How do I fix iPhones that cannot make or receive calls?
Answer
When iPhones suddenly cannot call in or out, start by refreshing cellular service with Airplane Mode, confirming Cellular is on, and restarting each phone. If several phones fail together, also check for a carrier outage before changing SIM or eSIM settings.
Before you start: stop right away if…
- Removing SIMs or deleting eSIMs can prolong downtime if the real issue is a temporary network outage.
Follow these steps
Toggle Airplane Mode
On each affected iPhone, turn Airplane Mode on for about 15 seconds, then turn it off and wait for the carrier name or signal bars to return.
You should see: Cellular service returns, or No Service remains and you continue to the next step.
Restart the iPhones
Power each iPhone fully off, wait about 30 seconds, turn it back on, then try one outgoing call after the restart.
You should see: Calls connect again, or the same calling failure continues.
Verify the cellular line is on
Go to Settings, then Cellular, and make sure Cellular is turned on. If more than one line is listed, confirm the intended line is enabled for voice calls.
You should see: The correct cellular line is active for calling.
Compare phones and contact the carrier
If several iPhones still cannot call in or out, check the carrier’s outage status or account tools. Ask support for a network refresh if No Service remains after the device steps above.
You should see: You determine whether this is a handset setting issue or a carrier-side outage and get the next official fix.
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Extra tips
What to look for: Status text such as No Service or SOS Only, missing signal bars, and whether Cellular is disabled in Settings.
Before you change anything: Note whether one phone or several phones are affected. Check whether mobile data or Wi-Fi still works while calling fails. Avoid removing SIMs or eSIMs until basic refresh steps fail. Never share carrier account PINs or one-time codes with unexpected callers.