“Of those 1.3 million daily activations, Schmidt said that around 70,000 were for Android tablets, and he put the installed base of Android devices at around 500 million devices.”
see The H Open – Google: 1.3 million Android devices activated every day.
It is puzzling why Android/Linux has been such a spectacular success for smart phones yet continues to lose ground to Apple’s walled garden on tablets. Is it the lawsuits? The cool? The quality? The price? I don’t see it. Retailers are offering a variety of Android/Linux tablets and they are best-sellers. Perhaps OEMs are not letting them connect to Google’s market somehow so they are not being counted… Perhaps the problem is that many still do not run Android 4.x.