If your Apple Watch isn't connected or paired with your iPhone
If you see a red iPhone icon on your Apple Watch, or you're trying to pair and can't find the "i" icon, try to connect your devices again.
Check your Apple Watch connection
If you don't get notifications, messages, or calls on your Apple Watch, your Apple Watch and iPhone might not be connected.
When your devices aren't connected, the red iPhone icon
or the red X icon
appears in Control Center. When your Apple Watch connects again, the green iPhone icon
appears.
Bring your Apple Watch and paired iPhone close together. If your watch shows that the devices are still disconnected, try the steps below. After each step, see if your devices can connect.
Try to connect your Apple Watch and iPhone again
Keep your Apple Watch and paired iPhone close together to make sure that they're in range.
On your iPhone, swipe down from the top-right corner of your screen to open Control Center, then make sure that Airplane Mode is off and that Wi-Fi and Bluetooth are on.
On your Apple Watch, press the side button to open Control Center, then make sure that Airplane Mode is off.
Unpair your devices, then pair them again
If your Apple Watch still can't connect, unpair it from your iPhone, then pair your Apple Watch and iPhone again.