Motorola Moto G51 5G vs Motorola Moto G31 Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

Motorola Moto G51 5G Motorola Moto G31
Released · December 2021
Released · Dec 06, 2021
6.8-inch
6.4-inch
Triple camera
Triple camera
4GB · 64GB
4GB · 64GB
5000 mAh
5000 mAh
Check prices

Availability

Officially announced
Nov 18, 2021 Nov 18, 2021

Design

Dimensions
6.71 x 3.01 x 0.36 inches
170.47 x 76.54 x 9.13 mm
6.37 x 2.91 x 0.34 inches
161.89 x 73.87 x 8.55 mm
Weight
7.34 oz (208.0 g) 6.38 oz (181.0 g)
Resistance
Yes; IP52
Biometrics
Fingerprint (touch) Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key, Other Right: Volume control, Lock/Unlock key, Other
Colors
Indigo Blue, Bright Silver, Aqua Blue Mineral Grey, Baby Blue

Display

Size
6.8-inch, 85.68% screen-to-body 6.4-inch, 82.69% screen-to-body
Type
IPS LCD, 120Hz IPS LCD, 60Hz
Resolution
2400x1080px, 20:9 ratio, 387 PPI 2400x1080px, 20:9 ratio, 411 PPI

Hardware

System chip
Snapdragon 480 SM4350 (8 nm) MediaTek Helio G85 MT6769Z (12 nm)
Processor
Octa-core
2000 MHz
Kryo 460
Octa-core
2000 MHz
Cortex
GPU
Adreno 619 Mali-G52 MC2
Memory
4GB/64GB 4GB/64GB
4GB/128GB
Storage expansion
microSDXC up to 512 GB microSDXC up to 1024 GB
OS
Android (11) Android (11)

Battery

Type
5000 mAh 5000 mAh
Charge speed
Wired: 10.0W Wired: 10.0W

Camera

Rear
Triple camera Triple camera
Main camera
50 MP (PDAF)
Aperture size: F1.8
Pixel size: 0.64 μm
50 MP (Autofocus)
Aperture size: F1.8
Pixel size: 1.28 μm
Second camera
8 MP (Ultra-wide)
Aperture size: F2.2
Pixel size: 1.12 μm
8 MP (Ultra-wide)
Aperture size: F2.2
Pixel size: 1.12 μm
Third camera
2 MP (Macro)
Aperture size: F2.4
Pixel size: 1.75 μm
2 MP (Macro)
Aperture size: F2.4
Pixel size: 1.75 μm
Flash
LED
Video recording
1080p (240 fps) 1080p (30 fps)
Front
13 MP 13 MP
Video capture: 1080p

Connectivity & Features

Bluetooth
5.1 5.0
WLAN
a,b,g,n,ac
Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac
a,b,g,n,ac,dual-band
Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac
USB
Type-C, USB 2.0 Type-C, USB 2.0
Sensors
Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Location
GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning
Other
NFC NFC

Multimedia

Headphones
3.5mm jack 3.5mm jack
Speakers
Earpiece, Loudspeaker Earpiece, Loudspeaker
Features
Dolby Atmos
Screen mirroring
Wireless screen share Wireless screen share
Radio
FM, Stereo, RDS FM, Stereo, RDS
Additional microphone(s)
Noise cancellation Noise cancellation

Cellular

5G Bands
n1, n3, n5, n7, n8, n20, n28, n38, n40, n41, n77, n78
4G (FDD) Bands
1, 2, 3, 5, 7, 8, 18, 20, 26, 28, 32 1, 2, 3, 5, 7, 8, 12, 13, 18, 19, 20, 26, 28
4G (TDD) Bands
38, 40, 41, 42, 43 38, 40, 41
3G Bands
1, 2, 5, 8, 19 1, 2, 4, 5, 8, 19
Data Speed
LTE-A Cat 7 (300/100 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s
Dual SIM
Yes Yes
SIM type
Nano SIM Nano SIM

Regulatory Approval

FCC approval
Date approved: Nov 03, 2021
FCC ID value: IHDT56ZX4
Measured SAR
Head: 1.17 W/kg
Body: 1.44 W/kg
Simultaneous Transmission: 1.59 W/kg
Wireless Router: 1.44 W/kg

Alternative variants

With 128GB internal storage
Memory 128GB
FCC OKs Cingular\'s purchase of AT&T Wireless