Smartwatches Buying Guide (2026): What to Check Before You Buy

What to look for

• Match the watch to your phone first: Apple Watch needs an iPhone, and Galaxy and Pixel watches need Android.
• Battery life ranges from about a day for app-heavy smartwatches to two weeks for fitness-first Garmin models.
• Decide whether you need cellular; it adds cost and a monthly network fee but lets you leave the phone at home.
• Check the health features you will actually use, such as ECG, sleep tracking, fall detection or GPS accuracy.

How much to spend

Typical prices run from £209 to £739. Budget models cover the basics; spending more usually buys best all-round smartwatch for iPhone, now with longer battery. Only pay for features you will use.

Who should skip what

• Skip the Apple Watch Series 11 if you use an Android phone; Apple Watch only works with iPhone
• Skip the Garmin Forerunner 265 if you want a smartwatch first, with lots of apps, calls and a voice assistant
• Skip the Samsung Galaxy Watch8 if you use an iPhone; Galaxy Watch does not support iPhone
• Skip the Apple Watch SE 3 if you want ECG, a blood-oxygen sensor or the largest screen

Buying tips

Smartwatches see their best UK prices on Black Friday and after a new model launches each September, when last year’s version drops. Check whether you want GPS-only or cellular before you buy, because you cannot add cellular later, and keep the box for returns.

Our picks

See all our best smartwatches in the uk for more options.