LG AS740 - Manual (Page 171)

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To zoom in or out on a webpage
You may not be able to zoom in or out on webpages that are designed
for mobile devices.
1 Slide your finger lightly on the screen to reveal the Zoom control
.
2 Touch the plus or minus side of the Zoom control to zoom in or out.
To quickly zoom into a section of a webpage
You may not be able to zoom in or out on webpages that are designed
for mobile devices.
▶ Double-tap on the section of the webpage you want to view. The
webpage zooms in so that you can read all the text in that section by
scrolling up and down.
▶ To return to page overview, double-tap the screen again.
Browser