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Technologies

iPhone Air vs. Galaxy S25 Edge: Thin Phones Compared

If you’re tired of carrying a bulky phone everywhere, one of these slim designs can make a big difference. Here’s how the new iPhone Air and the Galaxy S25 Edge stack up.

If there’s one thing customers want to see from the established phone titans, it’s something new. Years of incremental improvements in processors, cameras and displays can occasionally be exciting, but unless you’re upgrading from a several-year-old model, the differences tend to be relatively minor.

So when Samsung released the super-thin Galaxy S25 Edge earlier this year, it got our attention. Naturally, it sparked speculation that Apple would also release a new slim phone, which arrived last week in the form of the new iPhone Air. (Notably, it’s not the «iPhone 17 Air,» which suggests Apple may treat it as a special case that doesn’t get yearly updates.)

How do these two slim phones compare? If you press them together, are they combined much thicker than a regular iPhone 17 or Galaxy S25? I’m here to do the math and compare features.

Looking to preorder the iPhone Air? Check out our preorder guide to learn if you can get it free and other great deals.

Want to buy the Samsung Galaxy S25 Edge? Find out which carriers and retailers have the best deals on Samsung’s slim phone.


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iPhone Air vs. S25 Edge price comparison

  • iPhone Air: $999. The iPhone Air takes the place formerly held by the iPhone 16 Plus, making it the only model with a screen larger than the iPhone 17 that isn’t an iPhone 17 Pro.

  • Galaxy S25 Edge: $1,100. The S25 Edge joins the S25 and S25 Ultra in this year’s Galaxy lineup.

The iPhone Air includes fewer features than the iPhone 17, such as the number of cameras. But it includes a larger display, an A19 Pro processor and is configured with 256GB of storage to start. Plus, Apple has always applied premium pricing for thin design changes. The original MacBook Air fit into an inter-office envelope and cost $1,799, despite being underpowered compared to the rest of the MacBook line. (Over a few generations, it would eventually become Apple’s entry-level affordable laptop at $999, where it still resides.)

The Galaxy S25 Edge’s higher price (of $101) could be an attempt to capture more dollars from customers who are looking for a phone that will set them apart, but we’re already seeing occasional steep discounts on it, like this $400 drop.

In both cases, it’s worth noting that the pricing has held up against the Trump administration tariffs so far.

iPhone Air vs. S25 Edge dimensions and weight

Now it’s time to go deep — as in, just how thin is the depth of each phone?

No phone manufacturer describes its phones as bulky or chunky, even for extra-large models like the iPhone Pro Max. Yet the difference between the depths of the iPhone Air and S25 Edge and the standard phones of each respective family is stark.

Not counting the camera assembly, which Apple calls the «plateau,» most of the iPhone Air’s body is 5.64mm thick. The S25 Edge, at its narrowest point, is a hair thicker at 5.8mm. (Both companies list only the thinnest measurement, not including the cameras.) Compare that to 7.9mm for the iPhone 17 and 7.2mm for the Galaxy S25.

The Galaxy Z Fold 7 is actually thinner when open, at 4.2mm, but it also has more surface area to spread out its battery and other components. Other foldables from Chinese companies Huawei, Oppo and Honor also boast thinner bodies than the iPhone Air or S25 Edge, but only when opened.

And when you press the two thin phones together, do they really match up to the typical phone slab you’re carrying now? Combined (and again, not including the camera bumps), the iPhone Air and S25 Ultra are 11.44mm thick, which is more chunky than either the iPhone 17 or Galaxy S25, and even the iPhone 17 Pro Max at 8.75mm. But if you wanted to get closer to an old-time feel, the original first-generation iPhone in 2007 sat at 11.6mm.

Surprisingly, less depth translates to only a little less weight compared to the other models in each lineup. The iPhone Air weighs 165 grams versus 177 grams for the iPhone 17, while the S25 Edge pips in at just 163 grams but gets barely undercut by the Galaxy S25 at 162 grams.

How big is each phone in the hand? While both are pretty similar, the iPhone Air is slightly shorter and narrower at 156.2mm tall and 74.7mm wide, compared to the S25 Edge’s dimensions of 158.2mm tall and 75.6mm wide.

iPhone Air vs. S25 Edge displays

Apple calls the iPhone Air’s 6.5-inch OLED screen a Super Retina XDR display. It has a high resolution of 2,736×1,260 pixels at a density of 460 ppi (pixels per inch) and can output a maximum of 3,000 nits of brightness outdoors and just 1 nit minimum in the dark.

Samsung packed a larger 6.7-inch QHD+ Dynamic AMOLED 2X screen into the S25 Edge, which translates to a high-resolution display measuring 3,120 x 1,440 pixels at 513 ppi. Its brightness goes up to 2,600 nits.

Both phones’ screens feature adaptive 120Hz refresh rates for smoother performance.

Comparing the iPhone Air and S25 Edge cameras

So far, many of the specs have been close enough to weigh each phone fairly evenly. But then we get to the cameras.

The iPhone Air includes a single rear-facing 48-megapixel wide camera with a 26mm-equivalent field of view and a constant f/1.6 aperture. In its default mode, the camera outputs 24-megapixel «fusion» photos that are the result of an imaging process where the camera captures a 12-megapixel image (using groups of four pixels acting as one larger pixel for better light gathering, called «binning») and a 48-megapixel reference for additional detail.

Apple also claims the iPhone Air can capture 2x-zoomed (52mm-equivalent) telephoto images that are 12 megapixels in dimension and represent a crop of the center of the image sensor.

The S25 Edge includes two built-in rear cameras, a 200-megapixel wide and a 12-megapixel ultrawide. There’s no dedicated telephoto camera, so the S25 Edge also offers a 2x-zoomed crop that shoots photos at 12 megapixels in size.

The front-facing selfie cameras on each phone are quite different. The iPhone Air introduces a new 18-megapixel camera with an f/1.9 aperture. But the increased resolution over the S25 Edge’s 12-megapixel selfie camera isn’t what’s notable. Apple calls it a Center Stage camera because it has a square sensor that can capture tall or wide shots without physically turning the phone, compared to the 4:3 ratio sensors in typical selfie cameras. It can adapt the aspect ratio based on the number of people it detects in front of the camera: a traditional portrait orientation when you’re snapping a photo of yourself, for example, or switch to a landscape orientation when two friends stand next to you in the frame.

iPhone Air vs. S25 Edge batteries

When it comes to concerns, the battery life of thin phones tops the list. The insides of most phones are packed with as much battery as will fit, so making a phone slimmer naturally means removing space for the battery. With either model, you end up sacrificing battery power for design. But how much?

Apple doesn’t list the iPhone Air’s battery capacity, but claims «all-day battery life» and up to 27 hours of video playback. It also sells a special iPhone Air MagSafe Battery add-on that magnetically snaps to the back of the phone and works only with the iPhone Air. In her review, CNET’s Senior Tech Reporter Abrar Al-Heeti drained the battery in 12 hours over a phone-intensive day, but did end a more typical day with 20% remaining.

The S25 Edge includes a 3,900-mAh battery that Samsung claims will play up to 24 hours of video playback. (Come on, phone manufacturers, our phones aren’t televisions left running in the background.) 

In her S25 Edge review, Al-Heeti noted that the phone also generally lived up to Samsung’s own «all-day battery life» boast, saying, «Ultimately, you’ll get less juice out of that slimmer build, but S25 Edge offers just enough battery life to make me happy…But the S25 Edge has shifted my priorities. I’m enjoying the sleek form factor so much that I’m willing to make some compromises, even if that means I have to be sure to charge my phone each night, which is something I tend to do anyway.»

It’s worth noting that both phones support fast charging when using a 20-watt or higher wired power adapter, going from zero to around 50% charge in 30 minutes.

iPhone Air vs. S25 Edge processor, storage and operating system

The iPhone Air is powered by Apple’s latest A19 Pro processor, the same one found in the iPhone 17 Pro models (compared to the A19 in the stock iPhone 17). Apple doesn’t list the built-in memory, but we suspect it includes 8GB of RAM (which is recognized as the minimum amount to run AI features such as Apple Intelligence). The base storage configuration is 256GB, with options to order the iPhone Air with 512GB or 1TB capacity. It ships with iOS 26, the latest version of the operating system that Apple released widely this week.

The S25 Edge runs on a Snapdragon 8 Elite processor, the same one that powers the other S25 models. It includes 12GB of RAM and is available in storage capacities of 256GB and 512GB. The phone comes preinstalled with Android 15.

iPhone Air vs. S25 Edge all specs

Apple iPhone Air vs. Samsung Galaxy S25 Edge

Apple iPhone Air Samsung Galaxy S25 Edge
Display size, tech, resolution, refresh rate 6.5-inch OLED; 2,736 x 1,260 pixel resolution; 1-120Hz variable refresh rate 6.7-inch QHD+  AMOLED display; 120Hz refresh rate
Pixel density 460ppi 513 ppi
Dimensions (inches) 6.15 x 2.94 x 0.22 in 2.98 x 6.23 x 0.23 inches
Dimensions (millimeters) 156.2 x 74.7 x 5.64 mm 75.6 X 158.2 X 5.8mm
Weight (grams, ounces) 165 g (5.82 oz) 163g (5.75 oz)
Mobile software iOS 26 Android 15
Camera 48-megapixel (wide) 200-megapixel (wide), 12-megapixel (ultrawide)
Front-facing camera 18-megapixel 12-megapixel
Video capture 4K 8K
Processor Apple A19 Pro Snapdragon 8 Elite
RAM + storage RAM N/A + 256GB, 512GB, 1TB 12GB RAM + 256GB, 512GB
Expandable storage None No
Battery Up to 27 hours video playback; up to 22 hours video playback (streamed).Up to 40 hours video playback, up to 35 hours video playback (streamed) with iPhone Air MagSafe Battery 3,900 mAh
Fingerprint sensor None (Face ID) Under display
Connector USB-C USB-C
Headphone jack None None
Special features Apple N1 wireless networking chip (Wi-Fi 7 (802.11be) with 2×2 MIMO), Bluetooth 6, Thread. Action button. Apple C1X cellular modem. Camera Control button. Dynamic Island. Apple Intelligence. Visual Intelligence. Dual eSIM. 1 to 3,000 nits brightness display range. IP68 resistance. Colors: space black, cloud white, light gold, sky blue. Fast charge up to 50% in 30 minutes using 20W adapter or higher via charging cable. Fast charge up to 50% in 30 minutes using 30W adapter or higher via MagSafe Charger. IP88 rating, 5G, One UI 7, 25-watt wired charging, 15-watt wireless charging, Galaxy AI, Gemini, Circle to Search, Wi-Fi 7.
US price starts at $999 (256GB) $1,100 (256GB)

Technologies

Kohler Wants to Put a Tiny Camera in Your Toilet and Analyze the Contents

The company’s new Dekoda toilet accessory is like a little bathroom detective.

Some smart litter boxes can monitor our pets’ habits and health, so having a camera in our human toilet bowls seems inevitable. That’s just what kitchen and bathroom fixture company Kohler has done for its new health and wellness brand, Kohler Health

The $599 Dekoda clamps over the rim like a toilet bowl cleaner, pointing an optical sensor at your excretions and secretions. It then analyzes the images to detect any blood and reviews your gut health and hydration status. Depending on the plan you choose, the subscription fee is between $70 and $156 per year.


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At toilet time, you sign in via a fingerprint sensor so that the device knows who’s using the facilities. (Please wash your hands before signing out or tracking your progress.) Then, check in with the app for the day’s analysis and trends over time. 

Wait until you’re off the pot, though, before you start doomscrolling your health. The device has a removable, rechargeable battery and uses a USB connection. 

Kohler says it secures your data via the aforementioned fingerprint scanner and end-to-end encryption, and notes that the camera uses «discreet optics,» looking only at the results, not your body parts. 

«Dekoda’s sensors see down into your toilet and nowhere else,» the company says. 

Kohler warns that the technology doesn’t work very well with dark toilet colors, which makes sense. I’m sure there could be an upsell model with a light on it. Maybe the company could add an olfactory sensor, since smell reveals a lot about your gut health too. It could track «session» length or buildup under the rim to alert whoever has responsibility to clean it.

Kohler must have been straining to find appropriate lifestyle photos to include with the publicity materials. Many of the images are hilarious, featuring fit-looking men and women drinking water and staring off into space contemplatively — probably thinking about gas.

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Technologies

Who’s Up to Fight Mega-Corporations in the Outer Worlds 2 on Xbox Game Pass?

Save the universe by fighting one CEO at a time in The Outer Worlds 2, plus play other great games coming to Xbox Game Pass in October.

Space is the final frontier, and it’s packed with some devious mega-corporations who are out to make a buck in The Outer Worlds 2. Xbox Game Pass subscribers can fight them in the highly anticipated sequel starting on Oct. 29.

Xbox Game Pass offers hundreds of games you can play on your Xbox Series X, Xbox Series S, Xbox One, Amazon Fire TV, smart TV and PC or mobile device, with prices starting at $10 a month. While all Game Pass tiers offer you a library of games, Game Pass Ultimate ($30 a month) gives you access to the most games, as well as Day 1 games, like Hollow Knight: Silksong, added monthly.

Here are all the games subscribers can play on Game Pass soon. You can also check out other games the company added to the service in October, including Ninja Gaiden 4.


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PowerWash Simulator 2

Game Pass Ultimate and PC Game Pass subscribers can start playing on Oct. 23.

If you’ve ever spent hours watching people on YouTube clean dirty rugs, cars and other grimy objects, you should check out PowerWash Simulator 2. As the name suggests, this sequel is all about blasting away dirt and filth from pools, homes and other objects around town. You have a furry kitty companion, and yes, you can pet them when you’ve finished cleaning.

Bounty Star

Game Pass Ultimate and PC Game Pass subscribers can start playing on Oct. 23.

The American Southwest has devolved into a lawless, post-apocalyptic desert called the Red Expanse in this game. You’re out to clean the place up in this game by taking down major bounties issued by the government, and the best way to do that is by piloting and customizing a giant mech, of course. When you want to nurse your wounds, head back to your run-down garage to rest, grow and cook food and raise animals. It’s like a cozy Armored Core game.

Super Fantasy Kingdom (game preview)

Game Pass Ultimate and PC Game Pass subscribers can start playing on Oct. 24.

After returning from a hunting trip, you find your 8-bit kingdom wrecked in this game. You must rebuild your domain in this roguelite, city builder. But as night falls, hordes of monsters emerge to tear everything back down. Build, mine, cook and grow your home, and prepare to defend it from all dangers.

Halls of Torment

Game Pass Ultimate, Game Pass Premium and PC Game Pass subscribers can start playing on Oct. 28.

Get ready to descend into the deadly Halls of Torment in this retro, horde survival game. You can choose between 11 playable characters, each with their own playstyle, and equip various items and abilities to survive waves of enemies. This game is like Vampire Survivors, so if you like that game give this one a shot.

The Outer Worlds 2

Game Pass Ultimate and PC Game Pass subscribers can start playing on Oct. 29.

Clear your calendar for this sequel to the award-winning sci-fi adventure, The Outer Worlds. This time, you’re an Earth Directorate agent investigating the cause of devastating rifts that could destroy humanity. You have a new ship, new crew, new enemies and mega-corporation goons standing between you and the answers. 

1000xResist

Game Pass Ultimate, Game Pass Premium and PC Game Pass subscribers can start playing on Nov. 4.

One thousand years in the future, humanity is hanging on by a thread after a disease spread by alien occupation forces people to live underground in this sci-fi adventure game. You play as Watcher, and you fulfill your duties well, until one day you make a shocking discovery. This game won a Peabody Award in 2024, and it was nominated for the Nebula Award for Best Game Writing that same year, so get ready for a story like no other.

Football Manager 26

Game Pass Ultimate and PC Game Pass subscribers can start playing on Oct. 29.

Get ready for a more immersive matchday experience in the latest installment of the Football Manager franchise. You can build a star-studded squad with new transfer tools, and this entry features official Premier League licenses and women’s football for the first time in the series’ history.

Game Pass subscribers can play the standard or Console edition of this game. 

Games leaving Game Pass on Oct. 31

While Microsoft is adding those games to Game Pass, it’s also removing three others from the service on Oct. 31. So you still have some time to finish your campaign and any side quests before you have to buy these games separately.

Jusant 
Metal Slug Tactics 
Return to Monkey Island

For more on Xbox, discover other games available on Game Pass now and check out our hands-on review of the gaming service. You can also learn about recent changes to the Game Pass service.

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Technologies

Does Charging Your Phone Overnight Damage the Battery? We Asked the Experts

Modern smartphones are protected against overcharging, but heat and use habits can still degrade your battery over time.

Plugging your phone in before you head to bed might seem like second nature. That way by the time  your alarms go off in the morning, your phone has a full charge and is ready to help you conquer your day. However, over time, your battery will start to degrade. So is keeping your phone plugged in overnight doing damage to the battery?

The short answer is no. Keeping your phone plugged in all the time won’t ruin your battery. Modern smartphones are built with smart charging systems that cut off or taper power once they’re full, preventing the kind of «overcharging damage» that was common in older devices. So if you’re leaving your iPhone or Android on the charger overnight, you can relax.

That said, «won’t ruin your battery» doesn’t mean it has no effect. Batteries naturally degrade with age and use, and how you charge plays a role in how fast that happens. Keeping a phone perpetually at 100% can add extra stress on the battery, especially when paired with heat, which is the real enemy of longevity. 

Understanding when this matters (and when it doesn’t) can help you make small changes to extend your phone’s lifespan.


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The science behind battery wear

Battery health isn’t just about how many times you charge your phone. It’s about how it manages voltage, temperature and maintenance. Lithium-ion batteries age fastest when they’re exposed to extreme levels: 0% and 100%. 

Keeping them near full charge for long stretches puts additional voltage stress on the cathode and electrolyte. That’s why many devices use «trickle charging» or temporarily pause at 100%, topping up only when needed.

Still, the biggest threat isn’t overcharging — it’s heat. When your phone is plugged in and running demanding apps, it produces heat that accelerates chemical wear inside the battery. If you’re gaming, streaming or charging on a hot day, that extra warmth does far more harm than leaving the cable plugged in overnight.

Apple’s take

Apple’s battery guide describes lithium-ion batteries as «consumable components» that naturally lose capacity over time. To slow that decline, iPhones use Optimized Battery Charging, which learns your daily routine and pauses charging at about 80% until just before you typically unplug, reducing time spent at high voltage.

Apple also advises keeping devices between 0 to 35 degrees Celsius (32 to 95 degrees Fahrenheit) and removing certain cases while charging to improve heat dissipation. You can read more on Apple’s official battery support page.

What Samsung (and other Android makers) do

Samsung offers a similar feature called Battery Protect, found in One UI’s battery and device care settings. When enabled, it caps charging at 85%, which helps reduce stress during long charging sessions.

Other Android makers like Google, OnePlus and Xiaomi include comparable options — often called Adaptive Charging, Optimized Charging or Battery Care — that dynamically slow power delivery or limit charge based on your habits. These systems make it safe to leave your phone plugged in for extended periods without fear of overcharging.

When constant charging can hurt

Even with these safeguards, some conditions can accelerate battery wear. As mentioned before, the most common culprit is high temperature. Even for a short period of time, leaving your phone charging in direct sunlight, in a car or under a pillow can push temperatures into unsafe zones.

Heavy use while charging, like gaming or 4K video editing, can also cause temperature spikes that degrade the battery faster. And cheap, uncertified cables or adapters may deliver unstable current that stresses cells. If your battery is already several years old, it’s naturally more sensitive to this kind of strain.

How to charge smarter

You don’t need to overhaul your habits but a few tweaks can help your battery age gracefully. 

Start by turning on your phone’s built-in optimization tools: Optimized Battery Charging on iPhones, Battery Protect on Samsung devices and Adaptive Charging on Google Pixels. These systems learn your routine and adjust charging speed so your phone isn’t sitting at 100% all night.

Keep your phone cool while charging. According to Apple, phone batteries perform best between 62 and 72 degrees Fahrenheit (16 to 22 degrees Celsius). If your phone feels hot, remove its case or move it to a better-ventilated or shaded spot. Avoid tossing it under a pillow or too close to other electronics, like your laptop, and skip wireless chargers that trap heat overnight.

Use quality chargers and cables from your phone’s manufacturer or trusted brands. Those cheap «fast-charge» kits you find online often deliver inconsistent current, which can cause long-term issues.

Finally, don’t obsess over topping off. It’s perfectly fine to plug in your phone during the day for short bursts. Lithium-ion batteries actually prefer frequent, shallow charges rather than deep, full cycles. You don’t need to keep it between 20% and 80% all the time, but just avoid extremes when possible.

The bottom line

Keeping your phone plugged in overnight or on your desk all day won’t destroy its battery. That’s a leftover myth from a different era of tech. Modern phones are smart enough to protect themselves, and features like Optimized Battery Charging or Battery Protect do most of the heavy lifting for you.

Still, no battery lasts forever. The best way to slow the inevitable is to manage heat, use quality chargers and let your phone’s software do its job. Think of it less as «babying» your battery and more as charging with intention. A few mindful habits today can keep your phone running strong for years.

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