Technologies

1 Month Later, the iPhone 15 Is Still an Excellent Upgrade

The iPhone 15’s long battery life and excellent camera make it a top choice for people coming from an older phone.

The iPhone 15 initially won me over with its sleek matte design; convenient USB-C charging; easier multitasking thanks to the Dynamic Island; and much improved camera. Even though some of the iPhone 15’s standout features debuted last year on the iPhone 14 Pro, they still felt fresh and new to someone like me, who was coming from an iPhone 12.

One month later, those opinions still hold true. The iPhone 15 had a somewhat rocky launch, after a wave of news reports and social media posts suggested that some iPhone 15 Pro models were overheating. But I experienced only one instance in which my iPhone 15 felt noticeably warm, leading me to believe this wasn’t a consistent problem. Apple also released a software update to address the issue, so my overall opinion of the phone remains unchanged.

Now that I’ve had more time with the iPhone 15, I’ve also gotten a better understanding of its battery life, charging speeds and overall performance. I also had the chance to try out the new Precision Finding feature for pinpointing a friend’s location, which works only with other iPhone 15 models.

A closer look at battery life and charging

I’ve been using the standard 6.1-inch iPhone 15 for almost a month, and it’s more than capable of getting through a full day on a single charge. I rarely find myself reaching for a charger during the workday, and I’ve never worried that I wouldn’t be able to make it to an after-work event like happy hour with co-workers.

I recently attended a close friend’s wedding, and it was probably the busiest day I’ve had since switching to the iPhone 15. My day started with hair and makeup at around 9:30 a.m. and ended the following morning, once the after-party wrapped up at about 2:30. Despite charging for only a few minutes before I headed to the venue, the iPhone 15 still lasted the whole day — even after streaming music for several hours as the bridal party was getting ready.

Still, it’s worth noting that long battery life is typical of new smartphones, since the battery is fresh. As Apple explains on its website, a battery’s capacity decreases as it ages. The battery in the iPhone 15 I’ve been using still has 100% of its maximum capacity, while the one in my 3-year-old iPhone 12 is down to 86%.

In addition to anecdotal information on battery life, CNET reviewers run two battery tests on smartphones: a 45-minute general usage test and a 3-hour video streaming test. The general test is meant to see how much everyday tasks like scrolling through social media and making a video call drain the battery. The second test shows how video streaming taxes the device’s battery. We measure the phone’s battery life every hour during the streaming test.

Take a look at the results below to see how the iPhone 15 and 15 Plus fared during these tests.

iPhone 15 and 15 Plus Battery Life

	iPhone 15	iPhone 15 Plus
45-minute test	From 100% to 95%	From 100% to 98%
Video streaming test	1 hr: 97%; 2 hrs: 91%; 3 hrs: 85% (60Hz)	1 hr: 99%; 2 hrs: 94%; 3 hrs: 89% (60Hz)

The iPhone 15 can replenish 50% of its battery in 30 minutes using a 20W adapter, while the 15 Plus can refill the same amount in 35 minutes, according to Apple. The iPhone 15 Plus seems to line up with that, charging from 20% to 67% in 30 minutes. The regular iPhone 15, on the other hand, went from 20% to 73% in the same period of time, also aligning with Apple’s estimates.

The iPhone 15 and 15 Plus support 7.5W charging when using a standard Qi wireless charger and 15W when using a MagSafe charger. And the difference is very noticeable. The iPhone 15 Plus refilled only 5% of its battery after charging via a Qi wireless charger for 30 minutes. But when using a Belkin MagSafe wireless charging stand, it went from 65% to 86%. The smaller iPhone 15 charged a bit faster when using a Qi wireless charger, going from 15% to 28% in 30 minutes. But like its larger sibling, it replenished its battery much more quickly when charging via MagSafe. After half an hour, it went from 28% to 50%.

The iPhone 15 makes it easier to find your friends

A screenshot of Apple's Precision Finding feature on the iPhone 15

You’ve been able to share your location with other iPhone users for years, but Apple took that a step further with the iPhone 15. Apple’s new phones include a feature called Precision Finding for Find My, which literally points you in the right direction of the person you’re trying to find.

However, this works only if both parties have an iPhone 15, since the feature requires Apple’s new ultra wideband chip. That limits its appeal, since you can’t use it unless your friends and family members also happened to upgrade their phones recently.

Still, I imagine it’ll become standard in new iPhones moving forward, which means it could become handy over time. It’s Apple’s way of giving iPhone owners yet another reason to stay within the iOS ecosystem instead of switching to Android.

I tried this out with one of the only other people I know who has an iPhone 15: my husband, who also happens to be a tech journalist. To put it to the test, I told him to hide in a random aisle in our local grocery store while I waited outside. It took a few moments for the iPhone to lock onto his location, but it led me to the exact aisle in a matter of minutes.

Camera, Dynamic Island and other features

I covered the new 48-megapixel camera, Dynamic Island, USB-C and general performance in my initial review of the iPhone 15. But I have some additional thoughts to share now that I’ve spent more time with the device.

The Dynamic Island can be helpful for multitasking. Though I don’t use it to keep tabs on my Uber’s ETA as much as I thought I would, I do use it whenever I’m squeezing a workout into my lunch break during the week. It lets me keep Slack open on the screen so I don’t miss anything important while still allowing me to jump to the next track in my Spotify playlist.

The switch to USB-C has been really convenient, although there are some instances in which I find myself digging for a Lightning charger to power up accessories like my Magic Mouse. But another cool thing I’ve tried since publishing my initial review is hooking up my iPhone to my work monitor using a USB-C to HDMI cable. It’s not as smooth and optimized as Samsung’s Dex mode, since it essentially just mirrors the iPhone’s screen. I can’t imagine why anyone would use this method instead of AirPlay, but it does work.

The A16 Bionic processor feels quick and snappy, just as you’d expect. I ran two benchmarks on the iPhone 15 and 15 Plus: One called Geekbench 6 for measuring everyday performance and another called 3DMark Wild Life Extreme for testing graphics performance. The iPhone 15 scored higher than the iPhone 14 on both tests.

Geekbench 6

Geekbench 6 (single) 2,618 2,170Geekbench 6 (multi) 6,580 4,530

iPhone 15
iPhone 14

Note: Higher scores are better.

3DMark Wild Life Extreme overall score

3DMark Wild Life Extreme 3,029 2,777

iPhone 15
iPhone 14

Note: Higher scores are better.

3DMark Wild Life Extreme frames per second

3DMark Wild Life Extreme 18.1fps 16.6fps

iPhone 15
iPhone 14

Note: Higher scores are better.

The new 48-megapixel camera is a major upgrade compared with the camera in older phones like the iPhone 12. I shared some camera samples in my initial review, but here’s another one to underscore my point. The photo on the left was taken with the iPhone 15, while the one on the right was shot on the iPhone 12. There’s so much more contrast and detail in the iPhone 15’s image compared with the iPhone 12’s.

Two side-by-side photos of a man with a beard sitting at a cafe.

Overall thoughts

The iPhone 15 is a welcome upgrade for folks with older phones. The Dynamic Island finally helps Apple’s standard iPhone catch up to Android when it comes to multitasking; the camera feels significantly improved; and battery life is long enough to get you through a day and then some.

My initial criticisms also still stand: I’d love to see the regular iPhone gain an always-on display, since that feature is considered standard across almost every other smartphone in 2023. Precision Finding for Find My would also be much more useful if it worked with more iPhone models.

But overall the iPhone 15 is a great choice for people who are committed to Apple’s ecosystem, are upgrading from a phone that’s more than two years old, and don’t need all the iPhone 15 Pro’s bells and whistles.

Technologies

How Much Energy Do Your AI Prompts Consume? Google Just Shared Its Gemini Numbers

Current measurements of AI’s impact aren’t telling the full story. Google has offered a new method it hopes to standardize.

The explosion of AI tools worldwide is increasing exponentially, but the companies that make these tools often don’t express their environmental impact in detail.

Google has just released a technical paper detailing measurements for energy, emissions and water use of its Gemini AI prompts. The impact of a single prompt is, it says, minuscule. According to its methodology for measuring AI’s impact, a single prompt’s energy consumption is about the equivalent of watching TV for less than 9 seconds.

That’s quite in a single serving, except when you consider the variety of chatbots being used, with billions of prompts easily sent every day.

On the more positive side of progress, the technology behind these prompts has become more efficient. Over the past 12 months, the energy of a single Gemini text prompt has been reduced by 33x, and the total carbon footprint has been reduced by 44x, Google says. According to the tech giant, that’s not unsubstantial, and it’s a momentum that will need to be maintained going forward.

Google did not immediately respond to CNET’s request for further comment.

Google’s calculation method considers much more

The typical calculation for the energy cost of an AI prompt ends at the active machine it’s been run on, which shows a much smaller per-prompt footprint. But Google’s method for measuring the impact of a prompt purportedly spans a much wider range of factors that paint a clearer picture, including full-system dynamic power, idle machines, data center overhead, water consumption and more.

For comparison, it’s estimated that only using the active TPU and GPU consumption, a single Gemini prompt uses 0.10 watt-hours of energy, 0.12 milliliters of water and emits 0.02 grams of carbon dioxide equivalent. This is a promising number, but Google’s wider methodology tells a different story. With more considerations in place, a Gemini text prompt uses 0.24Wh of energy, 0.26mL of water and emits 0.03 gCO2e — around double across the board.

Will new efficiencies keep up with AI use?

Through a multilayered series of efficiencies, Google is continually working on ways to make AI’s impact less burdensome, from more efficient model architectures and data centers to custom hardware.

With smarter models, use cases and tools emerging daily, those efficiencies will be critical as we immerse ourselves deeper in this AI reality.

For more, you should stop using ChatGPT for these things.

Technologies

Vivo Launches Mixed-Reality Headset, an Apple Vision Pro Competitor

Vivo Vision has many of the same design elements as Apple’s VR/AR, but is only available in China, for now.

Look-alikes of Apple products often pop up in China, and mixed-reality headsets have now joined the party. Chinese smartphone maker Vivo has introduced the Vivo Vision, a headset mixing both AR and VR, and it bears many similarities to the Apple Vision Pro.

The company announced the Vivo Vision Discovery Edition at its 30th anniversary celebration in Dongguan, China, saying it’s «the first MR product developed by a smartphone manufacturer in China, positioning Vivo as the first Chinese company to operate within both the smartphone and MR product sectors.»

The Vivo Vision, currently only an in-store experience in mainland China, has a curved glass visor, an aluminum external battery pack and downward-pointing cameras like the Vision Pro. But it also has some differences — an 180-degree panoramic field of view and a much lighter weight at 398 grams (versus the Vision Pro’s 650 grams).

CNET asked Vivo if it plans to sell the Vivo Vision to non-China markets, but the company did not immediately respond.

The Vivo Vision runs on OriginOS Vision, Vivo’s mixed-reality operating system. It supports 3D video recording, spatial photos and audio, and a 120-foot cinematic screen experience.

The starting cost in China will be $1,395 (converted to US dollars), compared to the Vision Pro at $3,500.

Even if the Vivo Vision came to the consumer market in the US, it might not matter much to Apple’s bottom line. The Vision Pro hasn’t been a big seller, likely because of the price tag. Still, the headset market is expected to grow quickly over the next several years, and Apple is already working on new versions of the Vision Pro, including one that’s more affordable than the original.

Jon Rettinger, a tech influencer with more than 1.65 million YouTube subscribers, says he’s not overly enthusiastic about VR/AR just yet. «It’s heavy, invasive and without a must-have use case,» Rettinger told CNET. «If the technology can go from goggles to glasses, I think we’ll see a significant rise. But if the current form factors stay, it will always be niche.

The YouTuber loves that the technology exists, but still doesn’t use it. «The honeymoon wore off. Aside from some gaming and content viewing, it’s still cumbersome, and I tend to go back to my laptop,» he said.

Technologies

Today’s NYT Strands Hints, Answers and Help for Aug. 22 #537

Here are hints and answers for the NYT Strands puzzle for Aug. 22, No. 537.

Looking for the most recent Strands answer? Click here for our daily Strands hints, as well as our daily answers and hints for The New York Times Mini Crossword, Wordle, Connections and Connections: Sports Edition puzzles.

Today’s NYT Strands puzzle has a fun theme, especially if you have ever read Agatha Christie books or played a few rounds of the board game Clue. If you need hints and answers, read on.

I go into depth about the rules for Strands in this story.

If you’re looking for today’s Wordle, Connections and Mini Crossword answers, you can visit CNET’s NYT puzzle hints page.

Read more: NYT Connections Turns 1: These Are the 5 Toughest Puzzles So Far

Hint for today’s Strands puzzle

Today’s Strands theme is: Whodunit?

If that doesn’t help you, here’s a clue: Solve the crime

Clue words to unlock in-game hints

Your goal is to find hidden words that fit the puzzle’s theme. If you’re stuck, find any words you can. Every time you find three words of four letters or more, Strands will reveal one of the theme words. These are the words I used to get those hints but any words of four or more letters that you find will work:

REST, POEM, SOUR, SOURS, DIAL, HOLE, VOLE, ROLE, ROLES, VOLES, HOLES, DEEM, GAIT, SAME

Answers for today’s Strands puzzle

These are the answers that tie into the theme. The goal of the puzzle is to find them all, including the spangram, a theme word that reaches from one side of the puzzle to the other. When you have all of them (I originally thought there were always eight but learned that the number can vary), every letter on the board will be used. Here are the nonspangram answers:

HEIR, LOVER, RIVAL, SPOUSE, STRANGER, DETECTIVE

Today’s Strands spangram

Today’s Strands spangram is ITSAMYSTERY, with all the answers being characters common to mystery novels. To find it, look for the I that’s the farthest left letter on the top row, and wind down.