Samsung has officially launched the Galaxy J2, the companys latest entry-level 4G smartphone in India. It has a new Ultra Data Saving mode powered by Opera Max that let users to allow and block individual apps from using mobile data and save data by enabling data optimization. Ultra Data Saving mode promises up to 50% savings in data across all the content and most apps and also frees up to 11% RAM. The smartphone has metallic finish on the sides and has faux leather back. Samsung said that the Galaxy J2 has been developed in Samsungs Indian R&D facility.