OnePlus 6 has a pixel density of:
401.73

A.K.A. OnePlus 6
Released: 2018

Resolution: 2280×1080 6.28″ display

Totaling 2.46mp (megapixels) and having a PPI of 401.73

Category: Phone
Tags:

OnePlus 6

Codename	enchilada
Brand	OnePlus
Manufacturer	OnePlus
Slogan	The Speed You Need[1]
Model	A6000, A6003
Compatible networks	2G, 3G, 4G
First released	May 22, 2018; 3 years ago (2018-05-22)
Predecessor	OnePlus 5T
Successor	OnePlus 6T
Type	Phablet
Form factor	Slate
Dimensions	155.7 mm (6.13 in) H 75.4 mm (2.97 in) W 7.75 mm (0.305 in) D
Mass	177 g (6.2 oz)
Operating system	OxygenOS (based on Android Oreo, upgradable to Android 10)
System on chip	Qualcomm Snapdragon 845[2]
CPU	Octa-core (4×2.8 GHz + 4×1.8 GHz) Kryo
GPU	Adreno 630
Memory	6 or 8 GB LPDDR4X RAM
Storage	64, 128, or 256 GB UFS 2.1
Battery	3,300 mAh Li-Ion with Dash Charge technology
Data inputs	Fingerprint scanner (rear-mounted), Accelerometer, gyroscope, proximity sensor, electronic compass
Display	6.28 in (160 mm) 1080p (2280 ×1080 pixels) Full-HD+ Optic AMOLED / DCI-P3 (402 ppi) with 19:9 aspect ratio
Rear camera	16 MP Sony Exmor IMX519 (f/1.7, OIS + EIS) + 20 MP Sony Exmor IMX376K (f/1.7), phase detection autofocus, dual-LED flash, Video 4K at 30 or 60fps, 1080p at 30, 60 or 240 fps, 720p at 30 or 480 fps
Front camera	16 MP Sony Exmor IMX371 (f/2.0, EIS, HDR), Video 1080p at 30 fps, 720p at 30 fps
Connectivity	3G, 4G VoLTE, 5G, Bluetooth 5.0 with aptX, NFC, 2×2 MIMO WiFi 802.11a/b/g/n/ac, GPS, GLONASS, BeiDou and Galileo, USB-C
Website	oneplus.com/6

This righthand infobox courtesy of Wikipedia.