So I found an app that will allow you to create a WiFi Hotspot in infrastructure mode and not ad-hoc. The phone itself needs to be rooted in order to bypass your carrier's network authentication and set itself up as a WiFi Hotspot setting, but any devices you are trying to connect to the Hotspot will not have to be rooted. The name is WiFi Tether Router and is in the play store. It is a very very useful app. The encryption works lol and so many other things as well. You'll just have to see for yourself! I was able to use it successfully on a my non-rooted Asus tablet connecting to my rooted 4G LTE phone. Worked flawlessly and I didn't have to change hardly any configuration settings, only just the network ssid and password and the channel, but other than that it was great. It also has a data monitor to show data sent and received and total amount of data used, along with managing the clients connected to the Hotspot. Enjoy!