Why does a new phone show SOS and cannot make calls after transferring data?
Answer
SOS-only service after a phone transfer usually means the cellular plan or eSIM/SIM did not finish activating on the new device.
Before you start: stop right away if…
- Erasing the new phone repeatedly can delay eSIM activation without fixing a carrier provisioning issue.
Follow these steps
Check cellular status on the new phone
Open the cellular or mobile network settings and confirm whether a SIM or eSIM is listed as On and assigned to your carrier.
You should see: You see an active line, a missing line, or an incomplete eSIM download.
Toggle Airplane Mode and restart
Turn Airplane Mode on for about 15 seconds, turn it off, then restart the phone and wait a minute for signal bars to return.
You should see: Normal signal appears, or the phone stays on SOS.
Finish SIM or eSIM activation
If using a physical SIM, reseat it. If using eSIM, complete the carrier’s install or transfer steps, including any QR code from the carrier.
You should see: The carrier line shows On and is ready for calls.
Confirm the old phone is no longer holding the line
If the old phone still has service, ask the carrier to complete the transfer so only the new phone owns the number.
You should see: Service moves fully to the new phone.
Contact the carrier if SOS remains
Call or chat with the carrier from another phone and ask them to refresh provisioning for the new device IMEI.
You should see: The carrier repairs activation and normal calling returns.
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Extra tips
What to look for: An SOS or No Service status in the status bar, failed outgoing calls, and a completed app/data transfer from the old phone.
Before you change anything: Keep the old phone available until the new line works. Know whether the line uses a physical SIM or eSIM. Have your carrier account PIN or transfer QR ready. Do not repeatedly erase the new phone while waiting for carrier activation.