In 2015, what percent of Internet users will access the web through mobile devices?

52.7 percent.

Explanation:

In 2015 52.7 percent of the internet users accessed the internet from their mobile phones.

This number has kept on increasing throughout the years and it will keep on increasing because of the lucrative offers provided by the telecom service providers on the internet data packs and the revolution in India brought by Reliance Jio in 2016 because of which the rates of the data packs declined very sharply and also by every telecom service provider because of reliance Jio.