Screen size
Q315.7"
Q51Winner: 6.5"+12%
Quick verdict
Q51 leads the measured specs 6-2.
Measured wins
Q31
2
spec wins
Ties
10
equal specs
Q51
6
spec wins
Overall winner
Screen size
Technology
Q31
GSM / HSPA / LTE
Q51
GSM / HSPA / LTE
2G bands
Q31
GSM 850 / 900 / 1800 / 1900
Q51
GSM 850 / 900 / 1800 / 1900
3G bands
Q31
HSDPA 850 / 900 / 1900 / 2100
Q51
HSDPA 850 / 900 / 1900 / 2100
4G bands
Q31
LTE
Resolution
equal specsRefresh rate
Peak brightness
Pixel density
CPU speed
equal specsRAM
equal specsStorage
equal specsMain camera
equal specsFront camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
Q51
1, 3, 7, 8, 20
Speed
Q31
HSPA, LTE
Q51
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/75 Mbps
Announced
Q31
2020, September 17. Released 2020, September 25
Q51
2020, February 25. Released 2020, February 26
Status
Q31
Discontinued
Q51
Discontinued
Dimensions
Q31
147.9 x 71 x 8.7 mm (5.82 x 2.80 x 0.34 in)
Q51
164.5 x 77.5 x 8.4 mm (6.48 x 3.05 x 0.33 in)
Weight
Q31
145 g (5.11 oz)
Q51
-
SIM
Q31
Nano-SIM
Q51
Nano-SIM + Nano-SIM
Other
Q31
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Q51
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Type
Q31
IPS LCD
Q51
IPS LCD
Size
Q31
5.7 inches, 81.1 cm2 (~77.2% screen-to-body ratio)
Q51
6.5 inches, 105.5 cm2 (~82.7% screen-to-body ratio)
Resolution
Q31
720 x 1520 pixels, 19:9 ratio (~295 ppi density)
Q51
720 x 1520 pixels, 19:9 ratio (~259 ppi density)
OS
Q31
Android 10
Q51
Android 10
Chipset
Q31
Mediatek MT6762 Helio P22 (12 nm)
Q51
Mediatek MT6762 Helio P22 (12 nm)
CPU
Q31
Octa-core 2.0 GHz Cortex-A53
Q51
Octa-core 2.0 GHz Cortex-A53
GPU
Q31
PowerVR GE8320
Q51
PowerVR GE8320
Card slot
Q31
microSDXC
Q51
microSDXC (dedicated slot)
Internal
Q31
32GB 3GB RAM
Q51
32GB 3GB RAM
Other
Q31
eMMC 5.1
Q51
eMMC 5.1
Dual
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
Q51
-
Features
Q31
LED flash, panorama, HDR
Q51
LED flash, panorama, HDR
Video
Q31
1080p@30fps
Q51
1080p@30fps
Triple
Q31
-
Q51
13 MP, (wide), PDAF 5 MP, 13mm (ultrawide) Auxiliary lens
Single
Q31
5 MP, f/2.2, 24mm (wide), 1/5.0", 1.12µm
Q51
13 MP, (wide), 1/3.1", 1.12µm
Video
Q31
1080p@30fps
Q51
1080p@30fps
Loudspeaker
Q31
Yes
Q51
Yes, with stereo speakers
3.5mm jack
Q31
Yes
Q51
Yes
WLAN
Q31
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Q51
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA
Bluetooth
Q31
5.0, A2DP, LE
Q51
5.0, A2DP, LE
Positioning
Q31
GPS
Q51
GPS
NFC
Q31
No
Q51
Yes
Radio
Q31
No
Q51
No
USB
Q31
microUSB 2.0
Q51
USB Type-C 2.0
Sensors
Q31
Accelerometer
Q51
Fingerprint (rear-mounted), accelerometer, proximity, compass
Type
Q31
Li-Ion 3000 mAh
Q51
Li-Po 4000 mAh
Colors
Q31
Silver
Q51
Frozen White, Moonlight Titanium
Models
Q31
LM-Q310N
Q51
LM-Q510N
Price
Q31
About 150 EUR
Q51
About 240 EUR