Google’s Nexus 4 has undoubtedly been one of the hottest Android handsets on sale this holiday season, and it’s been selling rapidly since its release back in November. The search giant has even had to apologize for the difficulties LG is facing in keeping up with the impressive demand. Exactly how many Nexus 4 handsets have been sold, however, is somewhat a mystery.

Google never announces its device sales, and LG’s been keeping quiet when it comes to the Nexus 4, too. However, some Android enthusiasts have been keeping track of Nexus 4 serial numbers, and they estimate that around 400,000 units were produced by the end of 2012.

Huawei has already confirmed that it has a number of new handsets lined up for CES 2013 next week, two of which will be powered by Android. The Ascend D2 is arguably the most exciting one, and as you can see from its leaked press shot above, it’s a very good-looking device. In fact, its chamfered silver bezel with embedded white antennas make it look a lot like Apple’s white iPhone 5.

Last Tuesday, a rumor surfaced regarding an exciting new Android handset from Sony that will reportedly offer a 5-inch 1080p display like the HTC Droid DNA. Called the Sony Xperia Yuga, the device is expected to debut in early 2013, but images of its prototype have already surfaced.

Despite its lack of LTE, the Nexus 4 has been hugely popular.

Google’s new Nexus 4 smartphone has been a hugely popular handset since making its debut back in November, but supply issues have somewhat spoiled what should have been a successful launch. When the handset is made available through Google Play, it doesn’t take long for stock to disappear again, and those who do get an order in on time are forced to wait weeks for their device to arrive.

Dan Cobley, managing director of Google U.K. & Ireland, says the “scarce” supplies from LG are “unacceptable.” He’s issued an “unreserved apology” to Nexus 4 customers, but says Google hopes to fulfill “pre-Christmas” delivery promises by sending out a new batch of handsets this week.

Strong sales of the iPhone 5 have helped Apple grab more than a quarter of the global LTE device market last quarter, despite the handset’s short time on sale. The Cupertino company now commands 27% of the market share, while arch rival Samsung’s 40% share means it maintains the top spot for the seventh quarter in a row.

However, increasing competition from its rivals means Samsung’s share has quickly slipped by more than 10% from 50.9% in the previous quarter.