LG V20 has a pixel density of:
515.30

A.K.A.
Released: 2016

Resolution: 2560×1440 5.7″ display

Quad HD (QHD) 2560×1440, 16:9 aspect ratio

Totaling 3.69mp (megapixels) and having a PPI of 515.30

Category: Phone
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LG V20

LG V20
Brand	LG Electronics
Manufacturer	LG Electronics
Slogan	Life’s Good When You Play More[1]
Series	V series LG Ultra-Premium Category
Model	Asia: H990N (Hong Kong); H990DS (Global Dual-SIM); America: H910 (AT&T); H918 (T-Mobile); LS997 (Sprint); US996 (US Cellular); VS995 (Verizon); H990T (Mexico); H915 (Canada)
Compatible networks	4G+/LTE-AX12 LTE Cat.12 up to 600 Mbps download speed
First released	September 29, 2016; 4 years ago (2016-09-29) (South Korea)October 14, 2016; 4 years ago (2016-10-14) (Philippines)[2]October 21, 2016; 4 years ago (2016-10-21) (U.S.A.)November 2016; 4 years ago (2016-11) (United Arab Emirates)[3]November 8, 2016; 4 years ago (2016-11-08) (Australia)[4]December 2016; 3 years ago (2016-12) (India)[5]
Predecessor	LG V10
Successor	LG V30
Related	LG G5, LG Q8
Form factor	Slate
Dimensions	159.7 x 78.1 x 7.6 mm
Mass	174 g (6.1 oz)
Operating system	Original: Android 7.0 “Nougat” Current: Android 9.0 “Pie”
System on chip	Qualcomm Snapdragon 820
CPU	Quad-core (2×2.15 GHz Kryo & 2×1.6 GHz Kryo), HMP (2clusters), MSM8996, ARMv8 64bit architecture, 14 nm
GPU	Adreno 530 with VulkanAPI 1.0 full support
Memory	4 GB LPDDR4 RAM (3.7 GB usable)
Storage	64GB (52GB usable), encrypted EXT4 Filesystem
Removable storage	microSDXC up to 2 TB*(TexFAT Filesystem)
Battery	3,200 mAh/12.3Wh (removable); LG BL-44E1F Li-Ion
Display	5.7 in (140 mm) QuadHD 2560×1440 1440p (515 ppi) LG QuantumIPS LCD Corning Gorilla Glass 4 Screen ProtectionSecondary display 2.1 in (53 mm) 160×1040
Rear camera	16 MP f/1.8 aperture 75° normal angle lens8 MP f/2.4 aperture 135° wide angle lensOIS,2x Optical zoom, 4K/30fps video recording, Support Google CameraAPI2 manual mode,PDAF(Phase Detection AutoFocus) and Laser AF(LDAF) with Contrast AF(Different LDAF-PDAF),Dual LED flash
Front camera	5 MP f/1.9 aperture,83/120° wide-angle lens, FullHD 1080p video recording
Sound	Bottom-firing mono speaker, ESS Sabre “32bit Hi-Fi” QuadDAC+Headphones Amplifer
Connectivity	USB-C 1.0 reversible USB2.0 speed, Bluetooth 4.2 with AptX-HD,LE, A2DP, NFC(File sending and Tap&Pay), GLONASS GPS support, IR for LG Remote, Wi-Fi a/b/g/n/ac with dual-band(2.4GHz and 5GHz), FM radio with RDS)
Other	MIL-STD810G US Military standard Drop protection, AL6013 body,PolyCarbonate plastic up&down**, Metal battery cover with NFC antenna, rear-mounted Fast Fingerprint sensor, QuickCharge 3.0, USB Power Delivery Rev. 2, Steady Record 2.0, 24bit/192kHz Studio Quality sound recording to in FLAC audio format,Barometer sensor,”Game battery saver” energy saving function
Website	www.lg.com/us/mobile-phones/v20

This righthand infobox courtesy of Wikipedia.