The two most popular mobile platforms – iOS and Android – both saw a record breaking Christmas this year, in terms of device activations as well as app downloads. They generally see a sharp rise around Christmas every year, as device sales are boosted by people giving them away as gifts.

According to Flurry, the total new iOS and Android device activations on Christmas Day were 6.8 million, compared to just 1.5 million activations on any average day in December. The number is also much higher than the activations on Christmas Day 2010, which were just around 2.8 million.

Naturally, there was also a significant rise in the number of app downloads this Christmas. While around 108 million iOS and Android apps were downloaded on any average day in December, Christmas Day saw around 242 millon app downloads.

Note: Andy Rubin just posted on Twitter that around 3.7 million Android devices were activated on December 24 and 25. Assuming that the device activations were split equally on both days, around 1.85 million Android devices were activated on Christmas Day. This means that the number of iOS devices activated on that day were close to 5 million, much higher than Android.

Even if we assume that a majority of the 3.7 million Android devices were activated on December 25, the number of iOS device activations was likely much more than the number of Android device activations.

UPDATE: There were 3.7M Android devices activated on 12/24 and 12/25.

— Andy Rubin (@Arubin) December 28, 2011