Psyren Vol 1

Psyren Vol 1 by Toshiaki Iwashiro. A Shonen manga rated Teen, published in English by Viz Media in 2011.

Ageha Yoshina finds a red telephone card labeled Psyren, and when he answers the call, he is transported to a ruined future Japan. Now he must survive the Psyren game and use psychic powers to change the future.