This feature was there in 3AC when I traveled in December 2017. Even though the speed was slow, connectivity was there. Maybe IR removed it because people were downloading too much.
please wait...Translate to HindiIs suvidha ko December 2017 mein jab main gaya tha, woh time 3AC mein thi. Gati dheemi thi but connection tha. Shayad IR ne ise hataya kyunki log zyada download kar rahe the.