Screen size
K51SWinner: 6.6"+0.8%
Q516.5"
Quick verdict
K51S leads the measured specs 8-1.
Measured wins
K51S
8
spec wins
Overall winner
Ties
9
equal specs
Q51
1
spec wins
Screen size
Technology
K51S
GSM / HSPA / LTE
Q51
GSM / HSPA / LTE
2G bands
K51S
GSM 850 / 900 / 1800 / 1900
Q51
GSM 850 / 900 / 1800 / 1900
3G bands
K51S
HSDPA 850 / 900 / 1900 / 2100
Q51
HSDPA 850 / 900 / 1900 / 2100
4G bands
K51S
1, 3, 7, 8, 20, 28, 38
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
equal specsStorage
Main camera
Front camera
equal specsBattery
equal specsWired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Q51
1, 3, 7, 8, 20
Speed
K51S
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Q51
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/75 Mbps
Announced
K51S
2020, February 18. Released 2020, April 27
Q51
2020, February 25. Released 2020, February 26
Status
K51S
Discontinued
Q51
Discontinued
Dimensions
K51S
165.2 x 76.7 x 8.3 mm (6.50 x 3.02 x 0.33 in)
Q51
164.5 x 77.5 x 8.4 mm (6.48 x 3.05 x 0.33 in)
Weight
K51S
194.5 g (6.88 oz)
Q51
-
SIM
K51S
· Nano-SIM· Nano-SIM + Nano-SIM
Q51
Nano-SIM + Nano-SIM
Other
K51S
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
K51S
IPS LCD
Q51
IPS LCD
Size
K51S
6.55 inches, 93.6 cm2 (~73.8% screen-to-body ratio)
Q51
6.5 inches, 105.5 cm2 (~82.7% screen-to-body ratio)
Resolution
K51S
720 x 1600 pixels, 20:9 ratio (~282 ppi density)
Q51
720 x 1520 pixels, 19:9 ratio (~259 ppi density)
Protection
K51S
Scratch-resistant glass
Q51
-
OS
K51S
Android 9.0 (Pie)
Q51
Android 10
Chipset
K51S
Mediatek MT6765 Helio P35 (12 nm)
Q51
Mediatek MT6762 Helio P22 (12 nm)
CPU
K51S
Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
Q51
Octa-core 2.0 GHz Cortex-A53
GPU
K51S
PowerVR GE8320
Q51
PowerVR GE8320
Card slot
K51S
microSDXC (dedicated slot)
Q51
microSDXC (dedicated slot)
Internal
K51S
64GB 3GB RAM
Q51
32GB 3GB RAM
Other
K51S
eMMC 5.1
Q51
eMMC 5.1
Quad
K51S
32 MP, (wide), PDAF 5 MP, f/2.2, 115˚, (ultrawide) 2 MP (macro) Auxiliary lens
Q51
-
Features
K51S
LED flash, panorama, HDR
Q51
LED flash, panorama, HDR
Video
K51S
1080p@30fps
Q51
1080p@30fps
Triple
K51S
-
Q51
13 MP, (wide), PDAF 5 MP, 13mm (ultrawide) Auxiliary lens
Single
K51S
13 MP, 1/3.1", 1.12µm
Q51
13 MP, (wide), 1/3.1", 1.12µm
Video
K51S
1080p@30fps
Q51
1080p@30fps
Loudspeaker
K51S
Yes
Q51
Yes, with stereo speakers
3.5mm jack
K51S
Yes
Q51
Yes
WLAN
K51S
Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct, DLNAorWi-Fi 802.11 b/g/n, Wi-Fi Direct, DLNA
Q51
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA
Bluetooth
K51S
5.0, A2DP, LE
Q51
5.0, A2DP, LE
Positioning
K51S
GPS
Q51
GPS
NFC
K51S
Yes
Q51
Yes
Radio
K51S
No
Q51
No
USB
K51S
USB Type-C 2.0, OTG
Q51
USB Type-C 2.0
Sensors
K51S
Fingerprint (rear-mounted), accelerometer, proximity, compass
Q51
Fingerprint (rear-mounted), accelerometer, proximity, compass
Type
K51S
Li-Po 4000 mAh
Q51
Li-Po 4000 mAh
Colors
K51S
Titanium, Pink, Blue, Red
Q51
Frozen White, Moonlight Titanium
Models
K51S
LMK510EMW, LM-K510EMW, LM-K510
Q51
LM-Q510N
Price
K51S
About 200 EUR
Q51
About 240 EUR