If your Apple Watch disconnects from your iPhone, 
appears on your watch face. To see if you're connected, you can also swipe up on the watch face to open Glances. Swipe left or right to find the Settings Glance. When your Apple Watch connects again, 
appears in the Settings Glance.
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, make sure that Airplane Mode is off and that Wi-Fi and Bluetooth are on. To check, swipe up to open Control Center.
- If you see
on your watch face, Airplane Mode is on. Swipe left or right to find the Settings Glance, then turn Airplane Mode off.
- Restart your Apple Watch and iPhone.
If your Apple Watch still can't connect, unpair your devices, then pair them again:
- On your Apple Watch, tap Settings > General > Reset > Erase all Content and Settings.
- On your iPhone, open the Watch app, and tap My Watch > Apple Watch > Unpair Apple Watch.
- Pair your Apple Watch and iPhone again.
Learn more
If you want to connect your Apple Watch to a new iPhone, you can transfer your Apple Watch and its content to your new iPhone.