How do I fix Call Failed on an Apple Watch?
Answer
Restart both the iPhone and Apple Watch, confirm the Watch can use the iPhone’s cellular connection or its own plan, and check that phone permissions and Wi‑Fi calling settings are intact. Re-pair the Watch only if calls still fail after those checks.
Before you start: stop right away if…
- Keep a Watch backup before unpairing when possible.
Follow these steps
Restart the iPhone and Apple Watch
Restart the paired iPhone and the Apple Watch, then try a call to a known-good number.
You should see: Calls connect, or Call Failed continues after a clean reboot.
Confirm Phone and connectivity permissions
On the iPhone, open the Watch app and confirm the Watch is connected. Also verify Wi‑Fi or cellular is working on the iPhone and that Do Not Disturb is not blocking the trial call in an unexpected way.
You should see: The Watch shows as connected and the iPhone has a usable network for call relay.
Check cellular plan status if the Watch is cellular
If the Watch has cellular, confirm the Watch cellular plan is active with your carrier in the Watch app.
You should see: Cellular is active, or you learn the Watch must stay near the iPhone for calling.
Unpair and re-pair only if needed
If calls still fail while iPhone calling works, back up the Watch, unpair it from the Watch app, then re-pair and test calling again.
You should see: Calling works after re-pairing, or Apple Support is needed for further diagnostics.
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Extra tips
What to look for: Call Failed on every contact or only some numbers, Watch cellular status, and whether the iPhone itself can complete the same call
Before you change anything: Confirm the iPhone can place calls normally by itself. Keep both devices charged and nearby during testing. Note the Watch model, such as A2351, if support asks. Avoid unpaired resets until basic restarts are tried.