The big three smartwatches each work best with their own phones, so the right choice depends on which phone you carry. Prices and ratings are the easiest way to compare the rest.

We compared them on Amazon UK, using price, rating and number of reviews. We haven't tested them ourselves. This comparison is based on the Amazon listings and customer ratings, so check the latest price and details before you buy.

WatchApprox. priceRatingReviews
Apple Watch Series 11£3004.7400+
Apple Watch SE 3£2194.6370+
Samsung Galaxy Watch8£2144.5260+
Samsung Galaxy Watch8 Classic£3684.5270+
Google Pixel Watch 4£3044.51,000+

Our take: Apple Watches only work with iPhones. Galaxy Watches and Pixel Watches work with Android, and some Samsung features need a Samsung phone. Check compatibility before you buy.

Short answer: Your phone decides it. iPhone owners should look at the Apple Watch Series 11 (4.7 rating, around £300). Android owners can choose the Pixel Watch 4 (around £304) or the Samsung Galaxy Watch8 (around £214). Prices and ratings are from Amazon UK, checked when our catalogue was last updated. Prices change, so check the latest on Amazon.

1. Best for iPhone: Apple Watch Series 11

Apple Watch Series 11 GPS 42mm Smartwatch
Apple Watch Series 11 GPS 42mm Smartwatch
★★★★☆ 4.7 · 400 Amazon UK ratings
£300

A 4.7 rating from around 400 buyers at around £300. The SE 3 is the cheaper alternative at around £219, with a 4.6 rating.

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Also consider: Apple Watch SE 3 GPS 40mm Smartwatch — £219 (4.6★, 369 reviews)

Compare more in our Best Premium Smartwatches UK 2026 guide →

2. Best value for Android: Samsung Galaxy Watch8

Samsung Galaxy Watch8
Samsung Galaxy Watch8
★★★★☆ 4.5 · 264 Amazon UK ratings
£214

A 4.5 rating from more than 260 buyers at around £214. The Classic is the larger, more expensive version.

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Also consider: Samsung Galaxy Watch8 Classic 46mm — £368 (4.5★, 268 reviews)

Compare more in our Best Premium Smartwatches UK 2026 guide →

3. Most reviewed Android watch: Google Pixel Watch 4

Google Pixel Watch 4
Google Pixel Watch 4
★★★★☆ 4.5 · 1,040 Amazon UK ratings
£304

A 4.5 rating from more than 1,000 buyers at around £304.

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Compare more in our Best Premium Smartwatches UK 2026 guide →

4. Toughest: Apple Watch Ultra 3

Apple Watch Ultra 3 [GPS + Cellular 49mm] Running and
Apple Watch Ultra 3 [GPS + Cellular 49mm] Running and
★★★★☆ 4.6 · 152 Amazon UK ratings
£749

A 4.6 rating from more than 150 buyers at around £749. The big, expensive version for sport and outdoors.

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Compare more in our Best Premium Smartwatches UK 2026 guide →

Frequently Asked Questions

Which smartwatch is best for iPhone?
The Apple Watch. The Series 11 has a 4.7 rating at around £300, and the SE 3 is cheaper at around £219. Android watches do not pair with an iPhone.
Which smartwatch is best for Android?
The Google Pixel Watch 4 has the most reviews (1,000+). The Samsung Galaxy Watch8 is cheaper at around £214, and some of its features work best with a Samsung phone.
Can I use an Apple Watch with Android?
No. Apple Watches need an iPhone to set up and use.
HomeGadgetPro Editorial Team
Our buying guides are based on real Amazon UK product data, verified customer ratings and independent research. Prices are checked weekly. We may earn commission on purchases made through links in this article — see our affiliate disclosure.