This is an application that helps you to check the billing information from 3 HK. However, it is not a office apps from 3 HK. But it is pretty good ! It is free ! And it can show you the data you used, how many sms, air time , etc.... . Almost all the information the you need to check from the web of 3 HK can get from this apps . I downloaded and recommend you if you are using 3 HK as your service provider. Here is the creator.
Click here to download!