Samsung Galaxy Note 7 has a pixel density of:
515.30

A.K.A. Note 7
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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Samsung Galaxy Note 7
Samsung Galaxy Note Fan Edition

Codename	Grace (Note 7) Grace R (Note FE)
Brand	Samsung Galaxy
Manufacturer	Samsung Electronics
Slogan	Note 7: The smartphone that thinks big Note FE: Unlock more (Korea/Indonesia/Malaysia)
Series	Samsung Galaxy Note
Model	Note 7: SM-N930x Note FE: SM-N935x (Last letter varies by carrier & international models)
Compatible networks	2G GSM/GPRS/EDGE – 850, 900, 1800, 1900  96% are still in distribution 2G CDMA 1xRTT – 800, 850, 1900 MHz 3G TD-SCDMA – 1900, 2000 MHz 3G UMTS/HSDPA/HSUPA/HSPA+ – 850, 900, AWS (1700), 1900, 2000, 2100 MHz 4G LTE – Bands 1-5, 7-8, 12-13, 17-20, 25-26, 28-30, 38-41
First released	Note 7: 19 August 2016 (2016-08-19) Note FE: 7 July 2017 (2017-07-07)
Discontinued	Note 7: 11 October 2016 (2016-10-11) Note FE: 30 October 2021 (2021-10-30)
Predecessor	Samsung Galaxy Note 5
Successor	Samsung Galaxy Note 8
Related	Samsung Galaxy S7/S7 Edge
Type	Smartphone
Form factor	Slate
Dimensions	153.5 mm (6.04 in) H 73.7 mm (2.90 in) W 7.9 mm (0.31 in) D
Mass	Note 7: 169 g (6.0 oz) Note FE: 167 g (5.9 oz)
Operating system	Original (Note 7): Android 6.0.1 “Marshmallow” with TouchWiz Grace UXOriginal (Note FE): Android 7.0 “Nougat” Samsung Experience 8.1Current (Note FE): Android 9.0 “Pie” with One UI 1.0
System on chip	Global (Note 7): Samsung Exynos 8890 Global (Note FE): Samsung Exynos 8890 Canada/China/US/Japan (Note 7): Qualcomm Snapdragon 820
CPU	2.3 GHz Mongoose & 1.6 GHz Cortex-A53 Octa-core 2.2 GHz Kyro & 1.6 GHz Kryo Quad-Core
GPU	Global: Mali-T880 MP12 Canada/China/US/Japan: Adreno 530
Memory	4 GB LPDDR4 RAM
Storage	64 GB UFS 2.0
Removable storage	microSDXC up to 256 GB
Battery	Note 7: 3.85 V, 3500 mAh (13.48 Wh) Li-ion battery, 15W charging, not user-replaceable[1] Note FE: 3.85 V, 3200 mAh (12.32 Wh) Li-ion battery, not user-replaceable[2]
Display	5.7 in (140 mm) 227 ppcm (518 ppi)Quad HD Super AMOLED 2560×1440 pixel resolution (16:9 aspect ratio)
Rear camera	Samsung ISOCELL S5K2L1 or Sony Exmor R IMX260 12 MP (1.4 µm), f/1.7 aperture with fast Dual Pixel autofocus Technology,[3][4][5] 4K video recording at 30 fps, 1080p at 60 fps, 720p at 240 fps
Front camera	Samsung ISOCELL S54KE6 5.0 MP f/1.7 with wide-angle lens
Connectivity	USB-C
Water resistance	IP68, up to 1.5 m (4.9 ft) for 30 minutes
Website	web.archive.org/web/20161009091334/http://www.samsung.com/global/galaxy/galaxy-note7/

This righthand infobox courtesy of Wikipedia.