Useful app however... – Virgin Mobile USA Review

The app works fine if you are connected to data at the time of opening. You cannot open the app while connected to your WiFi network because it will repetitively flash the "Allow access to location". Just be sure to be connected to your data only at the time of opening the app so it can recognize your account. After it recognizes your account, you'll be able to open the app on your WiFi, just the original opening of the app has to be on data so it properly recognizes your account. The app is the same as logging into virginmobileusa.com and checking your usages and account information on there, despite the one bug it is a useful app.
Review by QuantumDavid on Virgin Mobile USA.