Kazan, Russian Federation - Sep 15, 2017: Samsung s8 open Twitter application,Twitter is an online social networking and microblogging service that enables users to send and read "tweets" Shutterstock Image - Kazan, Russian Federation - Sep 15, 2017: Samsung s8 open Twitter application,Twitter is an online social networking and microblogging service that enables users to send and read "tweets" - ID: 740633305