LG
LG X screen

LG
LG K3

Features
Accelerometer, proximity
Accelerometer, proximity
Accelerometer
Memory
microSD, up to 32 GB (dedicated slot), 8/16 GB, 1.5 GB RAM
microSD, up to 256 GB (dedicated slot), 16 GB , 2 GB RAM
microSD, up to 32 GB (dedicated slot), 8 GB, 1 GB RAM
Display
720 x 1280 pixels, 16:9 ratio (~294 ppi density), IPS LCD Capacitive Touchscreen, 16M Colors, 5.0 inches, 68.9 cm2 (~66.7% screen-to-body ratio)
720 x 1280 pixels, 16:9 ratio (~298 ppi density), IPS LCD Capacitive Touchscreen, 16M Colors, 4.93 inches, 67.0 cm2 (~65.4% screen-to-body ratio), - Secondary display, 80 x 520 pixels, 1.76 inches
480 x 854 pixels, 16:9 ratio (~218 ppi density), IPS LCD Capacitive Touchscreen, 16M Colors, 4.5 inches, 55.8 cm2 (~61.6% screen-to-body ratio)
Battery
Removable Li-Ion 2125 mAh battery
Up to 9 h (2G) / Up to 14 h (3G), Non-removable Li-Po 2300 mAh battery, Up to 120 h (2G) / Up to 120 h (3G)
Removable Li-Ion 1940 mAh battery
Main Camera
1080p@30fps, LED flash, panorama, 8 MP, AF, f/2.4
1080p@30fps, LED flash, panorama, 13 MP, AF, f/2.2
720p@30fps, LED flash - LS450 only, 5 MP