There is nothing wrong with the app itself, but on ST using a mobile hot spot app can be risky for a few reasons.
First being, ST does not allow it. Second being that even if they don't say anything about you using the MHS it is easy to get carried away with the data usage when on a PC and you could blow through high amounts in a short period and get your service canned.
Contrary to what some seem to think. ST is not offering a MiFi service through these phones. If someone wants a MiFi service try Virgin Mobiles MiFi service/device or go through any other provider that sells MiFi devices specifically for that use.
Sent from my AT100 using Tapatalk 2