Complex sentence: With 9.2 mm, it's LG's thinnest smartphone at the time of its release and slightly smaller than the iPhone 4.LG Optimus Black features WVGA NOVA display which is brighter than competitor display with brightness of 700nits.
Split into simpler sentences: With 9.2 mm, it's LG's thinnest smartphone at the time of its release and is slightly smaller than the iPhone 4. The LG Optimus Black features a WVGA NOVA display which is brighter than competitor displays with brightness of 700nits.