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.
Verify your LG Optimus F3™ 4G LTE is connected to the Virgin Mobile voice network using My Account.
Be sure your LG Optimus F3 4G LTE is connected to the Virgin Mobile voice network to make or receive calls.
Verify if coverage is available at your current location.
If your LG Optimus F3 4G LTE has low signal strength, see if your location is within Virgin Mobile voice coverage on the Virgin Mobile coverage map.
Perform a soft reset.
A soft reset reconnects your LG Optimus F3 4G LTE to the Virgin Mobile network.
Note: To optimize device performance, be sure your LG Optimus F3 4G LTE is running the most recent device software. Check for software updates.
If you're still having issues, please contact Virgin Mobile Customer Care.