FaceTime stopped working after switching

FaceTime registers against your phone number the same way iMessage does — so when your number moves to a new carrier, FaceTime sometimes needs to re-register too. The fix is nearly identical.

The fix, in order

1. Toggle FaceTime off and on. Settings, then Apps, then FaceTime — flip it off, wait a few seconds, flip it on.
2. Check your number. On the same screen, under "You Can Be Reached By FaceTime At," make sure your phone number is checked.
3. Restart your phone.
4. Set Date & Time to automatic — Settings, then General, then Date & Time. A wrong clock blocks activation.

Like iMessage, FaceTime can take up to 24 hours to re-activate after a carrier change, though it's usually quick.

If calls connect but quality is poor — or won't start

• Check your connection. FaceTime needs Wi-Fi or cellular data; if your signal is shaky, start here.
• Allow FaceTime over cellular. Settings, then Cellular — scroll down and make sure FaceTime is allowed to use cellular data.
• Check Screen Time restrictions. If FaceTime or Camera is blocked under Screen Time, calls quietly fail.

If iMessage is down too

They almost always break — and heal — together, since both register your number with Apple at the same time. Work through the iMessage guide and both usually come back at once. Still quiet after a day? Let us know and we'll take a look from the network side.