Although the device was praised for its durability and overall performance, the G Flex's display was criticized for having bleeding edge quality, with a 720p panel at only 245 pixels per inch (as opposed to the 1080p screens used by other major high-end phones), a grainy appearance, and noticeable image retention.

The G Flex was also panned for its large size, high price, and for lacking functionality specifically meant to take advantage of the device's curved screen.

LG designer Ramchan Woo demonstrated how the device could withstand certain types of abuse without any major damage, such as being dropped, stepped on, and sat on.

LG claimed that the treatment would improve the screen's durability by around 20%, especially near the edges of the display[2][6] As with the original G Flex, it will be positioned as a niche product intended for a premium market.

[2][6] The G Flex 2's physical design resembles that of the LG G3, consisting of a curved polycarbonate shell, with volume and power buttons located on the rear of the device directly below the camera.