the zoom on this phone is really terrible does anybody know how to increase the amount it zooms by they say its x4 but it hardly reaches anywhere? also does anybody know how to maximise the quality and what does ISO, exposure metering,focus mode actually mean and whats bthe best choice out of thier options to maximise quality????????

The choices are:

ISO (100,200,400,Auto)

Exposure metering (spot, martrix)
Focus Mode (Auto focus, Pan focus)