Wi-Fi, cellular & Bluetooth

Phone won't connect to smartwatch

This is usually caused by a Bluetooth pairing glitch, an app permission issue, or a companion app needing an update rather than a hardware defect. Restarting both devices and re-pairing resolves most cases.

Difficulty
Easy
Time
10–15 minutes
DIY cost
$0
Pro cost
$0

Symptoms

  • Watch shows disconnected from phone icon
  • Companion app can't find the watch
  • Notifications stop appearing on the watch
  • Connection drops shortly after pairing

Likely causes

  • CommonBluetooth connection between watch and phone droppedSmartwatches maintain a fairly constant Bluetooth link that can occasionally drop and need reconnecting.
  • CommonCompanion app needs an updateWatch companion apps are updated frequently, and an outdated version can cause connectivity issues.
  • PossibleLocation or Bluetooth permission revoked for the companion appSome watch apps need background location or Bluetooth permission to maintain a stable connection.
  • PossibleWatch software needing an updateFirmware bugs on the watch side can also cause connection instability.
  • Less commonToo many other Bluetooth devices connected simultaneouslyManaging many Bluetooth connections at once can occasionally destabilize one of them.

What to do

  1. Turn Bluetooth off and back on on the phone.
  2. Restart both the phone and the smartwatch.
  3. Open the companion app and check for a reconnect or pair option.
  4. Update the companion app to its latest version from the app store.
  5. Check the app's permissions in phone settings for Bluetooth and Location access.
  6. Check for a watch software update through the companion app.
  7. Unpair and re-pair the watch from scratch if reconnecting doesn't work.
  8. If the watch won't reconnect after a full unpair and re-pair, try setting it up on a different phone temporarily to isolate the issue.

When to call a pro

If the watch fails to reconnect on a different phone as well after a full re-pair, the watch itself may need manufacturer support.

Safety

Generally low risk

Generally low risk for a careful person. Stop if anything looks different from what this guide describes.

Related guides

Operator provides AI-generated troubleshooting information. It can be wrong. For safety-critical, electrical, gas, structural, medical, automotive safety, or other high-risk problems, consult a qualified professional.