Have you noticed when you try to visit a website on your smartphone you experience the "Access Forbidden error"? The cause of this is due to AT&T giving a higher priority to it's own customers than
h20 wireless
Galaxy S4 HTC One APN Settings H20
Here are Screenshots of APN and MMS Settings for H20 Wireless, that you can use on your Galaxy S4 or HTC One.
This will get you Data services (If you have plans with Data).
It's important you have