LG has developed something of a cult following in the smartphone enthusiast world since it introduced the G2 back in 2013. With the G3, it became the first major smartphone OEM to bring a QHD (2.5K) display, among the first to use the Snapdragon 801 processor, introduced a great camera with OIS, and generally built a fast, bleeding-edge phone.

The G4 could be seen as a largely corrective measure - mostly existing to improve on its predecessor's pitfalls. The G3's display was criticized as dull and lacking much in the way of brightness. The G4's has much better contrast, improved viewing angles, output, and uses less power.

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