Bottom line: Which one is better?
LG V40 is better when we compare LG V30 Vs V40 as it has high battery capacity, bigger screen size, has a powerful CPU and 3 more megapixels (front camera).
Thickness; LG V30 is 7.3mm
Width; LG V30 is 75.4mm
Weight; LG V30 is 158g.
Dustproof and water-resistant; both phones are dustproof and water-resistant.
Height; LG V30 is 151.7mm.
Display type; both phones have POLED.
Bazelless display; both phones have this feature.
Pixel density; LG V30 has 537ppi while LG V40 has 522ppi.
Screen protection; both phones have Corning Gorilla Glass v5.
Screen size; LG V30 is 6.0” while LG V40 is 6.3”.
Screen resolution; both phones have 1440 x 2960px
Touchscreen; both phones have capacitive touchscreen and multi-touch.
Features; both phones have digital Zoom, auto flash, face detection and touch to focus. LG V40 has smile detection.
Image resolution; both phones have 4616 x 3464px.
Autofocus; LG V30 has phase detection and Laser autofocus while LG V40 has phase detection.
Shooting modes; both phones have continuous shooting and HDR.
Resolution; LG V30 has 5MP whereas LG V40 has 8MP.
Physical aperture; LG V30 has F2.2
Optical image stabilization; the two phones have this feature.
Flash; both phones have LED.
Video recording; LG V30 has 3840×2160 (30fps), 1920×1080 (30fps) and 1280×720 (30fps). While LG V40 has 3840×2160 (30fps)
PERFORMANCE & FEATURES
Chipset; LG V30 has Qualcomm Snapdragon 835MSM8998 whereas LG V40 has Qualcomm Snapdragon 845.
Graphics; LG V30 has Adreno 540 while LG V40 has Adreno 630.
Processor; LG V30 has Octa-core (2.45GHz, Quad-core, Kryo 280 + 1.9GHz, Quad-core, Kryo 280) whereas LG V40 has Octa-core (2.8GHz, Quad-core, Kryo 385 + 1.8GHz, Quad-core, Kryo 385).
Architecture; both phones have 64 bit.
RAM; both phones have 4GB.
User available storage; LG V30 has up to 50GB.
Internal memory; both phones have 64GB.
Expandable memory; both phones have up to 2TB.
Sensors; both phones have Light, Proximity, Accelerometer, Compass and Gyroscope. LG V30 has Barometer.
Loudspeaker; both phones have loudspeakers.
Audio jack; the two phones have 3.5mm.
Capacity; LG V30 has 3300mAh while LG V40 has 3500mAh
Wireless charging; both phones support wireless charging.
Quick charging; both phones support quick charging.
Wi-Fi; both phones have 802.11, a/ac/b//g/n/n 5GHz.
Bluetooth; both phones have v5.0
NFC; the two phones have NFC.
GPS; both phones have A-GPS and Glonass.
LG V40 is better smartphone in this review as it has superior features.$ 467.99