T-Mobile USA has today made the Sony Xperia Z available to pre-order ahead of its exclusive launch tomorrow, July 17. The waterproof flagship can be purchased for just $99 down on T-Mobile’s Simple Choice plan — or $579 if you’d like to buy the device outright — and it comes with a free wireless speaker while stocks last.

One of the first announcements that T-Mobile made at its New York press event yesterday was the availability of the Sony Xperia Z . The device will be on sale starting July 17, and is the exact same waterproof Xperia that launched in Europe and Japan earlier this year.

Android has held a pretty sizable lead over the iPhone for a long time now, and in the United States, it would appear there’s little chance of that changing any time soon. But Apple’s smartphone is gaining ground on its rival, and it’s all thanks to T-Mobile.

The white, 16GB LG Nexus 4, which was introduced just over one month ago, is now sold out on Google Play and “no longer available for sale.” If you didn’t already get your hands on one, then you may have missed your chance, because the limited edition device will not be reappearing.

We had expected BlackBerry Messenger to make its debut on Android and iOS on June 27 thanks to T-Mobile U.K., but when it became apparent that the carrier’s announcement was incorrect, we started to wonder just how long BlackBerry would keep us waiting.

But during a quarterly earnings call this morning, CEO Thorsten Heins again reiterated the company’s plan to make BBM a cross-platform service “before the end of the summer.”