Apple Releases iOS and iPadOS 13.3.1 With Toggle for Turning Off U1 Chip in Latest iPhones

Apple today released iOS and iPadOS 13.3.1, minor updates to the iOS 13 operating system. iOS and iPadOS 13.3.1 come over a month after the release of iOS/iPadOS 13.3, which brought Communication Limits for Screen Time.

The iOS and iPadOS 13.3.1 updates are available on all eligible devices over-the-air in the Settings app. To access the updates, go to Settings > General > Software Update. Apple has also released an iOS 12.4.5 update for older devices.

ryanscoolios13thumbnail
iOS 13.3.1 includes a "Networking & Wireless" toggle that turns off the U1 Ultra Wideband chip in the latest iPhones. The feature, located in the Privacy > Location Services section of the Settings app, turns off location for Bluetooth, Wi-Fi, and Ultra Wideband.

Apple added this location toggle after it was discovered that the iPhone 11, 11 Pro, and 11 Pro Max continue to track user location even when location services options are disabled. This is because there are international regulatory requirements that mandate the U1 chip be disabled in certain locations.

The new toggle makes sure location tracking is off for the U1 chip at all times. Apple has also added a new "Play Again" button when replaying content that you've already watched in the TV app. The update also includes multiple bug fixes for issues that include a Communication Limits bug that allowed it to be bypassed, a problem with Mail that could prevent images from loading, an issue that could case push notifications to fail to be delivered, and more. Apple's full release notes for the update are below:

iOS 13.3.1 includes bug fixes and improvements. This update:
- Fixes an issue in Communication Limits that could allow a contact to be added without entering the Screen Time passcode
- Adds a setting to control the use of location services by the U1 Ultra Wideband chip
- Addresses an issue that could cause a momentary delay before editing a Deep Fusion photo taken on ‌iPhone 11‌ or ‌iPhone 11‌ Pro
- Resolves an issue with Mail that could cause remote images to load even when the “Load Remote Images” setting is disabled
- Fixes an issue that could cause multiple undo dialogs to appear in Mail
- Addresses an issue where FaceTime could use the rear facing ultra-wide camera instead of the wide camera
- Resolves an issue where push notifications could fail to be delivered over Wi-Fi
- Addresses a CarPlay issue that could cause distorted sound when making phone calls in certain vehicles
- Introduces support for Indian English Siri voices for HomePod

Apple also has separate release notes for iPadOS 13.3.1:

iPadOS 13.3.1 includes bug fixes and improvements. This update:
- Fixes an issue in Communication Limits that could allow a contact to be added without entering the Screen Time passcode
- Addresses an issue with Mail that could cause remote images to load even when the “Load Remote Images” setting is disabled
- Fixes an issue that could cause multiple undo dialogs to appear in Mail
- Resolves an issue where push notifications could fail to be delivered over Wi-Fi
- Introduces support for Indian English ‌Siri‌ voices for ‌HomePod‌

For more on the new features that Apple added to iOS with the launch of ‌iOS 13‌, make sure to check out our iOS 13 roundup.

Top Rated Comments

drlunanerd Avatar
16 months ago
In the UK we get an extra bug fix!

iOS 13.3.1 includes bug fixes and improvements. This update:

* Fixes an issue where O2 customers could experience intermittent network connectivity

For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/kb/HT201222
Score: 6 Votes (Like | Disagree)
wgaller Avatar
16 months ago
watch OS 6,1,2 as well.
Score: 5 Votes (Like | Disagree)
lkrupp Avatar
16 months ago

not seeing it
Apple is withholding it just from you.
Score: 5 Votes (Like | Disagree)
Morod Avatar
16 months ago
Also released today by Apple is iOS 12.4.5 for older iPads and other iToys. Thanks Apple!
Score: 4 Votes (Like | Disagree)
1204932 Avatar
16 months ago
Nice, but hopefully there's a lot more fixes than what's listed here :oops:
Score: 4 Votes (Like | Disagree)
zorinlynx Avatar
16 months ago

Also released today by Apple is iOS 12.4.5 for older iPads and other iToys. Thanks Apple!
This makes me very happy, because my mother, who uses an iPhone 6, was concerned that it wasn't going to be getting updates once iOS 13 came out.

Turns out it's still getting updates so she's going to stay secure with her old phone that she's still 100% happy with.

Go Apple!


Seems like its been a long time since an update has been posted, or is it just me?
Holiday season! iOS developers need time off too!
Score: 4 Votes (Like | Disagree)

Top Stories

Top Stories 57 Feature

Top Stories: Apple Event Next Tuesday, Mini-LED iPad Pro, iPhone Rumors

Saturday April 17, 2021 6:00 am PDT by
It feels like we've been waiting forever for new Apple products, but the wait is almost over as Apple has announced a media event for next Tuesday, so make sure to tune into MacRumors for full coverage of everything Apple announces. While that was the big news this week, we also got some new details on Apple's iPhone plans for 2022 and 2023 courtesy of analyst Ming-Chi Kuo, and we also saw...
flat imac 3d 3 teal

Reliable Leaker Hints Redesigned Colorful iMac to Debut at 'Spring Loaded' Event

Saturday April 17, 2021 4:43 am PDT by
Reliable leaker known as l0vetodream has hinted that Apple may debut its rumored redesigned and colorful iMac at its "Spring Loaded" event on Tuesday, April 20. In a tweet, the leaker posted an image of Apple's logo used for marketing the upcoming event and an image of the retro rainbow Apple logo alongside the colorful lineup of G3 iMacs. Apple leaker Jon Prosser previously reported that...
duan rui iphone 12 13 notch

New Images Show Smaller iPhone 13 Notch Compared to iPhone 12

Saturday April 17, 2021 11:38 pm PDT by
Leaker known as "DuanRui" has shared more images that could give us our best look yet at Apple's redesigned notch for the iPhone 13. The new pictures follow similar images shared by the leaker last week, but the latest shots include a comparison with the existing iPhone 12 notch. DuanRui posted three images on Twitter that apparently originate from Weibo, although source details remain...
iPad Pro Feature Orange

Wedbush Analysts Say 'Spring Loaded' Event Will Debut New iPads With 'Modest Price Increase,' Along With 'a Few Surprises'

Monday April 19, 2021 6:37 am PDT by
Apple is planning to launch a new entry-level iPad, iPad mini, and iPad Pro at its "Spring Loaded" event tomorrow, along with "a few surprises," according to Wedbush analysts. In a new note to investors, seen by MacRumors, Wedbush analysts Daniel Ives and Strecker Backe explained that the iPad will be the main focus of Apple's "Spring Loaded" event, with new entry-level iPad, iPad mini, and ...
important battery message iphone 11

Some iPhone 11 Users Seeing Increased Battery Health Percentages After iOS 14.5 Recalibration Process

Friday April 16, 2021 6:32 am PDT by
In the sixth beta of iOS 14.5, Apple introduced a recalibration process for the battery health reporting system on the iPhone 11, iPhone 11 Pro, and iPhone 11 Pro Max to address inaccurate battery health estimates for some users. Apple said this process might take a few weeks to be completed, and now that two weeks have passed since the sixth beta of iOS 14.5 was released, some users are...
third gen Apple pencil leaked video

Video of Alleged Third-Generation Apple Pencil Leaks Ahead of Apple Event

Friday April 16, 2021 6:13 am PDT by
A video purporting to be of the third-generation Apple Pencil has today been shared online, showing a glossy finish that mirrors previous leaks. New ✏️ ready to 🚢 #AppleEvent @TommyBo50387266 pic.twitter.com/s4RCDwDi5M— 漢尼斯·拉斯納 🇨🇳 (@ileakeer) April 16, 2021 The brief video from Twitter account @ileakeer, spotted by 9to5Mac, shows an Apple Pencil with a glossy finish much like the...
iPad Pro

New 12.9-Inch iPad Pro Will Be 0.5mm Thicker to Accommodate Mini-LED Display

Monday April 19, 2021 11:30 am PDT by
The upcoming 12.9-inch iPad Pro will be thicker than the previous-generation version, likely due to the inclusion of the mini-LED display. We've heard several rumors about the change in thickness, and now leaked design images have confirmed it. A source that designs accessories for Apple devices sent MacRumors a series of photos that feature exact dimensions for the new iPad Pro models, and...
parler app

Apple Approves Parler to Return to App Store

Monday April 19, 2021 7:51 am PDT by
Following the removal of the app in January, Apple will now allow the social media app Parler to return to the App Store following changes to how the social media network moderates content, CNN reports. On April 14, in a letter to Sen. Mike Lee and Rep. Ken Buck obtained by CNN, Apple said that the app has improved the way it moderates content, and says those changes are "sufficient" for it...
iphone 12 120hz thumbnail feature

LTPO Displays Supporting 120Hz Refresh Rates Again Rumored for iPhone 13 Pro Models

Friday April 16, 2021 10:01 am PDT by
The two higher-end "iPhone 13 Pro" models that are coming in 2021 are expected to use LTPO display technology to enable 120Hz refresh rates, according to display analyst Ross Young. Young reaffirmed the detail in a tweet that said he'd heard rumors about only one model featuring LTPO, which he says is inaccurate. Heard some rumors in the industry and media that there would only be one ...
maxresdefault

Hands-On With Anker's MagSafe-Compatible Battery Pack

Thursday April 15, 2021 9:39 am PDT by
Anker, a company known for its range of accessories designed for Apple products, recently came out with one of the first MagSafe-compatible battery packs, so we thought we'd check it out to see how it compares to a standard battery pack. Subscribe to the MacRumors YouTube channel for more videos. Design wise, Anker's power bank looks like a typical battery pack, but it has magnets built in...