InternalUI Builds

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This article discusses software internally used by Apple.

Acquiring a copy without Apple's consent is illegal and may result in being scammed.
Engaging in illegal activity is not condoned. This information is provided for educational purposes only.

This is a list of known Internal UI builds. These builds are versions of iOS used for testing and debugging different features before a decision is made whether it will release to the public.

What are Internal UI builds?

Internal UI builds are internal versions of iOS, watchOS, iPadOS and tvOS that have features that aren't in release builds. These builds are for internal use within Apple and are often found on PrePVT Prototypes. Internal UI builds often have experimental features and internal apps.

What is Desense?

Desense is a slimmed down version of Internal UI, that are used to do quality control. These builds have less internal-specific apps installed, around 2 full pages whereas regular Internal UI builds often have 3 or more pages of internal apps. Additionally, these builds may contain diags.

Screenshots from Internal UI builds

iPhones

iPhone 3GS

Version Build Codename Baseband Comments
3.0 7A187a Krikwood? ? From @1nsane_Dev On Twitter.

iPhone 4

Version Build Codename Baseband Comments
4.0 8A216 Apex? ? -

iPhone 4S

Version Build Codename Baseband Comments
5.0 9A2306f TellurideNanshan Trek-1.0.00 From @yrh04e on Twitter.
5.0 9A334 Telluride? ? -

iPhone 5

Version Build Codename Baseband Comments
6.0.1 10A525 Sundance? ? Referenced by an Internal OTA Update.
7.0 11A465 Innsbruck ? From @URedditor On Twitter.

iPhone 5s

Version Build Codename Baseband Comments
7.0.1 11A470a Innsbruck ? From @URedditor On Twitter.

iPhone 6

Version Build Codename Baseband Comments
10.0 14A149 Whitetail ? -

iPhone 6 Plus

Version Build Codename Baseband Comments
11.0.2 15C50 Cinar ? From @andreyauxenfers on Twitter.

iPhone 6s Plus

Version Build Codename Baseband Comments
11.0.2 15C50 Cinar ? From @andreyauxenfers on Twitter.

iPhone 7

Version Build Codename Baseband Comments
13.0 17A508 Yukon 4.03.01 From @CollectorApple On Twitter.

iPhone 8

Version Build Codename Baseband Comments
13.0 17A508 Yukon 4.03.01 From @CollectorApple On Twitter.

iPhone X

Version Build Codename Baseband Comment
12.1.1 16C49 PeaceC? ? From @andreyauxenfers on twitter.
13.0 17A512 Yukon -
17A571 YukonPre -
13.3 17C54 YukonC -
13.4 17E192 YukonE? -

iPhone XS

Version Build Codename Baseband Comments
12.1 16B92 PeaceB ? -

iPhone XS Max

Version Build Codename Baseband Comments
13.0 17A3457l Yukon? ? From @BenGeskin on Twitter.
13.2 17B45a YukonB 2.02.01 From @iarchiveml on Twitter.

iPhone 11 Pro Max

Version Build Codename Baseband Comments
13.4 17E186 YukonE ? -

iPhone 11

Version Build Codename Baseband Comments
14.0 18A188 Azul 1.05.14 From @choco_bit On Twitter.

iPhone 12 mini

Verison Build Codename Baseband Comments
14.1 18A8359a AzulHW? ? This build was discovered running on three iPhone 12 mini prototypes purchased from eBay. Notably, they boot to a strange NonUI-themed passcode screen. From @FileAnAardvark on Twitter

iPhone 12 Pro

Verison Build Codename Baseband Comments
14.3 18C57 AzulC ? -

iPhone 12 Pro Max

Verison Build Codename Baseband Comments
14.5 18E153x AzulE ? -

iPads

iPad 1

Version Build Codename Baseband Comments
5.0 9A269 Telluride? ? From @DongleBookPro On Twitter.

iPad 2

Version Build Codename Baseband Comments
7.0.4 11B554a InnsbruckTaos ? -

iPad Mini 4

Version Build Codename Baseband Comments
8.3 12E61520g Stowe? ? From @JinStore On Twitter.
12.2 16E227 PeaceE? ? From @Info_iosx On Twitter.

iPod Touches

iPod Touch (4th generation)

Version Build Codename Comments
4.1 8B117 Baker From @DongleBookPro On Twitter.