Taiwanese smartphone maker HTC is working on tablets powered by Microsoft Windows as it looks to take on Apple and Google, according to reports.

According to Bloomberg, HTC is planning to launch a 12-inch tablet and a 7-inch version that would be able to make phone calls.

Expected to be based on Windows RT version of Microsoft’s operating system, the new devices will use chips manufactured by ARM and are expected to be launched in 2013.

The new 7-inch tablet is claimed to be the first of that size for Windows RT, as the US software maker attempts to rival the iPad mini, Amazon’s Kindle Fire and Google’s Nexus 7 in the smaller, cheaper tablets arena.

According to reports HTC was said to be working on a tablet powered by Windows 8, but ditched the idea when it realised it would prove expensive.