Another carrier will be joining major wireless networks AT&T, Sprint and Verizon and regional carriers such as Cricket, C -Spire Wireless and nTelos in offering the iPhone 5 in the United States. MacRumors reported on Monday that Virgin Mobile USA will release the iPhone 5 on a date yet to be announced.

Actually, the reason why Virgin Mobile chose not to release the iPhone 5 last week at the same time as Cricket is quite a mystery, according to sources. There are 16 mobile carriers in the United States that are confirmed for the iPhone, including the carriers mentioned above, but Virgin Mobile and Alaska Communications are the only two that haven’t released it yet.

Virgin Mobile representatives refused to comment when pressed by MacRumors for further information. At the present, the most recent iPhone being offered by Virgin Mobile is the 4S. Sources say, that the carrier will be offering both iPhone 5 flavors – white and black – and will offer the 16 GB, 32 GB and 64 GB versions.

One advantage of subscribing to a Virgin Mobile price plan is the relatively inexpensive agreements being offered, such as a data plan worth only $30 per month. With that in mind, Virgin Mobile doesn’t have its own 4G LTE network unlike other major and regional carriers.

We don’t know any information on Virgin Mobile’s pricing, but as the carrier hasn’t announced anything as of this writing, we’d assume it would also offer the 16 GB iPhone 5 unlocked for $649. That also happens to be the price of the very same unlocked variant in the Apple store.