It's thin, light and made from plastic, with fairly middling specs, but the second screen helps the X Screen stand out from the rest of the mid-range competition. Are two screens worth having on your smartphone, though? Based on a few short minutes with the X Screen, we're not sure. If battery life doesn't take a major hit then having notifications at a glance sounds good, but it'll proboably drain more juice than an OLED panel in the long run. LG hasn't set a price or official release date yet, so it's impossible to say how it stacks up against the rest of the field, but expect the X Screen to challenge other mid-range phones when it eventually arrives towards the end of March.