iOS 26.6 Beta 2 ― Bug Fixes, Changes, and Improvements

[Banglazed]

iOS 26.6 Beta 2​

Release Date ― June 15, 2026
Build Number ― 23G5043d
Darwin Kernel Version ―

iOS 26.6 Beta 2 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: 1.70.00
• iPhone Air: 2.05.04
• iPhone 16 series: 2.70.00
• iPhone 16e: 2.02.03
• iPhone 15 series: 3.50.08
• iPhone 14 series: 4.51.04
• 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 - 70.0

Belgium

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

Brazil (info updated 26.6b1, last change in 26.5RC)

• Claro Brasil - 70.0
• Vivo - 70.0
• 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 - 70.0
• Free - 70.0
• SFR -

Germany

• Vodafone.de - 70.0 and RCS enabled
• Telekom.de - 70.1 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 - 70.0
• 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 - 70.0
• Philippines Globe (iPad) - 38.0
• Philippines Smart - 70.0
• 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 - 70.0
• DIGI ES - 54.8.4
• Vodafone ES - 54.8.8
• Movistar - 70.0
• Yoigo - 70.0

Sweden

• Comviq -
• Tre - 31.0

Switzerland

• Salt - 58.0
• Sunrise - 70.0
• Swisscom - 70.0

Turkey

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

United Kingdom

• BT-UK (EE MVNO) -
• EE - 70.0
• Giffgaff (O2 MVNO) -
• iD Mobile (Three MVNO) - 70
• 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 - 70.0
• Boost - 57.0
• Cricket - 60.5.5
• FirstNet - 55.0
• FirstNet (iPad) - 41.7.6
• Metro (TMO MVNO) - 70.0
• Spectrum (VZW MVNO) - 70.0
• 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) - 70.0
• 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

 

[Al Ferguson]

My iPhone 16Pro has a Modem Firmware of 2.70

 

[50thanniversary19762026]

Is public beta out too?

 

[gtmead09]

Wow quiet in here, did iOS 27 come out or something lol 😎

 

[GoofyCyborg]

Is public beta out too?

Nope!

 

[James6s]

How is 26.6 running compared to 26.5.1 which my Air is currently running?

 

[50thanniversary19762026]

Nope!

Signed up for free developer content, then when iOS 27 stable in August can do that .
But for now updated to beta 2 🙂

 

[sbailey4]

iOS 26.6 Beta 2​

Release Date ― June 15, 2026
Build Number ― 23G5043d
Darwin Kernel Version ―

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

Spoiler: Modem Firmware

• iPhone 17 series: 1.70.00
• 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: 4.51.04
• 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 - 70.0

Belgium

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

Brazil (info updated 26.6b1, last change in 26.5RC)

• Claro Brasil - 70.0
• Vivo - 70.0
• 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 - 70.0
• Free - 70.0
• SFR -

Germany

• Vodafone.de - 70.0 and RCS enabled
• Telekom.de - 70.1 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 - 70.0
• 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 - 70.0
• Philippines Globe (iPad) - 38.0
• Philippines Smart - 70.0
• 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 - 70.0
• DIGI ES - 54.8.4
• Vodafone ES - 54.8.8
• Movistar - 70.0
• Yoigo - 70.0

Sweden

• Comviq -
• Tre - 31.0

Switzerland

• Salt - 58.0
• Sunrise - 70.0
• Swisscom - 70.0

Turkey

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

United Kingdom

• BT-UK (EE MVNO) -
• EE - 70.0
• Giffgaff (O2 MVNO) -
• iD Mobile (Three MVNO) - 70
• 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 - 70.0
• Boost - 57.0
• Cricket - 60.5.5
• FirstNet - 55.0
• FirstNet (iPad) - 41.7.6
• Metro (TMO MVNO) - 70.0
• Spectrum (VZW MVNO) - 70.0
• 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) - 70.0
• 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

Release notes link needs to be updated both text and URL. The post is not a wiki currently so cannot edit.

 

[hugierogers]

Where is the full bug list and the fixed items? I am still waiting for a fix for the lock screen shutting off after 10 seconds, which isn't enough time to read notifications. I won't be updating any more Apple devices until this is fixed. Reported to Apple 12 times now. I am so pissed off with this.

 

[Artemiz]

Wow quiet in here, did iOS 27 come out or something lol 😎

Yes it did. And Apple forced me to update to iOS 27 as well.

 

[sbailey4]

Guess nobody sticking around with 26. 27.0 seems to be really good (and new) so everyone doing that instead. Guess will have to install and see how it goes. I suspect it will be a more stable 26.5.2 for us not iP17 users.

 

[sbailey4]

My iPhone 16Pro has a Modem Firmware of 2.70

Updated the Wiki.

 

[TheByteSmasher]

Where is the full bug list and the fixed items? I am still waiting for a fix for the lock screen shutting off after 10 seconds, which isn't enough time to read notifications. I won't be updating any more Apple devices until this is fixed. Reported to Apple 12 times now. I am so pissed off with this.

Just unlock, then pull down notification screen 🤷🏻‍♂️

 

[pw5a29]

How is 26.6 running compared to 26.5.1 which my Air is currently running?

no difference. Give me a blind test of the two and I wouldn't notice.

 

[James6s]

FWIW. Watching Zollotech’s latest video, it seems iOS 26.6 is better overall vs 26.5 & 26.5.1 regarding smoothness and bugs, also the highest benchmark scores he’s had on the 17 Pro devices.

It’s all about iOS 27 now but I’m not ready to install such an early beta of a new software version. No doubt there’ll be a few steps forward then one step back as the new 27 betas get released.

 

[50thanniversary19762026]

HELP . HOW DOES ONE REMOVE APPLE ID FROM APPLE DEVELOPMENT PROGRAM SO THE SETTINGS OPTION DOESNT SHOW UP

 

[Madonepro]

HELP . HOW DOES ONE REMOVE APPLE ID FROM APPLE DEVELOPMENT PROGRAM SO THE SETTINGS OPTION DOESNT SHOW UP

You just go into Settings/General/Software Update and turn off beta updates. You can also go to Beta Unenrol or read the Beta Unenrolled FAQ's

 

[roncron]

FWIW. Watching Zollotech’s latest video, it seems iOS 26.6 is better overall vs 26.5 & 26.5.1 regarding smoothness and bugs, also the highest benchmark scores he’s had on the 17 Pro devices.

It’s all about iOS 27 now but I’m not ready to install such an early beta of a new software version. No doubt there’ll be a few steps forward then one step back as the new 27 betas get released.

I saw it too. He bases his assessment on his own experience plus that of viewers who comment on their experience in response to his prompts. I like Brandon Butch better, but Brandon doesn't give much information about the performance of non-major updates like Zollo does.

Based on Zollo's reports about 26.6, I installed beta 2 (coming from 26.5.1). It's only been a day, but so far it's better than 26.5.1 and earlier in my experience so far. 26.6 b1 seemed to also be better than 26.5.1 and earlier judging by most user responses to Zollo's query.

I know iOS 27 is the exciting release, but like many folks I won't be installing until a few more betas, so my focus remains on updates to iOS 26. I'm pretty happy about the performance improvements 26.6 appears to bring.

 

[James6s]

I saw it too. He bases his assessment on his own experience plus that of viewers who comment on their experience in response to his prompts. I like Brandon Butch better, but Brandon doesn't give much information about the performance of non-major updates like Zollo does.

Based on Zollo's reports about 26.6, I installed beta 2 (coming from 26.5.1). It's only been a day, but so far it's better than 26.5.1 and earlier in my experience so far. 26.6 b1 seemed to also be better than 26.5.1 and earlier judging by most user responses to Zollo's query.

I know iOS 27 is the exciting release, but like many folks I won't be installing until a few more betas, so my focus remains on updates to iOS 26. I'm pretty happy about the performance improvements 26.6 appears to bring.

That’s good to know your experience going from 26.5.1 to 26.6, what device are you using? Too early to pass judgment on battery life?

Looking forward to the release of 26.6! Won’t be making the jump to iOS 27 just yet.

 

[cigz]

That’s good to know your experience going from 26.5.1 to 26.6, what device are you using? Too early to pass judgment on battery life?

Looking forward to the release of 26.6! Won’t be making the jump to iOS 27 just yet.

I updated to 26.6 B2 from 26.5.1 on my 17 Pro and I'm not seeing much improvement, maybe it's slightly smoother but random stutters are still happening. But to be fair, for me, 26.5.1 wasn't that bad in terms of speed and smoothness, just these random stutters when unlocking phone, swiping on Home Screen and in various 3rd party apps.

When it comes to battery life, I actually updated hoping it'd fix atrocious battery life on 26.5.1 (even though it's a beta) and I think it's too early too tell but today it drained more than 26.5.1. I'll wait 1-2 more days for final judgment.

 

[Banglazed]

Public beta is out

 

[iGeek2019]

YMMV, but the second beta just released seems much kinder on my 17 Pro battery life – noticed in the first beta is was draining quickly with light-to-moderate usage.

 

[winxmac]

I saw it too. He bases his assessment on his own experience plus that of viewers who comment on their experience in response to his prompts. I like Brandon Butch better, but Brandon doesn't give much information about the performance of non-major updates like Zollo does.

Based on Zollo's reports about 26.6, I installed beta 2 (coming from 26.5.1). It's only been a day, but so far it's better than 26.5.1 and earlier in my experience so far. 26.6 b1 seemed to also be better than 26.5.1 and earlier judging by most user responses to Zollo's query.

I know iOS 27 is the exciting release, but like many folks I won't be installing until a few more betas, so my focus remains on updates to iOS 26. I'm pretty happy about the performance improvements 26.6 appears to bring.

I wonder why EverythingApplePro no longer reviews beta builds. I believe he is the most comprehensive when it comes to finding changes between beta releases and now others seem to have taken his place. His latest video is about the iPhone 17 series and iPhone Air drop tests.

 

[gwang73]

I wonder why EverythingApplePro no longer reviews beta builds. I believe he is the most comprehensive when it comes to finding changes between beta releases and now others seem to have taken his place. His latest video is about the iPhone 17 series and iPhone Air drop tests.

He's too busy making and selling cases now.

 

[ValerieDurden]

FWIW. Watching Zollotech’s latest video, it seems iOS 26.6 is better overall vs 26.5 & 26.5.1 regarding smoothness and bugs, also the highest benchmark scores he’s had on the 17 Pro devices.

It’s all about iOS 27 now but I’m not ready to install such an early beta of a new software version. No doubt there’ll be a few steps forward then one step back as the new 27 betas get released.

26.5.1 has been the smoothest iOS 26 for me to date, it’s mostly enjoyable now.