Motorola Moto G4 has a pixel density of:
400.53

A.K.A.
Released: 2016

Resolution: 1080×1920 5.5″ display

Totaling mp (megapixels) and having a PPI of 400.53

Category: Phone
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Moto G4

Moto G4 Plus XT1641 LATAM Model with original OS Android 6.0 Marshmallow
Codename	G4 Play: harpia G4/G4 Plus: athene
Brand	Motorola
Manufacturer	Motorola Mobility
Slogan	Never miss out on what matters most
Series	Moto
First released	May 17, 2016 (2016-05-17)
Predecessor	Moto G (3rd generation)
Successor	Moto G5
Related	Moto E3 Power Moto Z
Type	Smartphone
Form factor	Slate
Dimensions	G4 Play: 144.4 mm (5.69 in) H 72 mm (2.8 in) W 9.9 mm (0.39 in) D G4, G4 Plus: 153 mm (6.0 in) H 76.6 mm (3.02 in) W 9.8 mm (0.39 in) D
Mass	G4 Play: 137 g (4.8 oz) G4, G4 Plus: 155 g (5.5 oz)
Operating system	Original: Android 6.0.1 “Marshmallow” Current: Android 7.0 “Nougat” (8.1 “Oreo” on G4 Plus)
System on chip	Qualcomm Snapdragon 410 (for Moto G4 Play)Qualcomm Snapdragon 617 (for Moto G4 and Moto G4 Plus)
CPU	1.2 GHz (Moto G4 Play)4×1.5 GHz 4×1.2 GHz 64-bit (Moto G4 and Moto G4 Plus)
GPU	Adreno 306 (Moto G4 Play)Adreno 405 (Moto G4 and Moto G4 Plus)
Memory	1 or 2 GB (Moto G4 Play)2 or 3 GB (Moto G4)2, 3 or 4 GB (Moto G4 Plus)
Storage	8 or 16 GB (Moto G4 Play)16 or 32 GB (Moto G4)16, 32 or 64 GB (Moto G4 Plus) All 3 models are expandable via microSD card slot
Removable storage	microSDXC up to 128 GB
Battery	2800 mAh Li-po removable (Moto G4 Play)3000 mAh Li-ion non-removable (Moto G4 and Moto G4 Plus)
Display	G4 Play: 5.0″ (127 mm) 1280 x 720 (294 ppi) 720p G4, G4 Plus: 5.5″ (140 mm) 1920 x 1080 (401 ppi) 1080p with Corning Gorilla Glass 3
Rear camera	13 MP (16 MP on Moto G4 Plus), f2.0 aperture, dual CCT dual tone flash, 1080p video recording @ 30fps, and slow motion record
Front camera	5 MP, f2.2
Sound	Front-ported loud speaker, 2-Mics
Connectivity	Micro USB, 3.5 mm headset jack
Development status	Discontinued
Website	http://www.motorola.com/us/products/moto-g-family

This righthand infobox courtesy of Wikipedia.