Head-to-head · spec by spec, a verdict per need

Apple Watch Series 12 vs Samsung Galaxy Watch9 2026

Apple Watch Series 12 is the best pick for most people with an iPhone, because it detects a hard fall or a serious car crash and can help connect you with emergency services.

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Choose Samsung Galaxy Watch9 (44mm, Bluetooth) if you have an Android or Samsung phone: it has a light, cushion design, sets reminders and sends messages from your wrist, and its larger battery keeps it going all day.

By Bez, Editor✓ Updated 28 October 2026

Apple Watch Series 12 (GPS, 42mm)See it on Amazon

Samsung Galaxy Watch9 (44mm, Bluetooth)Image: SamsungSee it on Amazon

Which one is for you?

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Which pick suits which need
Ifyou have an iPhone	Apple Watch Series 12 (GPS, 42mm)	See it on Amazon
Ifyou have a Samsung or Android phone	Samsung Galaxy Watch9 (44mm, Bluetooth)	See it on Amazon
Ifyou want fall and crash detection	Apple Watch Series 12 (GPS, 42mm)	See it on Amazon
Ifyou want a fast top-up before you go out	Apple Watch Series 12 (GPS, 42mm)	See it on Amazon
Ifyou want a light, cushioned design	Samsung Galaxy Watch9 (44mm, Bluetooth)	See it on Amazon

At a glance

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1★ Top pick
Apple
Apple Watch Series 12 (GPS, 42mm)Best for iPhone owners and safety features
Hard fall and crash detection on your wrist, with emergency help
See it on Amazon
2
Samsung
Samsung Galaxy Watch9 (44mm, Bluetooth)Best for Android and Samsung phones
Track your sleep all night, then wear it all day
See it on Amazon

Side by side

From the makers' and retailers' published factsAffiliate

The picks side by side
Pick	Best for	The fact that sets it apart	Where to buy
Apple Watch Series 12 (GPS, 42mm)	iPhone owners and safety features	Up to 24 hours of normal use, and a 15-minute fast charge gives up to 12 hours.	See it on Amazon
Samsung Galaxy Watch9 (44mm, Bluetooth)	Android and Samsung phones	A light, cushion design that sets reminders, sends messages and checks the weather from your wrist.	See it on Amazon

Get the smartwatch that works with your phone and fits your day. If you're a UK shopper choosing between an Apple Watch and a Samsung Galaxy Watch, your phone decides first. iPhone owners get the Apple Watch Series 12, which detects hard falls and serious car crashes and gives up to 12 hours from a 15-minute charge. Android and Samsung owners get the Galaxy Watch9, a light cushion design with a larger battery that keeps going all day.

Both in detail

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1★ Top pickBest for iPhone owners and safety features

Apple Watch Series 12 (GPS, 42mm)

Hard fall and crash detection on your wrist, with emergency help.

What it is: Apple Watch Series 12 is a smartwatch that lasts up to 24 hours of normal use. A 15-minute fast charge gives you up to 12 hours.
Perfect for: This is the pick for iPhone owners who want safety features on their wrist.
Why we picked it: If safety comes first, this watch detects hard falls and serious car crashes and can help connect you with emergency services. It also keeps a close eye on your body each day, so you see how well you slept and how ready you are.

Up to 24 hours of normal use, and a 15-minute fast charge gives up to 12 hours.
Detects a hard fall or a serious car crash and can help connect you with emergency services.
Measures heart rate variability as often as every five minutes, with a daily sleep score and a readiness view.

The catch: It needs an iPhone 11 or later running iOS 27 or later, so it will not work with Android phones.

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2Best for Android and Samsung phones

Samsung Galaxy Watch9 (44mm, Bluetooth)

Track your sleep all night, then wear it all day.

What it is: The Galaxy Watch9 is a light watch that sets reminders, sends messages and checks the weather from your wrist. A larger, long-lasting battery keeps it going all day.
Perfect for: Pick this if you own an Android or Samsung phone, because it suits those phones best.
Why we picked it: Sleep tracking runs from bedtime to wake-up and comes with personalised insights. Sleep tracking runs from bedtime to wake-up with personalised insights, so it suits you if you want to follow your nights as well as your days.

A light, cushion design that sets reminders, sends messages and checks the weather from your wrist.
A larger, long-lasting battery that keeps it going all day.
Sleep tracking from bedtime to wake-up, with personalised insights.

The catch: This is the Bluetooth model with no cellular connection; Samsung sells the 44mm LTE model separately.

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How we chose

Our buying criteria

Your phone decides which smartwatch fits your life, so each watch here had to suit one phone brand and bring a clear strength. We looked for a named phone requirement, a safety feature you can use every day, a fast charge that gives hours of wear, and sleep tracking you can actually read. Sizes are in mm, which means millimetres. Each smartwatch on this list was checked against its maker's specs and live UK listings, and each one shows its catch.

Your phone: an Apple Watch needs an iPhone 11 or later running iOS 27 or later.
Your phone: a Galaxy Watch suits Samsung and Android phones.
Connection: the Galaxy Watch9 here is the Bluetooth model, with no cellular connection.
Safety: Apple Watch detects hard falls and serious car crashes, if that matters to you.

How we choose every pick

Your questions, answered

Does the Apple Watch work with Android?

The Apple Watch Series 12 won't work with Android. It needs an iPhone 11 or later running iOS 27 or later. Android owners should pick the Samsung Galaxy Watch9 instead.

How long does the Apple Watch Series 12 battery last?

The Apple Watch Series 12 gives you up to 24 hours of normal use. Running low? A 15-minute fast charge gives you up to 12 hours.

Does the Galaxy Watch9 track sleep?

Yes, the Galaxy Watch9 tracks your sleep from bedtime to wake-up, with personalised insights. It is the pick for Android and Samsung phone owners.

Can the Apple Watch call for help after a fall?

The Apple Watch Series 12 can help. It detects a hard fall or a serious car crash and can help connect you with emergency services. Choose it if safety features matter most to you.

Does the Galaxy Watch9 have its own mobile signal?

No, the Galaxy Watch9 is the Bluetooth model, with no cellular connection, so it has no mobile signal of its own. Want a mobile signal on your wrist? Ask for the 44mm LTE model, which Samsung sells separately.