Screen size
Harmony5.3"
Q31Winner: 5.7"+7%
Quick verdict
Q31 leads the measured specs 9-2.
Measured wins
Harmony
2
spec wins
Ties
6
equal specs
Q31
9
spec wins
Overall winner
Screen size
Technology
Harmony
GSM / HSPA / LTE
Q31
GSM / HSPA / LTE
2G bands
Harmony
GSM 850 / 900 / 1800 / 1900
Q31
GSM 850 / 900 / 1800 / 1900
3G bands
Harmony
HSDPA 850 / 1700(AWS) / 1900
Q31
HSDPA 850 / 900 / 1900 / 2100
4G bands
Harmony
2, 4, 5, 12
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
equal specsBattery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Q31
LTE
Speed
Harmony
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Q31
HSPA, LTE
Announced
Harmony
2017, April. Released 2017, April
Q31
2020, September 17. Released 2020, September 25
Status
Harmony
Discontinued
Q31
Discontinued
Dimensions
Harmony
149.9 x 76.2 x 7.6 mm (5.90 x 3.00 x 0.30 in)
Q31
147.9 x 71 x 8.7 mm (5.82 x 2.80 x 0.34 in)
Weight
Harmony
141.8 g (5.01 oz)
Q31
145 g (5.11 oz)
SIM
Harmony
Nano-SIM
Q31
Nano-SIM
Other
Harmony
-
Q31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Type
Harmony
IPS LCD
Q31
IPS LCD
Size
Harmony
5.3 inches, 77.4 cm2 (~67.8% screen-to-body ratio)
Q31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Resolution
Harmony
720 x 1280 pixels, 16:9 ratio (~277 ppi density)
Q31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
OS
Harmony
Android 7.0 (Nougat)
Q31
Android 10
Chipset
Harmony
Qualcomm MSM8917 Snapdragon 425 (28 nm)
Q31
Mediatek MT6762 Helio P22 (12 nm)
CPU
Harmony
Quad-core 1.4 GHz Cortex-A53
Q31
Octa-core 2.0 GHz Cortex-A53
GPU
Harmony
Adreno 308
Q31
PowerVR GE8320
Card slot
Harmony
microSDXC (dedicated slot)
Q31
microSDXC
Internal
Harmony
16GB 1.5GB RAM
Q31
32GB 3GB RAM
Other
Harmony
eMMC 5.1
Q31
eMMC 5.1
Single
Harmony
8 MP, AF
Q31
-
Features
Harmony
LED flash, HDR
Q31
LED flash, panorama, HDR
Video
Harmony
1080p@30fps
Q31
1080p@30fps
Dual
Harmony
-
Q31
13 MP, f/1.8, 27mm (wide), 1/3.1", 1.12µm, PDAF 5 MP, f/2.2, 120˚ (ultrawide), 1/5.0", 1.12µm
Single
Harmony
5 MP
Q31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Video
Harmony
Q31
1080p@30fps
Loudspeaker
Harmony
Yes
Q31
Yes
3.5mm jack
Harmony
Yes
Q31
Yes
WLAN
Harmony
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Q31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
Harmony
4.2, A2DP, LE
Q31
5.0, A2DP, LE
Positioning
Harmony
GPS
Q31
GPS
NFC
Harmony
No
Q31
No
Radio
Harmony
Yes
Q31
No
USB
Harmony
microUSB 2.0
Q31
microUSB 2.0
Sensors
Harmony
Accelerometer, proximity, compass
Q31
Accelerometer
Type
Harmony
Li-Ion 2800 mAh, removable
Q31
Li-Ion 3000 mAh
Stand-by
Harmony
Up to 350 h (3G)
Q31
-
Talk time
Harmony
Up to 14 h (3G)
Q31
-
Colors
Harmony
Black
Q31
Silver
Models
Harmony
M257
Q31
LM-Q310N
Price
Harmony
About 90 EUR
Q31
About 150 EUR