Technologies
Best Apple Watch for 2025
From budget friendly to feature-packed, these are the best Apple Watches to consider right now.
What to consider
iPhone or Android
Most smartwatches only work with one platform. The Apple Watch will only work with an iPhone, and the Samsung Galaxy Watch and Pixel Watch only pair with Android phones, for example. Garmin and Fitbit are the two major brands that currently offer smartwatches that work with both Android and iPhone.
Size and design
Smartwatches reflect your personal style and come in a variety of finishes, from aluminum to titanium, with a seemingly endless variety of watch bands to choose from. There’s also a watch size and design to suit every wrist, so you’ll want to ask yourself if you prefer a round screen for that classic wristwatch look or a square display like the Apple Watch. It’s best to try in-store before you buy.
Health and fitness features
Smartwatches have become the de-facto way to measure activity from your wrist and can encourage you to get moving. It’s increasingly common for them to offer health features like a blood oxygen sensor. Some may even have an ECG (also known as an electrocardiogram) which can check for signs of a heart condition called atrial fibrillation.
The Apple Watch is a worthy iPhone companion. It flows seamlessly into the Apple ecosystem, with frequent software updates that keep it feeling fresh and health features that build on the strengths of both devices to help you reach your goals. But not all Apple Watches are created equal and understanding the differences is key to finding the right fit for your needs and budget. Whether you’re buying your first Apple Watch, upgrading an older model or shopping for a family member, we’ve highlighted the best smartwatch options to help you land on the right choice.
SMARTWATCH DEALS OF THE WEEK
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What is the best Apple Watch?
The Apple Watch Series 10 takes everything great about its predecessors and elevates it. Compared to the Series 9, it offers a larger, brighter screen without adding bulk (it’s actually lighter), more power under the hood and faster charging than any other Apple Watch, including the Ultra 2.
While its features may not drastically differ from the Series 9, its next-gen processor ensures it will likely outlast its predecessor in terms of software updates. It also includes a few more subtle upgrades, like voice isolation for calls, music playback and a depth gauge with a water temperature sensor for aquatic activities.
Best Apple Watches for 2025
Pros
- Incredibly light on the wrist
- 1Hz refresh rate = ticking second hand!
- Voice isolation on calls is excellent
- Bigger screen makes readability better on the smaller size case
- Sleep apnea notifications at launch
Cons
- No improvements to battery life
- No significant changes to Double Tap
- Smallest 42-mm size might still be too big for some wrists
The Apple Watch Series 10 takes a winning formula and updates it for the Apple Watch’s tenth birthday. It is slimmer and lighter than earlier Apple Watches, with two new case sizes: 42 millimeter or 46 millimeter. The wide-angle OLED screens make the watch brighter when looking at it off-axis. And the LTPO3 technology also brings a ticking second hand to the always-on display. The Apple Watch Series 10 also comes with sleep apnea notifications, which can detect signs of this potentially dangerous condition over a 30-day period.
Battery life is still rated for 18 hours although you can push it to a day and a half with lighter use. The Apple Watch Series 10 now has even faster charging though, which makes up for the battery life somewhat, able to charge to 80% in 30 minutes. Overall, it’s an incredibly polished smartwatch and the best choice for most iPhone owners.
Why we like it
The Series 10 is a refined version of its predecessors on the surface and under the hood. It’s lighter and slimmer than the Series 9 but has a larger, brighter screen that’s easier to read from every angle. It has the most powerful processor of the entire Apple Watch lineup and, as a result, longer shelf life for software updates. Plus it comes with additional perks, like the ability to play music through the speaker and background noise reduction during calls.
Who it’s best for
The Series 10 is ideal for most iPhone users upgrading from an existing Apple Watch, or anyone deeply invested in the Apple ecosystem who wants a premium smartwatch experience out of the box (including the latest health sensors). It brings enough upgrades to feel like a true step up, while retaining all the features that make the Apple Watch great.
Pros
- Lower price
- Same performance as the Series 8
- Car-crash detection for additional safety
Cons
- No always-on display
- No QWERTY keyboard
- Most new features can be found on older watches too
The Apple Watch SE retails for $250 but you can regularly find it discounted to $200 or less, which makes it an excellent choice for the budget-conscious buyer. Expect most of the same features found on more expensive Apple Watch models like the Series 9, including activity tracking, third-party apps and safety features like Emergency SOS. It does miss out on an always-on display and heart-health features like the ECG.
Why we like it
The second-generation SE offers all the essential features you’d want from an Apple Watch for at least $150 less than what you’d pay for the cheapest model of the Series 10. It covers everything you need, including advanced health and fitness tracking, crash and fall detection, and seamless integration with your iPhone.
Who it’s best for
This is a great option for first-time Apple Watch buyers or anyone upgrading from a much older model (Series 0–4), as it’ll still feel like an upgrade without making you feel like you’re missing out on newer features like the always-on display or advanced health sensors like ECG or temperature tracking, which you never had in the first place. It’s also the best option for children (LTE model) as a way to stay connected with parents or caregivers without having to go all in on a smartphone.
Pros
- Incredibly bright screen
- More accurate dictation and on-device Siri
- 64GB storage means more space for music and apps
- Double Tap is very useful
Cons
- Battery life is the same as first Ultra
- Limited recovery metrics
The Apple Watch Ultra 2 is Apple’s best smartwatch, with a tough titanium construction and an Action button to quickly start workouts or launch apps. It has the brightest screen of any Apple Watch at a maximum of 3,000 nits that makes it incredibly easy to see when adventuring in the great outdoors. For adventurers and athletes, it also has a built-in siren for safety and a dual-band GPS for accurately tracking your route. LTE is also onboard so you can venture out without a phone and still stay connected.
Although it’s designed to be an outdoor watch, the Apple Watch Ultra 2 is still a fantastic all-around smartwatch. Inside is the same S9 chip as found on the Apple Watch Series 9 which supports gestures like Double Tap and allows the watch to process Siri commands on-device. This means you can use Siri without being online and later in the year you’ll be able to ask the voice assistant for health data. Like earlier Apple Watches, the Ultra 2 also comes with a blood oxygen sensor, electrocardiogram (ECG or EKG) app, fall detection and emergency SOS. The battery also lasts at least twice as long as all other Apple Watch models. It’s only compatible with the iPhone so if you have an Android phone, you’ll want to look at another option on this list.
Why we like it
The Apple Watch Ultra 2 is an all-terrain smartwatch that’s built to go the distance with nearly twice the battery life of other Apple Watches (three days on a charge), and a durable, titanium exterior. It has a larger screen than other models and an action button that can be programmed for easy access no matter what the conditions. Extras like dual-band GPS, a built-in siren, and LTE connectivity add another layer of safety when you’re off the grid.
Who it’s best for
Outdoor enthusiasts and serious athletes looking for a middle ground between a traditional Apple Watch and a full-fledged sport watch like a Garmin. The Ultra 2 is also a smart pick for current Apple Watch users who are frustrated with daily charging and willing to invest more for an extra day and a half of battery life.
Best Apple Watches Compared
See how all the Apple Watches measure up when it comes to the specs.
| Apple Watch Series 10 | Apple Watch Ultra 2 | Apple Watch SE (2nd Gen) | |
| Shape | Square | Square | Rectangular |
| Watch size | 42mm, 46mm | 49mm | 40mm, 44mm |
| Materials, finishes | Aluminum, titanium | Titanium | Aluminum, Midnight, Starlight, Silver |
| Display size, resolution | 42mm: 1.65-inch OLED 446 x 374 pixels; 46mm: 1.81-inch 496 x 416 pixels | 1.91-inch, 502 x 410-pixel OLED | 40mm: 324 x 394, 44mm: 368 x 448 |
| Dimensions | 42mm: 42 x 36 x 9.7mm; 46mm: 46 x 39 x 9.7mm | 44mm x 49mm x 14.4mm | 40mm: 40 x 34 x 10.7 mm, 44mm: 44 x 38 x 10.7 mm |
| Weight | 42mm (Wi-Fi): 30 g; 42mm (cellular): 29.3 g; 42mm (titanium): 34.4 g; 46mm (Wi-Fi): 36.4 g; 46mm (cellular): 35.3 g; 46mm (titanium): 41.7 g | 61.4g | 40mm GPS: 26.4g, 40mm Cellular: 27.8g, 44mm GPS: 32.9g, 44mm Cellular: 33g |
| Colors | Jet black, rose gold, silver; titanium: slate, gold, natural | Natural titanium | Midnight, Starlight, Silver |
| Always On | Yes | Yes | No |
| Interchangeable bands | Yes | Yes | Yes |
| GPS | Yes | Yes (L1 and L5) | Yes |
| Automatic workout detection | Yes | Yes | Yes |
| Compass | Yes | Yes | Yes |
| Altimeter | Yes | Yes (operating range: -500m to 9,000m) | Always-on altimeter |
| Water/Dust resistance | Water resistant up to 50m (5ATM), IP6X (dust) | 10ATM (100 meters) and recreational scuba diving up to 40 meters | Water resistant up to 50m (5ATM) |
| Calls | Yes | Yes | Yes (Cellular only) |
| Microphone | Yes | Yes (3-mic array) | Yes |
| Speaker | Yes | Yes | Yes |
| Voice assistant | Yes (Siri) | Yes (Siri, on-device) | Siri |
| Mobile Payments | Yes (Apple Pay) | Yes (Apple Pay) | Ys (Apple Pay) |
| Sleep tracking | Yes | Yes | Yes |
| Period tracking | Yes | Yes | Yes |
| Sensors | Accelerometer, altimeter, gyro sensor, temperature sensor, compass, third-gen optical heart sensor, electrical heart sensor, ambient light sensor, depth gauge, water temperature sensor | SPo2 (blood oxygen), ECG, optical heart, ambient light, high dynamic range gyroscope, high-g accelerometer, water temperature, depth gauge + app | Second-gen optical heart sensor, accelerometer, High dynamic range gyroscope, Compass, Always-on altimeter, Ambient light sensor |
| Emergency features | Fall detection, crash detection, Emergency SOS, international emergency calling, noise monitoring, Backtrack | International emergency calling, Emergency SOS, crash detection | Emergency SOS, International emergency calling, Crash Detection, Fall Detection, Noise monitoring, Backtrack |
| Compatibility | iOS 18 and newer | iOS 17 | iPhone 8 or later with iOS 16 and newer |
| Software | WatchOS 11 | WatchOS 11 | WatchOS 11 |
| Processor | S10 SiP with 64‑bit dual core processor, 4‑core Neural Engine | Apple S9 | S8 SiP, 64-bit dual-core, 2-core Neural Engine |
| Connectivity | Bluetooth 5.3, 2nd gen Ultra Wideband chip | LTE and UMTS, Wi-Fi 4, Bluetooth 5.3 | Bluetooth 5.3, LTE/UMTS (Cellular model) |
| Memory and storage | 64GB | 64GB | 32GB |
| Charging | USB-C fast charging cable | USB-C magnetic fast charging | Magnetic charging cable, 80% in ~1.5 hours |
| Battery life | Up to 18 hours normal use; up to 36 hours in low power mode | Up to 36 hours; up to 72 hours (low power mode) | Up to 18 hours |
| Battery capacity | Wi-Fi 4 (802.11n) | Unavailable | Not specified |
| US price | 42mm: $399 (Wi-Fi); 42mm: $499 (cellular); 42mm: $699 (titanium); 46mm: $429 (Wi-Fi); 46mm: $529 (cellular); 46mm: $749 (titanium) | $799 | 40mm GPS: $249, 44mm GPS: $279 40mm GPS + Cellular: $299, 44mm GPS + Cellular: $329 |
| UK price | 42mm: £399 (Wi-Fi); 42mm: £499 (cellular); 42mm: £699 (titanium); 46mm: £429 (Wi-Fi); 46mm: £529 (cellular); 46mm: £749 (titanium) | £799 | 40mm GPS: £219, 44mm GPS: £249, 40mm GPS + Cellular: £269, 44mm GPS + Cellular: £299 |
| Australian price | 42mm: AU$649 (Wi-Fi); 42mm: AU$809 (cellular); 42mm: AU$1,199 (titanium); 46mm: AU$699 (Wi-Fi/Bluetooth); 46mm: AU$859 (cellular); 46mm: AU$1,279 (titanium) | AU$1,399 | 40mm GPS: A$399, 44mm GPS: A$449, 40mm GPS + Cellular: A$479, 44mm GPS + Cellular: A$529 |
Recent updates
In October 2024, we added the Apple Watch Series 10 to our list. The new watch replaces last year’s Apple Watch Series 9 and is the best Apple Watch for most people.
Factors to consider when buying an Apple Watch
All Apple Watches share the same core DNA: a square screen with rounded edges, a rotating crown, interchangeable straps and Apple’s WatchOS with Siri integration. The differences lie in the details with factors like advanced health sensors, durability, battery life and screen size. Oh, and price.
Budget: If you’re on a budget and want the best deal, it might be worth waiting for major discount days like Black Friday when most retailers, including Apple, offer sales or gift-card cash-back incentives. Another way to cut costs is by purchasing a refurbished Apple Watch directly from Apple. They come with the same one-year warranty as new models, eligibility for AppleCare and a 14-day return window.
Design: There are a lot of ways to customize your Apple Watch, including different finishes and watch bands. But dressing up your Apple Watch doesn’t always come cheap and some of the more premium design options like the titanium finish and stainless steel band can increase the base price by $600. You can also customize the size of your screen; older models or the 2nd SE will have the smallest option (40mm) while the Apple Watch Ultra offers the largest (49mm) display.
Battery: Battery life continues to be a major pain point for Apple Watch users, with no model going past the three-day mark like some Android models. And while Apple has made strides in this category, it’s best to taper your expectations by accepting that you’ll probably get a day’s worth of charge (with the always on display) on most models. If that’s a deal breaker, you’ll need to splurge on the Apple Watch Ultra 2, which is the only model that lasts up to 72 hours.
Wi-Fi Only vs. Cellular: Most users will find the Wi-Fi version sufficient. It tracks workouts and makes mobile payments independently from the phone but needs to be in range of your iPhone to access some of the smart features like notifications, messaging and calls. Cellular and Wi-Fi models are only worth the splurge (an additional $100) if you plan to ditch your iPhone on a regular basis and need the watch to be a standalone device and have access to all the features. And it’s your only option if you’re buying the Ultra 2 as it doesn’t offer a Wi-Fi only option.
How we test Apple Watches
We test all our Apple Watches in the real world and focus on any new features or claims in addition to all the other features you’ll be using on a regular basis like fitness tracking and connectivity. All Apple Watches, including the cellular models, need to connect to an iPhone so we also assess how easy the companion software is to navigate.
Durability and design: Smartwatches are something you wear on your body so we assess how comfortable they are to wear. We also know that everyone has a different-sized wrist so we try to see how it fits and feels on a variety of people. Then we look at how it stands up to wear and tear with daily life. Some models, like the Ultra 2, offer increased durability like dust resistance or water resistance that’s suited for activities like scuba diving and, where possible, we’ll test this out for ourselves.
Battery: Battery life will vary depending on how you use a smartwatch so we test battery life with a few standard tests. We see how long it generally lasts on a single charge with features that represent typical use, like the always-on display, sleep tracking and doing one outdoor workout with GPS.
Fitness and health sensor accuracy: We test the accuracy of the Apple Watch using a few different methods. The heart rate sensor, for example, is compared against the readings taken from a chest strap, considered the gold standard in consumer heart rate tracking, during a variety of cardio-based activities like running or cycling. We also check to see how long it takes to connect to a GPS signal when doing an outdoor workout. Other health sensors, like a blood oxygen sensor (not active on newer models), are compared against a pulse oximeter for spot readings where possible, and for the ECG feature, we tested it against a hospital grade ECG.
Other Apple Watches we tested
While no longer sold directly by Apple, the Apple Watch Series 9 is still a strong option if you can find it. Stores like Best Buy and Target often have it in stock for about $100 less than the Series 10. You’ll miss out on the larger, redesigned screen and ultra fast charging but it still includes key health features not available on the cheaper SE, like the ECG app, temperature sensing and sleep apnea notifications.
Apple Watch FAQs
What to look forward to in 2025
Smartwatches are only getting smarter about health and the Apple Watch is no exception. Whether it’s better sensors, new metrics or more personalized coaching, Apple may be taking a queue from competitors like Garmin and Google and leaning more on AI to make sense of your data to personalize insights. One trend I’d love to see the Apple Watch adopt this year is better battery life; smarter software and hardware upgrades like the dual CPU architecture on the OnePlus Watch 3 are finally making multi-day wear feel realistic. Meanwhile, the definition of a wearable is expanding fast with more smart rings making their debuts as well as upgraded earbud options with built-in health sensors that are already nudging into smartwatch territory. They probably won’t replace watches entirely but they’re definitely raising the bar and will continue giving the Apple Watch a healthy push forward.
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.
Don’t miss any of our unbiased tech content and lab-based reviews. Add CNET as a preferred Google source.
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.
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.
Don’t miss any of our unbiased tech content and lab-based reviews. Add CNET as a preferred Google source.
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.
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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