If you have an unlocked Windows Phone device that you want to bring over to T-Mobile's network in the U.S., you can get a SIM card for free with a coupon. That's with free shipping, too. Just wait for the SIM card in the mail, choose a plan, and put the SIM card in your phone.

T-Mobile's SIM cards are usually sold for $10. Head over to their online store and enter coupon code: NOVSIM. There appears to be a limit of two cards per customer.

Rudy doesn't sleep and neither do we. He's been working full-time on developing for Windows Phone the past few weeks, which is why you've seen a steady update cycle with his app. 6tag for example, just received another update tonight. Let's check out what's new in the latest version.

We've got nearly every major messaging platform on Windows Phone. Outside of iMessage, BBM, and whatever chat app Google is pushing we've got them all. WhatsApp and Skype are arguably the most popular, based on anecdotal evidence from you all in comments. But LINE Messenger is pretty popular too. In fact, the service boasts some 280 million users in over 231 countries. It's also just been updated on Windows Phone. Let's check out what's new.

We're big fans of apps that chose to launch exclusive on Windows Phone first before going cross-platform. We're also big fans when those apps revolve around a unique idea. Youmigo is an app that's currently in beta for Windows Phone 8 users that is not only exclusive to Windows Phone, but pretty unique. Let's check it out and give you details on joining this beta.

If you're a fan of drawing (or coloring) on your Windows Phone, then make sure you pick up the latest version of Fresh Paint. Last updated in October, version 2.0.3303.1 is now live in the Store. Unfortunately, not much in the way of changes are described, instead the old change log is still present.

As we start to come to the end of 2013, we figured we would have a little site celebration and say thanks. Just a few days ago, Windows Phone Central hit the 3 million unique visitors a month threshold.

To put that number in perspective, it was just 11 months ago when we hit 1 million uniques—that's a healthy 200% increase in less than a year.  One-third of that is US based, while the rest, we're proud to say, is the rest of the world...

It has been a couple of months since we last mentioned Sleeve Music. This app is currently exclusive to Windows Phone 8 and will be available on Android and iOS later this fall. Version 2.0 is out now, introducing a new look with a light theme. Sleeve Music lets you track and discover your favorite artists by grabbing content from Soundcloud, YouTube, Facebook, Twitter, and more.

Head past the break to watch our walkthrough video.

Microsoft and Nokia are actively testing Windows Phone 8.1, according to Nawzil. The two companies are running FB Pages Manager. Should you not familiar with the name, it essentially enables you to manage your Facebook profiles while on the move. What's interesting is the analytics behind the app, reporting on hardware running multiple builds of Windows Phone 8.1 (aka. Blue).

Whatever Microsoft ends up calling SkyDrive won't matter to use too much. The service is easily one of our favorite cloud storage solutions, but does so much more if you're inside the Microsoft ecosystem. From syncing your PC apps and settings across your devices on Windows 8.1 to automagically saving your Windows Phone images, SkyDrive is awesome. And it's about to get a lot better for folks using the service on the Xbox One.

We go hands on with AT&T's latest Windows Phone, the ATIV S Neo

This past weekend, AT&T released the Samsung ATIV S Neo, their first Windows Phone 8 Samsung device. Released earlier this year on Sprint, the ATIV S Neo is a version 1.1 of the original ATIV S—more slight refinements than an overhaul.

Samsung was once again not interested in promoting their device so we had to go out and buy the phone ourselves, instead of a standard review unit. The phone runs for $99 on contract or $420 off and while many Lumia fans won't find much to gawk over, the phone is a solid entry into the Windows Phone category.

We'll be following up with a full review in a bit, but here are our quick impressions of the latest Windows Phone 8 device for AT&T. Check out our video tour and high resolution photos after the break!

There was a stretch of time there where the Facebook Beta app was seemingly getting a new update nearly every Friday. And then it stopped. It's been about a month since the app has been updated, but today we're finally getting an update. Anything new?

LockMapper is an interesting app that allows you work some magic with your current location. The app has been published in India through the Nokia Collection, but for the rest of the world there was a waiting game until we were also able to download. Luckily, the developer has got in touch with us to reveal that an official International version has been published on the Windows Phone Store. 

Found yourself wanting to try out LockMapper? Now's your chance.

The 8X Windows Phone by HTC is a premium smartphone running the latest version of Windows Phone 8. Sporting Beats Audio, you're looking at a high-end offering, which is currently on sale over on the Microsoft Store. If you're looking at a solid deal for the festive season ahead, you can pick up an unlocked HTC 8X for just $249.

If you reside in Russia, you may want to get your wallet ready. The 10.1-inch Nokia Lumia 2520 tablet, running Windows RT, is now available for preorder. Costing 23990 rubles ($732), the Lumia 2520 is Nokia's first foray into the world of Windows. While not full Windows 8.1, the tablet runs the more streamlined RT version on a Snapdragon 800 2.2 GHz CPU, 32 GB of storage and a gorgeous 1080P display.

Unfortunately, a date for the release is not given. So while you can give them your money for a red or black version (white is selectively available), you won't exactly know when you're getting it.

This Week: Purchase the BodyGuardz HD Anti-Glare ScreenGuardz for Nokia Lumia 1020 and save over 40%

Windows Phone Central has brought you several accessory reviews for the Microsoft Surface over the past few months. We've covered cases from Bear Motion, MiniSuit, and more. One case manufacturer has been noticeably absent though: MoKo Cases. These cases came highly recommended by a few of our readers, which of course caused us to take notice…

At last, we've picked up both styles of MoKo Surface cases to review. Today's review covers the MoKo Detachable Rotary Case for the Surface Pro and Surface Pro 2. This particular case doesn't come in a Surface RT-style, but Surface Pro owners should be impressed by its unique features and dignified appearance. Head past the break for our full review.

Last week the latest Xbox Windows Phone game, Kingdoms & Lords, started making its rounds to a few select markets. It would appear the soft release is no more and the new Windows Phone 8 game is now available worldwide.

Kingdoms & Lords is a medieval simulation game where you build up your kingdom, cultivate crops and livestock, train your military, battle a Dark King and conquer neighboring lands.

Microsoft has released a new advertisement for its Xbox One console. The video shows a young couple who have the next-gen console set up with multiple accounts. As well as showing exactly how easy it is to switch between profiles in a real environment, the ad also injects some humour with the boyfriend being ordered around with "Xbox" commands.

The Xbox game Grand Theft Auto V has been on the shelves for a few months now and if you've hit a few snags building your criminal empire, check out GTA V: Maps for Windows Phone.

GTA V: Maps delivers all the Los Santos maps and locations to your Windows Phone to help guide you through the game.  Layout is simple with GTA V: Maps and includes optional integration with GTA V: Cheats. It may not be an official companion app for Grand Theft Auto but it may help you avoid making that wrong turn that could end your career.