Everything New in iOS 16 Beta 4 For Lock Screen, iMessage, CarPlay, and More

Apple today seeded the fourth beta of iOS 16 to developers for testing. The latest beta contains a handful of new features and changes involving the Messages app, Home app, Mail app, Lock Screen notifications, CarPlay, and more.


iOS 16 is currently in beta for developers and members of Apple's free public beta testing program, and the software update will be released for all users with an iPhone 8 or newer in September. A second public beta of iOS 16 that corresponds with today's fourth developer beta is also now available.

We've outlined notable new features and changes in iOS 16 beta 4 below. Thanks to Steve Moser and @AppleSWUpdates for their contributions.

iMessage Edit/Undo Send Changes

iPhone 13 Editable Messages Feature
You can now tap on the small "Edited" label below an edited iMessage bubble to view the original version of the message and any other previous edits. In addition, iMessages can now only be edited a total of five times before the "Edit" option disappears.

While there's still a 15-minute window for editing an iMessage, Apple has reduced the time limit for unsending an iMessage to two minutes after it is delivered.

Live Activities API

ios 16 live activities feature
Apple has released ActivityKit in beta, allowing developers to begin testing the Live Activities feature on the Lock Screen in their apps on the iOS 16 beta. For now, apps that implement the feature will only be available via TestFlight.

Live Activities will provide real-time glanceable information on the Lock Screen. For example, a sports app might allow the user to start a Live Activity for a live sports game. In that scenario, the Live Activity would appear on the Lock Screen for the duration of the game and offer the latest updates about the game at a glance.

Apple says Live Activities will not be included in the initial publicly released version of iOS 16, with the feature to be enabled in an update later this year — perhaps iOS 16.1. At that time, apps offering Live Activities will become available in the App Store.

New Wallpapers in Home App

iOS 16 Beta 4 Wallpaper Feature
The fourth beta of iOS 16 adds new Wildflowers and Architectural wallpapers to choose from in the Home app, alongside existing wallpapers.

New Time Limits for Undo Send in Mail

iOS 16 Beta 4 Undo Send Feature
In the Mail app on iOS 16, it is briefly possible to unsend an email in the Mail app. In the first three betas, the time limit for unsending an email was 10 seconds, but the fourth beta provides users with options of 10, 20, or 30 seconds.

Lock Screen Notification Settings

iOS 16 Beta 4 Notifications Feature
Apple has enhanced the look of Lock Screen notification options in the Settings app. In the fourth beta of iOS 16, Apple now includes images that visualize the Count, Sack, and List options for how Lock Screen notifications are displayed.

New Lock Screen Customization Interface

Apple has revamped the interface when customizing the Lock Screen, with options for colors, gradients, photos, and more at the bottom.

iOS 16 Beta 4 Lock Screen Customizer

Bolder Music Player on Lock Screen

Apple has updated the music player on the Lock Screen with bolder elements.

iOS 16 Beta 4 Music Player

New Wallpapers for CarPlay

A static version of the iOS 16 wallpaper for the iPhone is now available for CarPlay, with multi-colored, blue, and gray options to choose from.

Other Changes

If you spot any other changes, let us know in the comments section.

Related Forum: iOS 16

Popular Stories

streaming black friday 2025

Black Friday Streaming Deals Include Big Savings on Disney+, Hulu, Apple TV, and More

Monday November 24, 2025 8:03 am PST by
We've been focusing on deals on physical products over the past few weeks, but Black Friday is also a great time of year to purchase a streaming membership. Some of the biggest services have great discounts for new and select returning members this week, including Disney+, Hulu, Paramount+, Peacock, and more. Note: MacRumors is an affiliate partner with some of these vendors. When you click a...
iOS 26

iOS 26.2 Adds These New Features to Your iPhone

Thursday November 20, 2025 10:50 am PST by
iOS 26.2 is currently in beta testing. The upcoming update includes a handful of new features and changes on the iPhone, including a new Liquid Glass slider for the Lock Screen's clock, offline lyrics for Apple Music, and more. In a recent press release, Apple confirmed that iOS 26.2 will be released to all users in December, but it did not provide a specific release date. Keep reading...
iOS 26 on Three iPhones

iOS 27 Will Reportedly Have Two Key Upgrades

Sunday November 23, 2025 8:48 am PST by
iOS 27 will reportedly have two major elements: quality improvements and new AI features. In his Power On newsletter today, Bloomberg's Mark Gurman said that iOS 27 will be similar to Mac OS X Snow Leopard, in the sense that Apple is focused on improving "quality and underlying performance" over adding new features. Gurman said there is one exception to this rule, though, as he expects...
maxresdefault

The MacRumors Show: iPhone 18 Pro Looks Like a Huge Upgrade

Friday November 21, 2025 9:10 am PST by
On this week's episode of The MacRumors Show, we talk through all of the new features and improvements expected to come to next year's iPhone 18 Pro and iPhone 18 Pro Max models. Subscribe to The MacRumors Show YouTube channel for more videos Apple's next-generation iPhones are less than ten months away and we already have a good idea about what to expect based on corroborated leaks, rumors,...
General Black Friday Deals 25 Red

Apple Black Friday Deals Available Now on AirPods, iPads, Accessories, and More

Friday November 21, 2025 8:48 am PST by
We're only a few days away from Black Friday, which will take place on Friday, November 28 in 2025. As always, this will be the best time of the year to shop for great deals, including popular Apple products like AirPods, iPad, Apple Watch, and more. In this article, the majority of the discounts will be found on Amazon. Note: MacRumors is an affiliate partner with some of these vendors. When...
Apple Shopping Event 2025

Apple Announces 2025 Black Friday Event, Here's What You Can Get

Thursday November 20, 2025 6:28 am PST by
Apple's annual four-day Black Friday through Cyber Monday shopping event is returning on Friday, November 28 through Monday, December 1 in many countries, including the United States, Canada, Australia, New Zealand, France, Germany, Italy, Spain, the United Kingdom, Belgium, the Netherlands, Sweden, Thailand, and others. During the shopping event, customers can get an Apple gift card with...
hikawa phone grip stand apple%402x

Apple Launches Second Limited-Edition iPhone Accessory in a Month

Friday November 21, 2025 3:53 am PST by
Apple has begun selling the Hikawa Phone Grip and Stand, a new limited-edition iPhone accessory designed with accessibility in mind. Designed by LA-based Bailey Hikawa to celebrate the 40th anniversary of accessibility at Apple, the grip uses magnets to securely snap onto any iPhone with MagSafe. Apple says it can be removed with ease, and doubles as a stand with two different viewing...
apple news banner

Apple News Loses CNN

Monday November 24, 2025 7:56 am PST by
American multinational news company CNN has abruptly pulled its content from Apple News, Semafor reports. CNN quietly removed its stories from Apple News over the weekend and there is no longer a feed from the network to subscribe to in the app. This effectively ends its distribution agreement with Apple while the two sides negotiate new terms. Discussions are apparently ongoing and CNN's...

Top Rated Comments

MrGimper Avatar
44 months ago
The fact that iPadOS doesn’t have the same lock screen customisation is somewhat backwards.
Score: 17 Votes (Like | Disagree)
Fraserh02 Avatar
44 months ago

The fact that iPadOS doesn’t have the same lock screen customisation is somewhat backwards.
I get you I thought this. But I have since thought maybe it’s just that on an iPad we don’t generally really use the Lock Screen, whereas the iPhone is with us all the time and we glance at it a lot more.
Score: 10 Votes (Like | Disagree)
bLackjackj Avatar
44 months ago

BETA 4 HAS FINALLY BROUGHT BACK THE FEATURE OF TOGGLING DND FROM THE LOCKSCREEN BY CLICKING THE DND ICON. WHY APPLE EVEN REMOVED THIS FROM THE FIRST PLACE COMPLETELY CONFUSES ME.
1. Why are you YELLING?

2. This is BETA software & you know this. Why does it confuse you? Features will be added, removed, updated, downgraded, fixed..etc before release. You signed up to be a free Apple tester, so why are you complaining?
Score: 10 Votes (Like | Disagree)
-BigMac- Avatar
44 months ago

So why still no option to delete a imessage?
It happens alot you send the wrong message to the wrong person!
Editing that message is not an option as they can still read the original.
Are you even reading the article/past beta articles before commenting?
Score: 8 Votes (Like | Disagree)
srbNYC Avatar
44 months ago

OH. MY. GOD.
ITS BACK.
EVERYONE, HOLD THEIR PANTS.

BETA 4 HAS FINALLY BROUGHT BACK THE FEATURE OF TOGGLING DND FROM THE LOCKSCREEN BY CLICKING THE DND ICON. WHY APPLE EVEN REMOVED THIS FROM THE FIRST PLACE COMPLETELY CONFUSES ME.
I welcome its return but NOT SURE I'M AS EXCITED AS YOU ARE ABOUT IT.
Score: 7 Votes (Like | Disagree)
Macheath_Messer Avatar
44 months ago

So why still no option to delete a imessage?
It happens alot you send the wrong message to the wrong person!
Editing that message is not an option as they can still read the original.
From the article: “…Apple has reduced the time limit for unsending an iMessage to two minutes after it is delivered.” This tells me one can still delete iMessages sent in error, no?
Score: 6 Votes (Like | Disagree)