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 26.4, 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 - 70.0
• Telus - 54.8.8
• Videotron - 53.0
• Virgin Mobile - 50.0

Denmark

• 3 DK - 46.7.11
• TDC 69.5
• Norlys 69.5

Finland

• DNA - 58.5.7

France

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

Germany

• Vodafone.de - 69.0 and RCS enabled
• Telekom.de - 69.1 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 - 69.0 (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 - 68.0
• Vodafone NL - 68.0
• Odido - 68.0

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 - 54.8.8
• Movistar - 67.5.1
• 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) -
• EE - 69.5
• Giffgaff (O2 MVNO) -
• iD Mobile (Three MVNO) - 69.5
• Lebara (Vodafone MVNO) - 67.5.1
• Lyca (EE MVNO) -
• Mozillion (EE MVNO) - 67.0
• O2-UK - 69.5.2
• Sky (O2 MVNO) - 69.5.1
• Three - 69.0
• Virgin Mobile (O2 MVNO) -
• Vodafone UK - 64.5.5
• Smarty (Three MVNO) - v70.0

United States

• AT&T - 69.0
• Boost - 57.0
• Cricket - 60.5.5
• FirstNet - 55.0
• FirstNet (iPad) - 41.7.6
• Metro (TMO MVNO) - 70.0
• Spectrum (VZW MVNO) - 69.0
• T-Mobile - 70.0
• TracFone/Straight Talk/Walmart Family Mobile - 63.5
• U.S. Cellular - 46.7.24
• Ultra/Mint Mobile (TMO MVNO) - 64.5.16
• Verizon - 70.0
• Visible (VZW MVNO) - 69.0
• 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

 

[cflasche]

iPhone 17 Pro Max said 19.1GB for download size for this, but downloaded in 2 minutes. File size bug must not be fixed yet, as file sizes have been fine so far for the 26.5 betas up to this point.

 

[ibookemo]

What's the build number?

 

[Banglazed]

What's the build number?

23F5069b

 

[bricktop_at]

IPSW is up - who dares? :-D

 

[Reeneman]

Back on that beta train. Hello guys 🙂
Let’s see. Wasn’t happy with 26.4.1 and 26.4.2 got a strange icon reload pretty often. Let’s see how 26.5 is working.

 

[Banglazed]

IPSW is up

 

[Broken Hope]

Doesn't mean apple have actually released the encryption keys for it, could end up bricking your device like the past couple of weeks.

 

[Simacca]

14.24 gig in my 16pro. One of the biggest yet. Although I’m guessing it’s an error of some sort.

 

[Banglazed]

Updated without any issue using IPSW

 

[Kylo83]

Is there any changes at all

 

[yukari]

Updated without any issue using IPSW

They must've finally gotten the notes from the last two IPSW updates bricking phones.

 

[gigapocket1]

I wonder if Apple Journal is fixed... only been borked since iOS 27 release

 

[Simacca]

I wonder if Apple Journal is fixed... only been borked since iOS 27 release

Are you from the future?

 

[MD0600]

I’m hesitant to upgrade as I’m on the public beta and the battery life has been amazing. I remember a previous situation similar where one beta gave great battery and then the next was back to being crap.

 

[Macx69]

It’s running well on my 16P for now 🤞

 

[Artemiz]

I’m hesitant to upgrade as I’m on the public beta and the battery life has been amazing. I remember a previous situation similar where one beta gave great battery and then the next was back to being crap.

You do realize it’s a beta and you’d have to update to the public release anyway right? So one beta might give you a better battery life but you can’t be certain of how public release would turn out.

 

[mzanker]

Is there any changes at all

No - they've released a new beta with a new build number which is completely identical to the last beta 😉

 

[Eksoccer99]

iPhone 17 Pro Max said 19.1GB for download size for this, but downloaded in 2 minutes. File size bug must not be fixed yet, as file sizes have been fine so far for the 26.5 betas up to this point.

Same phone. Mines 13gb

 

[falkirk81]

iPhone 15 modem now v3.50.08
Carrier version for Smarty UK is now v70.0 (added to list of UK operators as was missing)

 

[Broken Hope]

Public beta out.

 

[mofoliar]

3.35GB on IP17 pro

 

[gardiboy]

home screen stutter fixed?

 

[Banglazed]

Public beta is out

 

[iOSBry]

home screen stutter fixed?

It’s much better but same as beta three where you can reproduce some Home Screen stutters.

One scenario is swiping up to force close an app via the app switcher and then tapping the Home Screen will occasionally result in some decent stutters.