‘Galaxy S4 could outperform the iPhone’

The new Galaxy S4 could outperform the iPhone, experts claimed, after Samsung took its battle with Apple on to its rival’s home turf in a theatrical show of force.

The device — which allows users to control the screen using their eyes — is expected to pose the greatest threat yet to Apple’s flagship phone.

Industry experts predict it could even tip the balance in favour of the South Korean electronics giant as the two companies wrestle for top spot in the smartphone market.