Phones
Tablets, laptops and dongles
SIMs and Tariffs
Accessories and more
Flexibility
Perks
Services
Connected
Live bigger with Volt
See all the reasons to choose O2
Help and support
Most popular
Useful links
Contact us
See how to turn your Apple Watch on and off.
Press and hold the Side button until your Apple Watch is turned on.
Press and hold the Side button.
Press and drag the power off icon right.