Last Updated: Nov 23, 2015
This article helps troubleshoot making or receiving calls on your Apple iPhone 4s.
You may have issues with calls if you have:
These steps help identify and resolve the underlying cause. After completing each step, test to see if the issue is fixed. If not, continue to the next step.
Verify airplane mode is turned off.
Airplane mode is a feature that prevents your device from sending or receiving a wireless transmission.
Verify that mobile data is enabled.
Verify if coverage is available at your current location.
If your Apple iPhone 4s has low signal strength, see if your location is within Sprint voice coverage on the Sprint coverage map.
Reset the network settings.
Resetting the network settings reconnects your Apple iPhone 4s to the Sprint network and does not erase any of your content or data.
Note: To optimize device performance, be sure your Apple iPhone 4s is running the most recent device software. Check for software updates.
If you're still having issues, dial *2 on your phone or dial 855-639-4644 to reach Sprint Prepaid Customer Care.