NTT DoCoMo will release a Tizen smartphone within Japan in the summer of this year. One feature that will be incorporated will be the LINE messaging service which will be deeply integrated within the Tizen smartphone bringing a more in-depth experience. NTT DoCoMo have been working with LINE to maximize the potential and serves of LINE which includes free calls via VoIP.
"LINE" is a platform centered on the chat. I want to deepen the integration within the Tizen smartphone" - Kaoru Kato ( CEO of NTT DoCoMo)
Kaoru Kato stated that it takes a little longer to integrate a variety of features and services within Tizen due to the infancy of the Operating System.
Source Tizen Indonesia