Technologies
Skip the iOS 16.4 FOMO: Download It Now for New Emoji and Voice Isolation
If you want to improve your phone call quality, download iOS 16.4 right away.
This story is part of Focal Point iPhone 2023, CNET’s collection of news, tips and advice around Apple’s most popular product.
Apple released iOS 16.4 for the iPhone last week. The latest iOS software update adds new emoji, including a shaking face, light blue heart and donkey, and a voice isolation feature, which blocks out ambient noises to make your voice clearer during cellular phone calls.


iOS 16.4 also adds Safari-based push notifications, duplicates album support for the iCloud Shared Photo Library, crash-detection optimizations for the iPhone 14 series, VoiceOver support for maps in the Weather app, bug fixes, security updates and more.
Read on for a step-by-step guide to the process of putting iOS 16.4 on your compatible iPhone. You can also check out some of the best existing features on iOS 16 and a few hidden features we were surprised to find. And if you recently got a new iPhone, here are the best iPhone 14 cases.
Before you start, is your iPhone even compatible?
Not every iPhone will receive the iOS 16.4 update. You need at least an iPhone 8, which was released back in 2017, to run iOS 16. That also includes the iPhone X, iPhone 11, iPhone SE (second generation and up) and the new iPhone 14.


The iPhone 14 comes preinstalled with iOS 16.
James Martin/CNETNext, back up your iPhone
Getting your hands on new software can be exciting, but there are precautions you should take before updating. You may not be happy with some of the features that iOS 16.4 has to offer (although you can fix some of the most annoying ones), so you need to be able to downgrade back to an earlier version of iOS 16 for whatever reason — and that requires you to back up your iPhone before you update.
By default, your iPhone should back itself up every time it’s connected to power and Wi-Fi during your regular sleep hours. However, if this backup feature is disabled, you can go to Settings > Your Name > iCloud > iCloud Backup and then hit Back Up Now to back up your device.


You can (and should) also back up your iPhone on your Mac.
Screenshot by Nelson Aguilar/CNETAdditionally, you can back up your iPhone via Finder on your Mac. Simply connect your device to your computer, open Finder, choose your device and then create a backup. Apple also recommends archiving your backup, so that it’s not overwritten by other backups.
Also, make sure to do these three things
You want the download and installation process to go as smoothly as possible, and the best way to do that is to do the following:
- Make sure your iPhone is connected to power. You won’t be able to download iOS 16.4 if you’re under 50% battery, so it’s best to just plug in your phone while you update. And even when you’re plugged in, the battery needs to be over 20%.
- Connect to Wi-Fi. You also won’t be able to download iOS 16.4 with cellular data, so connect to a stable Wi-Fi network.
- Clear up enough storage space. If you’re running out of storage, you’ll need to clear some up before you can download and install iOS 16.4. Go to Settings > General > iPhone Storage to delete large files and apps.
Here’s our guide on how to get more iPhone storage.
How to download and install iOS 16.4
Now once you have all that set, open your iPhone and go to Settings > General > Software Update, wait a few seconds (or minutes) for the update to appear and then hit Download and Install for iOS 16.4.


You can also use Finder on your Mac to download iOS 16.4 on your iPhone.
Nelson Aguilar/CNETYou should then see a loading bar, along with a rough estimate of how long the download process will take. Once the download is complete, reboot your device and wait for iOS 16.4 to install. When your iPhone boots up, follow any prompts and you should then see iOS 16.4 downloaded on your device.
For more on the new OS, here’s a look at our iOS 16 cheat sheet and some of the most annoying features and settings on iOS 16 (and how you can fix them).
Technologies
Amazon Speeds Up Delivery Even More With 1- and 3-Hour Options
The retailer says the one-hour option is available in hundreds of cities, with discounted shipping for Prime members.
Same-day delivery apparently isn’t fast enough for some Amazon shoppers. The retail giant said on Tuesday it’s adding new shipping options that will get products to front doors within a one- or three-hour window.
The company said in its announcement that the one-hour option is available in hundreds of cities across the US, while the three-hour option is now live in more than 2,000 areas. Amazon’s web page at amazon.com/getitfast shows whether those options are available to shoppers for their location. More than 90,000 products will be available for those shipping windows, the company said.
For those who can’t get those services (including the author of this post, who lives between Austin and San Antonio in Texas), a message will display: «3-hour delivery is currently unavailable. Check back at a later time or shop products with Same-Day delivery below.»
Pricing for the faster delivery options is not cheap: It’ll cost you $20 for one-hour delivery and $15 for three-hour delivery for those without an Amazon Prime account, or $10 and $5 for customers who subscribe to Prime.
Last year, the company rolled out faster Amazon delivery options to 4,000 additional areas.
In a video of the podcast Learn and Be Curious with Doug Herrington, hosted by Amazon’s CEO of worldwide stores, Kandace Kapps, the director of the company’s same-day strategy team, spoke in more detail about the challenges of fast shipping. Kapps discussed shifts in customer buying habits over the last few years, such as more people buying household essentials like toilet paper on Amazon.
She said that Amazon can deliver so quickly by placing same-day delivery hubs close to customers in metro areas and by getting products ready to ship within 15 minutes, aided by warehouse robots.
«I think customers are going to continue to get magically surprised by how fast we can deliver to their doorstop,» Kapps said.
Herrington said fast shipping increases sales: «When we speed up the service, the probability that somebody buys a product from us goes up.»
Other retailers, including Walmart, have been adding same-day delivery options or exploring other ways to speed up shipping times to compete with Amazon.
Removing buyers’ moments of hesitation
Part of Amazon’s strategy, which has involved a massive buildout of locations, deployment of thousands of trucks, deals with other delivery services and investment in logistics software, is actually pretty simple: being there when people need last-minute items or make impulse buys.
«It’s about removing the last moment where you would’ve reconsidered the purchase,» said Stephanie Carls, retail insights expert at coupon and promotional-code website RetailMeNot, a sibling site of CNET. «It changes how you shop, not just how fast you get things.»
Carls said that Amazon’s super-fast delivery is removing the timeframe when people might change their minds about a purchase.
«There used to be a gap between deciding to buy something and actually having it. That’s when you’d price check, rethink it, or decide you didn’t need it after all,» she said. «This closes that gap.»
The retail expert said that competitors, including Walmart and Target, have been speeding up delivery times in some markets. Still, they’re not matching Amazon’s scale or product range at those speeds or levels of consistency.
«And that’s what starts to make everyone else feel slow,» Carls said. «Amazon’s advantage is how tightly connected its technology, inventory and delivery networks are, which makes this level of speed more repeatable.»
Technologies
Dog Health Goes Digital With New AI Chatbot
Fi Intelligence allows you to ask questions of a specially tailored pet health chatbot, but it’s not meant to replace vet visits.
It might be time to rethink what it means to be sick as a dog. On Tuesday, Fi, a smart pet technology company, announced a new AI-powered chatbot to help owners stay on top of their dog’s health using a blend of personal information and generalized dog breed data.
The AI agent, which the company is calling Fi Intelligence, is integrated directly into the Fi app. It has access to all the information gathered about your dog across the entire suite of Fi products, including the Fi Series 3 Plus and Fi Mini dog collars, as well as information and documents uploaded by the pet owner. The service is for dogs only (not cats, rabbits or other pets).
If you already own a Fi smart collar, existing data will be incorporated into the AI agent’s dataset to help it answer your questions.
When creating Fi Intelligence, the company identified a multitude of common questions that dog owners have, including whether their animal friend is walking or sleeping enough, or scratching more than usual. The chatbot was created to help owners find answers to these questions quickly and easily, according to Fi.
Fi designed its agent to answer these questions using a mix of general information about a dog’s breed, personal information and biometric data gathered by Fi smart pet collars.
Pet owners can ask the chatbot questions in plain English and get back detailed responses. Fi Intelligence is equipped to answer general questions, contrast your dog’s current data to previous time periods and compare your dog’s data to other dogs of the same breed.
Fi says its chatbot is different from general-purpose AI agents because it has been trained on a proprietary dataset containing «the largest repository of real-world canine activity, sleep and behavior data in the world.»
Fi Intelligence doesn’t replace a trip to the vet — and the company stresses it’s not supposed to. Rather, the agent is supposed to grant owners «informed confidence» about their dog’s health and can help them «show up [to the vet] with specific, documented observations drawn from weeks of continuous data.»
«The strongest signal from our beta was that owners aren’t using this to replace their vet,» said Fi’s Vice President of Product Darrell Stone. «They’re using it to show up better prepared.»
According to Fi, the Fi Intelligence integration will provide the most complete dog health profile available in the app so far. Fi Intelligence is available to all Fi members immediately.
Technologies
Nvidia Teases DLSS 5 and Gamers Aren’t Impressed
The new AI technology is making some big changes to video game graphics that hardly anyone seems to like.
Nvidia opened its GTC conference with a keynote by CEO Jensen Huang, revealing the company’s latest tech. Among the raft of the company’s AI developments, gamers were treated to the imminent version of its AI-powered upscaling and optimization technology, DLSS (Deep Learning Super Sampling), touted as the «biggest breakthrough in computer graphics».
Nvidia published a video illustrating how DLSS 5 can enhance graphics in Resident Evil Requiem, Starfield and other games, showing before-and-after takes. But gamers weren’t thrilled. In fact, the response to DLSS 5 resembles more of a collective backlash, replete with memes, ridicule and outrage.
Gamers were quick to point out that DLSS 5 transformed the original graphics into something vastly different. Some called the visuals «AI slop» because they look like «yassified» AI-generated filters.
Many worry that DLSS 5 could deviate from a creator’s specific artistic vision. Critics also fear that if this technology becomes the industry standard, video game graphics might start to look the same, losing their unique visual identity.
«Everything about this is a betrayal of these game’s artistry,» said YouTuber The Sphere Hunter in a post on X Monday. «Painting over handcrafted, intentional 3D art with shiny, wrinkly, sunken-in, porous, puckered, fraudulent, filtered nonsense is deeply disrespectful. If you want this, just watch gen-AI videos all day.»
Countless memes mocking the tech’s exaggerated features flooded the internet. Others on social media parodied the effects DLSS 5 could produce in other games.
Ok, you convinced us, NVIDIA DLSS 5 is coming to «Copycat» too 😅 pic.twitter.com/WT2qRRz9EC
— Copycat // OUT NOW 😻 (@GameCopycat) March 17, 2026
In a Q&A on Tuesday, Huang addressed the backlash from gamers, calling them «completely wrong.» Huang underlined that DLSS 5 «enhances and adds generative capability, but it doesn’t change the artistic control» and that «it’s in the direct control of the game developer.»
The team at Digital Foundry, which specializes in game technology and hardware reviews, called it «disruptive and transformative» but was generally positive about it, though they saw some hiccups.
«[The images] looked a little bit uncanny, I would say, but definitely the overall portrayal of those characters is much more sophisticated,» said Oliver Mackenzie, video producer and writer for Digital Foundry.
Bethesda’s official X account replied to comments from members of Digital Foundry about Starfield and The Elder Scrolls IV: Oblivion Remastered, both published by Bethesda.
«This is a very early look, and our art teams will be further adjusting the lighting and final effect to look the way we think works best for each game. This will all be under our artists’ control, and totally optional for players,» the publisher said.
DLSS 5 is set to be released sometime in the fall.
What is DLSS?
Nvidia first released its DLSS tech back in 2018 with its RTX 2080 card: The RTX architecture introduced the Tensor cores, which are essential for accelerating the calculations used by the DLSS AI. The deep learning technology was designed to upscale images and video from low resolution in real time to achieve higher frame rates.
Gamers weren’t impressed at first, but later versions of the technology did perform better in games that supported it. DLSS 4, released last year and tweaked to 4.5 as of January, made significant improvements to detail rendering, reducing motion artifacts, boosting frame rates, and generating more realistic lighting via path tracing (which incorporates interactions with ray-traced lighting).
What does DLSS 5 do?
DLSS 5 works a bit differently than previous versions of the technology. According to Nvidia, DLSS 5 shifts from processing simple pixels to understanding 3D elements. By deconstructing characters into specific components — such as skin, hair and clothing — the AI can render them more consistently. This results in faster performance and much more realistic details, especially for textures and lighting.
Game developers control how DLSS 5 enhances images and to what degree, ensuring it matches the game’s aesthetic. The demo video showcased some positive enhancements, but others looked like sweeping changes to the characters and the environment.
Which games will support DLSS 5 at launch?
On Monday, Nvidia released a list of games slated to support DLSS 5:
- AION 2
- Assassin’s Creed Shadows
- Black State
- Cinder City
- Delta Force
- Hogwarts Legacy
- Justice
- Naraka: Bladepoint
- NTE: Neverness to Everness
- Phantom Blade Zero
- Resident Evil Requiem
- Sea of Remnants
- Starfield
- The Elder Scrolls IV: Oblivion Remastered
- Where Winds Meet
What cards will support DLSS 5?
Nvidia has yet to provide a list of GPUs that will support the new technology. In an FAQ, the company says it will release a list of supported cards closer to its release.
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