But don't despair, as relief is coming: B-Mobile has announced that by the end of 2012, capacity will be doubled, which will allow more simultaneous calls. This is very good news.
I'm not sure, however, that this will solve a related issue that occurs when many users concentrate in a small area. For example, when tens of thousands of people congregate in Changlimithang stadium, the load on the local "base station" is increased dramatically. For this type of issue, increasing the total capacity is not enough.