Blu Studio Energy Can't connect to wifi

Just received new phone today. Unable to connect to wifi. Blu site says "With all unlocked devices, you must always make sure your device has proper access to the internet by making sure your APN (Access Point Name) settings are correct. To access the APN settings on most devices you can go to Settings > More… > Mobile Networks > Access Point Names."

When I go to settings, "Mobile Networks" is grayed out and can't be selected. Any ideas what to do?