How do I fix no service on a phone after inserting a new Mercury SIM?
Answer
Reseat the Mercury SIM, restart the phone, temporarily turn off Wi-Fi Calling, and confirm the line is activated with Mercury before assuming the handset is faulty.
Before you start: stop right away if…
- Do not share one-time codes or account passwords with anyone who contacts you unexpectedly about the new Mercury service.
Follow these steps
Restart the phone
Turn the phone fully off, wait about 30 seconds, then power it back on and check the signal status.
You should see: Service bars appear, or No Service remains after a clean restart.
Reseat the Mercury SIM
Power off, remove the SIM tray, reinsert the Mercury SIM correctly, and power on again.
You should see: The phone recognizes the SIM and shows the carrier name or signal.
Turn off Wi-Fi Calling temporarily
On iPhone, go to Settings > Phone > Wi-Fi Calling and turn it off, then try a normal cellular call.
You should see: Calls work over cellular, or the failure is confirmed as a SIM or line activation issue.
Confirm activation with Mercury
If No Service continues, contact Mercury through its official support channel to verify the mobile number is activated and provisioned on the network.
You should see: Mercury confirms activation, pushes network settings, or replaces a faulty SIM.
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Extra tips
What to look for: A No Service or SIM not recognized message, whether mobile data or calls fail, and whether the SIM is fully seated
Before you change anything: Power off the phone before removing the SIM. Handle the SIM by the edges and match the tray notch. Note whether broadband internet works separately from phone calls. Do not share account passwords with unexpected callers about the new service.