Google Claims 77% of All Android Phones Run Eclair or Froyo
Recent statistics collected by Google via the Android Market indicate that 77% of all Android devices are running Android 2.1 Eclair, or Android 2.2 Froyo. The results, published at Google's Platform Versions page at their Android Developers site also show that only 7.9% of all Android devices are running 1.5 Cupcake, and 15% running Android 1.6.
The above chart, taken from Google's Platform Versions data page, also tells us that there are nearly as many devices running 2.2 Froyo as there are running 2.1 Eclair.
The data was collected by identifying how many devices accessed the Android Market in a given time period, and what version of Android they were running. An important factor to consider is the fact that a lot of the devices running Android 2.1 will most likely be updated to support Android 2.2; it is unlikely that older devices such as the T-Mobile G1 or HTC Magic will even receive official updates to Android 2.1, let alone 2.2.
Some carriers or manufacturers, however, will choose not to upgrade certain devices to a newer Android version, thus adding complication to these data. They also do not include the modifications of the operating system by individuals, such as rooting, which also complicates things.
Also take note of the sudden increase of 2.2 Froyo devices accessing the Android Market just after 08/15 in the second chart, above.