Personal | Business
Sign in or Register
O2 Logo White
  • Shop

    Phones

    • Phones
    • Upgrades
    • Apple iPhone
    • iPhone 16
    • Android phones
    • Refurbished phones

    Tablets, laptops and dongles

    • Tablets
    • Apple iPad
    • Android tablets
    • Laptops
    • Dongles and mobile WiFi

    SIMs and Tariffs

    • Pay Monthly SIMs
    • Pay As You Go SIMs
    • Tariffs
    • International
    • Top-up
    • Essential Plan

    Accessories and more

    • Tech and accessories
    • Apple Watch
    • Smartwatches
    • AirPods
    • Coming soon
    • Great deals
  • Why O2

    Flexibility

    • O2 Switch up
    • O2 custom plans
    • Multisave
    • O2 Recycle
    • Click and collect

    Perks

    • O2 Extras
    • Volt
    • Priority tickets and offers
    • Perks at O2 venues
    • Pay As You Go Rewards

    Services

    • Manage your account
    • Keeping kids safe online
    • Ideas and Inspiration
    • Insurance

    Connected

    • Coverage checker
    • Network coverage
    • 5G coverage
    • O2 WiFi
    • Using your phone abroad
    • Live bigger with Volt

      Discover extra benefits
    • O2 bubbles

      See all the reasons to choose O2

      Why join O2?
  • Help

    Help and support

    • Account
    • Products and services
    • Device guides
    • Network and international
    • Safety and security

    Most popular

    • Activating your SIM
    • eSIM
    • How to track your order
    • Payment support
    • Understanding your bill

    Useful links

    • Store locator
    • Network status
    • Faulty device
    • Virgin Media O2
    • Fraud help

    Contact us

    • O2 Community
    • My O2 App
    • Contact us
  • My O2
  • Search
  • Basket
  1. Help
  2. Device Help
  3. Apple
  4. Watch Series 3
Apple Watch Series 3

Help and support for
Apple Watch Series 3

watchOS 4
Apple Watch Series 3

Most viewed guides

Activate your Apple Watch
Set up mobile data on your Apple Watch
Read iMessage
Pair a Bluetooth device with your Apple Watch
Answer a call

Choose topic for your Apple Watch Series 3

Help & support guides for your Apple Watch Series 3

  • Set up and first use
  • Basic settings
  • Messaging
  • Connectivity and network
  • Specifications

First steps

Turn your Apple Watch on or off
Activate your Apple Watch
Charge your Apple Watch

Security settings

Turn the lock code on or off
Use Find My Apple Watch
Find your phone

Sound and screen settings

Choose language
Turn silent mode on or off
Turn Do Not Disturb on or off
Personalise the Apple Watch home screen
Use screen and keys on your Apple Watch

Making calls

Call phone number
Call a contact in your address book
Answer a call

App management

Install apps from App Store on your Apple Watch
Use health apps
Use music player
Use Apple Music
Select settings for Siri
Use Siri

Battery usage

Improve battery life

Restart

Restart your Apple Watch

Update and restoring factory settings

Update Apple Watch software
Factory reset your Apple Watch

iMessaging

Read iMessage

Text messaging

Read text message

Picture messaging

Read picture message

Email

Read email

Network settings

Set up mobile data on your Apple Watch
Turn airplane mode on or off

Bluetooth

Pair a Bluetooth device with your Apple Watch

GPS

Use GPS navigation
  • Find a store
  • Check our network
  • Sign in to My O2
  • Track my order
  • Search

Popular in shop

  • iPhone 16 Pro Max
  • iPhone 16 Pro
  • iPhone 16
  • Apple Watch Series 10
  • Apple iPad A16
  • Samsung Galaxy S25 Ultra
  • Samsung Galaxy S25
  • Samsung Galaxy Z Flip6
  • Google Pixel 9 Pro XL
  • Google Pixel 9 Pro
  • SIM Only Deals
  • Virgin Media broadband deals

Help and Support

  • Help home
  • Contact us
  • My O2
  • Collection and delivery

Shop

  • Phones
  • Tablets
  • Pay Monthly SIM
  • Collection and delivery
  • Virgin Media O2 Joint Venture
  • Facebook
  • Youtube
  • X
  • Instagram
  • About O2
  • Better Connections Plan
  • Careers
  • News & PR
  • Sponsorship
  • Virgin Media and O2
  • Accessibility
  • Terms & Conditions
  • Privacy policy
  • Cookie policy
  • Modern Slavery Statement

©2025 Telefonica UK Limited

In relation to consumer credit, Telefónica UK Limited is authorised and regulated by the Financial Conduct Authority (Reference Number 718822)