Smartphone adoption in Japan during December 2010 increased with seven million mobile users (7% of the total mobile market) being smartphone users, an increase of 33.5% from September 2010, according to a new report by comScore.

The report revealed that many smartphones in Japan have advanced capabilities such as mobile wallet, 1seg TV and waterproof features, all which encourage current feature phone users to switch to smartphone devices.

In addition, the Japanese mobile users are continuing to adopt smartphone device, which is supported by the significant increase in Apple and Google subscribers.

The research firm said that compared to other mobile markets such as the US and Europe, smartphone adoption (defined as those phones that use the Microsoft, Google, Apple, RIM or Palm platforms) has remained relatively small in Japan.

The report said that in December 2010, 3.8 million smartphone subscribers used Apple devices, up 48% from June 2010.

Google Android devices witnessed a surge in users growing to more than 2 million in December 2010, up from 435,000 users in June 2010.