Samsung Galaxy Watch 4 Battery Life – Is It Legit?


Samsung Galaxy Watch 4 Battery LifePin

The Samsung Galaxy Watch 4 is the first watch to run on Google and Samsung’s new and improved Wear OS platform. But is the Samsung Galaxy Watch 4’s battery life any good? Let’s find out…


Apple is currently dominating the smartwatch market with its Apple Watch. If you check people’s wrists when you’re out and about as I do, you’ll notice that nearly every single person that has a smartwatch uses Apple Watch. There are exceptions, of course, but Apple Watch is very, very popular.

This is largely down to Apple’s immense brand appeal. And the fact that LOTS of people use iPhones. This is why AirPods are so popular: people love and like to buy into the Apple ecosystem. This appeal is the secret sauce inside Apple’s enduring success this past decade and a half. Me? I prefer to use Garmin watches – but that’s because I’m a runner.

When it comes to non-Apple Watch smartwatches, the next best option on the market – for about as long as I can remember – is Samsung. Up until 2021, Samsung used its own Tizen OS inside its wearables. And that was fine, Tizen had plenty of decent features as well as great fitness and health tracking plus things like GPS and heart monitoring.

But from 2021 onwards, Samsung has joined forces with Google to push a reimagined version of Wear OS to the masses. The new Wear OS is leagues better than the old version and with Samsung’s help – and brand appeal – it should make the platform much more widely used in 2021 and beyond.

Plus, the Samsung Galaxy Watch 4 is a beautifully designed watch as well – it’s much nicer looking than Apple’s.

Samsung Galaxy Watch 4 Battery Life

A wearable, for me anyway, lives and dies by its battery life. In order for it to be actually useful and not a hindrance, it needs to be able to last at the very least a few days between charges. This is the #1 reason why I have never used an Apple Watch. I just cannot be bothered with charging one up every single day.

With the Samsung Galaxy Watch 4, you’re looking at around 40 hours of battery life with mixed-use. If you use the GPS heavily, like for daily running and the like, you’ll run it down quicker. But if you’re just using it to track your steps and pick up notifications, you’ll get 40 hours of use between charges – that’s around double what you get with Apple Watch which will only muster about 18 hours between charges.

Samsung Galaxy Watch 4 Battery LifePin

The Samsung Galaxy Watch 4 is also considerably cheaper than the Apple Watch. You’re looking at less than $300/£300 for the base model. If you run an Android phone or a Samsung phone, the Samsung Galaxy Watch 4 is definitely worth a look. I’d go as far as saying it is the best Android-leaning smartwatch on the market right now.

Samsung Galaxy Watch 4 Features

It has GPS, so is a great option for runners. It can measure your body composition from your wrist which is a great tool to monitor fat loss. You can tell, for instance, if you’re losing body fat, water weight, or muscle. And if you want to be optimally healthy, you’ll only want to lose water and body fat. Muscle is very important.

The Samsung Galaxy Watch 4 will also give you an overview of how many calories you’ve burnt. You can connect it to MyFitnessPal too. Samsung has also included over 90 guided exercise programs inside the watch too, so you can always find a new, fresh workout to get your blood pumping.

And if that wasn’t enough to get you pumped about this watch, the Samsung Galaxy Watch 4 can also measure your blood pressure as well via its ECG sensor. The ECG sensor will also check for abnormal heart rates and rhythm too which is super handy and is a feature not available on other smartwatches.

Samsung Galaxy Watch 4 vs Apple Watch – Battery Life Comparison

With respect to most of the other popular wearable options, 40 hours is very respectable. It is no way near the kind of performance you’ll get from a Garmin watch – my Fenix 6 lasts for about a month with heavy usage and daily GPS monitoring. If you’re interested in tracking your sports activities, I’d always advise a Garmin watch – prices start from $200 and go all the way up to $900 for the flagship models with solar charging.

Save £130 on Garmin Fenix 6 Watch – LIMITED SALEPin
The Garmin Fenix 6

But, again, Garmin watches are designed specifically for running, biking, and swimming – sports basically. They do have smartwatch features but nothing like what you get on Apple Watch and Samsung’s Galaxy Watch 4. But if battery life is important to you, as well as health and fitness tracking and durability, you really cannot go wrong with a Garmin like the Garmin Fenix 6 – it looks like a proper watch and it tracks literally everything with market-leading accuracy.

But if you’re looking for something smarter and a lot cheaper, you really cannot go wrong with the Samsung Galaxy Watch 4 – it’s less than $300/£300 to buy and it looks amazing in person and on your wrist. I also really love Wear OS’ new fitness and health tracking abilities. It’s great, not as good as Garmin Connect but still very respectable.

Latest Smartphone Releases


  • Xiaomi 15S Pro

    The Xiaomi 15S Pro didn’t come with a flashy launch, but it brings some seriously heavy hardware to the table. A custom 10-core chip, Leica-engineered cameras, and one of the brightest displays on the market

  • Samsung Galaxy S25 Edge

    At just 5.8mm thick, it’s one of the thinnest Android phones ever made—but don’t let the slim profile fool you. This phone is all flagship under the hood.

  • Nothing Phone (3a) Pro

    It’s got the same slick design and OLED display, but adds a periscope zoom camera and a 50MP front-facing shooter.

  • Nothing Phone (3a)

    The Nothing Phone (3a) nails the formula: give people what they actually want, keep the price low, and make it look cooler than anything else in its class.

  • Motorola EDGE 60 Pro

    With a bold design, flagship-like display, and surprisingly refined camera system, it’s one of the most interesting mid-range phones of 2025.

  • Google Pixel 9

    I’ve been using the Pixel 9 for a few weeks now, and honestly? It nails all the basics—and a bit more. Killer stuff all round!

  • Google Pixel 9 Pro

    I’ve used the Pixel 9 Pro as my daily device, and it’s hands-down the best balance of power, practicality, and photography you’ll find on Android right now.

  • OnePlus 13

    I’ve been using the OnePlus 13 as my daily driver for a few months now—and I’ve got to say, it’s easily one of the best Android phones I’ve tested this year.

  • Xiaomi 15 Ultra

    After using the Xiaomi 15 Ultra for over a week, I can confidently say: this phone is an absolute beast. It’s made for camera nerds, power users, and creators.

  • iPhone 16 Pro Max

    If you’ve been holding out for a truly complete iPhone, the 16 Pro Max delivers—hard. After using it daily, I won't be going back…

  • Google Pixel 9 Pro XL

    Big screen, big battery, and even bigger brains—this is the Pixel to get if you want Google’s best hardware and longest support.

  • Google Pixel 9a

    The Pixel 9a brings Google’s flagship-level smarts to a budget-friendly package, and it’s easily one of the best-value Android phones of 2025.

Best SIM-Only Plans & Deals


  • Boost Mobile Unlimited Premium Plan

    Boost’s top-tier option brings the heat: 50GB of premium data, hotspot, North America roaming, global talk & text, and $430 off select devices. All-in at $60/month with no contract.

    +

    Data: Unlimited (50GB premium speed)

  • Boost Mobile Unlimited+ Plan

    Level up with 40GB of premium data, hotspot access, global calling, and up to $300 in device savings. All for just $50/month. No contracts and flexible phone options included.

    +

    Data: Unlimited; Speed Caps After 40GB

  • Boost Mobile Unlimited Plan

    Start strong with 30GB of premium data, unlimited everything, and a killer intro offer: just $15/month for the first 3 months, then $25/month forever. No contracts. No fluff. Big value.

    +

    Data: Unlimited (Speed Caps Over 30GB)

  • iD Mobile 1 Month SIM-Only: 108GB

    Another high-data, low-cost option with no contract. 108GB for just £9, full 5G access, and the same goodies you get with 12-month deals.

    +

    Data: 108GB

  • iD Mobile 1 Month SIM-Only: 20GB

    The lowest price option. 20GB for £6 with all the same perks as pricier plans. Great if you don’t use much data and want to save every penny.

    +

    Data: 20GB

  • iD Mobile 1 Month SIM-Only: 110GB

    This plan gives you big data and zero commitment. 110GB for just £10 with all perks intact. If you need more data but want the freedom to cancel, this is the one.

    +

    Data: 110GB

  • iD Mobile 1 Month SIM-Only: 60GB

    More data, same price. For just £8/month, you get 60GB on a no-strings 1-month rolling plan. Ideal for users who stream often but don’t want long commitments.

    +

    Data: 60GB

  • iD Mobile 1 Month SIM-Only: 40GB

    Perfect if you want full flexibility. You get 40GB and all of iD Mobile's perks with no lock-in, annual increases, or setup fees. Great for short-term users.

    +

    Data: 40GB

  • iD Mobile 12 Month SIM-Only: 60GB

    One of the best pound-per-GB plans around. You get 60GB for £8 with £25 cashback, which means you’re effectively paying closer to £6/month. Includes roaming and data rollover.

    +

    Data: 60GB

  • iD Mobile 12 Month SIM-Only: 108GB

    This deal gets you a healthy 108GB of 5G data for less than a tenner, with no upfront costs and £24 cashback. All the perks are included too: data rollover, roaming, and loyalty rewards.

    +

    Data: 108GB

  • iD Mobile 12 Month SIM-Only: Unlimited Data

    This iD Mobile plan doesn’t just compete on price, it’s up there with the best of them. Unlimited everything, a year-long lock-in with no price rises, and £42 cashback straight to your pocket. It’s like getting nearly 3 months free.

    +

    Data: Unlimited, No Speed Caps

  • Mint Mobile 20GB Plan

    If you're looking to save some cash on your bills, this plan is an awesome option. You'll get 20GB of data per month and 20GB hotspot data allowance. For moderate to heavy users, that should be more than enough. I seldom use more than 10GB of data a month, and I'm always using my phone

    +

    Data: 20GB