Do you know how many app downloads in Christmas week? 1.2 billion, Can you imagine that? What a zillion! However, that’s reasonable, when you get iPod, iPhone or iPad as the Christmas present, what’s the first thing you want to do? Download your favorite apps of course, not to mention Apple released so attractive promotions among Christmas.

Flurry claims estimates that 1.2 billion applications were downloaded during what it calls the “holiday power week.” It also believes that more than 20 million iOS and Android devices were activated during the holiday period. Seriously, I don’t know if you have made your contribution to that statistic, but I did, I can’t remember how many apps I have downloaded on my iPod touch, transferring previous apps, videos, songs to my PC with ipod computer transfer to save space for the new apps. Maybe you have done the same thing, maybe you are one of the biggest contributors of App Store’s income.

Whether you accept that methodology or not, the premise behind the 1.2 billion downloads seems sensible. iOS devices (and their Android counterparts) probably found their way on to many a holiday gift list this year. While you’d expect to see a burst of downloading on Christmas day immediately after presents are opened, new device owners are unlikely to confine their App Store shopping sprees to a single day. Existing device owners are also busy cashing in their App Store gift cards on new software. And since smartphones pose a gift-giving challenge thanks to contracts with wireless carriers, there’s also the prospect of new iPhone owners activating their devices in the days after Christmas for adding further fuel to the downloading fire.

While Apple does not formally release data about the number of devices being turned on for the first time, Google has confirmed that over 3.7 million Android devices were activated on Christmas Eve and Christmas Day. Since Android has such massive amounts, you certainly can imagine the situation of iOS, which is definitely bigger than that. Think about how many Apple users out there? iPod, iPhone, iPad, almost everyone has one of them, especially iPad, which is the most wanted thing in Christmas gift list, and if you are an iPad user, here is a trick that you must know, which is how to sync ipad 2 to computer, so that you won’t lose one thing that you don’t want to lose in your iPad.

The United States accounted for 42.3 percent of the total with 509 million downloads, followed by Chine with 99 million, The U.K. with 81 million, and Canada with 41 million. New device activations played a role in the record breaking app download numbers. Flurry’s estimates put the total number of iOS and Android devices activated during the Christmas week at 20 million, and the company expects those numbers to continue to climb.

Now the Christmas shopping season is almost going to end, but Apple’s promotion just begins, it will releases Red Friday in Asia which begins from Jan.6, and it just gonna make that number becomes much bigger.