Symptoms
- Watch shows no cellular signal icon
- Calls and texts fail when away from the phone
- Cellular worked before but stopped after a carrier change
- Watch says 'no service' indoors or in certain areas
Likely causes
- CommonCellular plan not active or provisioned correctlyLTE watches need a separate cellular line or plan add-on from your carrier.
- CommonWeak carrier signal in the areaWatches often have smaller antennas than phones and can struggle in weak-signal spots.
- PossibleSIM or eSIM profile issue on the watchThe watch's cellular profile can become corrupted or need reactivation.
- PossibleCarrier network or account issueBilling problems or carrier-side outages can disable cellular service.
- Less commonSoftware bug after an updateCellular connectivity bugs occasionally appear in firmware updates.
What to do
- Confirm your cellular plan for the watch is active and paid up with your carrier.
- Check cellular signal strength in the watch's settings and try a different location.
- Toggle cellular off and back on in the watch's connectivity settings.
- Restart the watch.
- Contact your carrier to confirm the watch's line is provisioned correctly, especially after a recent phone or plan change.
- Update the watch's firmware, and remove and re-add the cellular plan through the companion app if problems persist.
When to call a pro
If your carrier confirms the plan is active and signal is fine but the watch still won't connect, contact the watch manufacturer's support for a possible modem issue.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.