About Bluetooth, Wi-Fi and cellular on your Apple Watch

Find out about Bluetooth and Wi-Fi for your Apple Watch and how your watch uses both. And learn how cellular on GPS + Cellular models fits in.

To enjoy every feature on your Apple Watch, you need to turn on Wi-Fi and Bluetooth on your paired iPhone. Open Control Centre on your iPhone, then make sure Wi-Fi and Bluetooth are on.

Your Apple Watch uses Wi-Fi and Bluetooth to communicate with your paired iPhone. If you have mobile data, your watch can also stay connected through a mobile network. Your watch switches between these intelligently to choose the most power-efficient connection. Here’s how:

Your Apple Watch uses Bluetooth when your iPhone is near, which conserves power.
If Bluetooth isn't available, your Apple Watch will try to use Wi-Fi. For example, if compatible Wi-Fi is available and your iPhone isn’t in Bluetooth range, your Apple Watch will use Wi-Fi.
If Bluetooth and Wi-Fi aren't available, and you set up a cellular plan, cellular models of Apple Watch can connect to cellular networks.

Connect to a compatible Wi-Fi network

Your Apple Watch can connect to a Wi-Fi network:

If your iPhone, while connected to your watch with Bluetooth, has connected to the network before.
If the Wi-Fi network is 802.11b/g/n 2.4 GHz (or 5 GHz if you have Apple Watch Series 6).

When your Apple Watch connects to a compatible Wi-Fi network instead of your iPhone connection, the Wi-Fi icon appears in Control Centre.

Your Apple Watch won't connect to public networks that require logins, subscriptions or profiles.

Choose a Wi-Fi network

With watchOS 5 or later, you can choose which Wi-Fi network your Apple Watch connects to.

How to turn Wi-Fi off or on

Touch and hold the bottom of the screen.
Wait for Control Centre to show, then swipe up.
Tap the Wi-Fi icon. The icon dims and your device disconnects from any network that you're connected to.

Only Apple Watch GPS + Cellular models can disconnect from Wi-Fi networks. After you disconnect, your Apple Watch won't automatically re-join the Wi-Fi network that you disconnected from until:

You turn on Wi-Fi in Control Centre.
You walk or drive to a new location.
It's 5:00 a.m. local time.
You restart your device.

Use a mobile network

Apple Watch GPS + Cellular models can connect to mobile data. With a mobile data connection, you can make calls and use data or apps when you don't have your iPhone or Wi-Fi. Learn how to add your Apple Watch to your cellular plan.

How to check your signal strength

Touch and hold the bottom of the screen.
Wait for Control Centre to show, then swipe up.
Check the Mobile data button

Control Centre on Apple Watch showing 4 green dots.

The Mobile data button will turn green when you have a connection. The green dots show the signal strength.

Control Centre on Apple Watch showing that you're connected to Wi-Fi.

The Mobile data button will turn white when your mobile plan is active, but your Apple Watch is connected to your iPhone or Wi-Fi.

Turn mobile data on or off

Touch and hold the bottom of the screen.
Wait for Control Centre to show, then swipe up.
Tap the Mobile data button, then turn off Mobile Data.

Some apps might not update without a connection to your iPhone.

Check the connection between your iPhone and Apple Watch

Check your watch face. If you see the red Disconnected icon or the red X icon on the watch face, you don't have a connection.
Check Control Centre. Touch and hold the bottom of the screen, wait for Control Centre to show, then swipe up. If you see the red Disconnected icon or the red X icon, you don't have a connection.
Tap the iPhone icon in Control Centre. If your devices are connected, your iPhone should make a "ping" sound.