The smartphone features a rear camera featuring a F1.8 aperture lens and 16MP resolution supported by Color Spectrum Sensor (CSS) and a new Manual Mode. It is the first smartphone to utilize Qualcomm’s newest Snapdragon™ 808 Processor with X10 LTE for the best balance of performance and power savings.

The device gets its power from a high-capacity 3,000mAh removable battery and supporting Quick Charge 2.0 (enabled with Quick Charge 2.0 certified adapter, sold separately).

The G4 also has a plethora of manual controls, rivaling those of full-body cameras known as single-lens reflex, or SLR. LG said no other major smartphone released "this year" has that capability.

LG was careful about the phrasing, as older phones from Nokia — now part of Microsoft — have that level of control. The feature was popular among some experienced photographers, though most people are fine with automatic settings.

The G4 differs in letting people save images in RAW format, which permits a greater degree of editing. Most cameras use JPEG, which takes less storage space but introduces distortion in the compression.

One nice feature is the ability to snap a photo by pressing the power button on the back twice, even if the phone's display is off. Samsung's S6 launches the camera with the double press of the home button, but the user still has to then take the shot. LG also made a dig at Samsung for this, without naming the company.