Screen size
K51SWinner: 6.6"+0.5%
W31+6.5"
Quick verdict
K51S leads the measured specs 8-3.
Measured wins
K51S
8
spec wins
Overall winner
Ties
6
equal specs
W31+
3
spec wins
Screen size
Technology
K51S
GSM / HSPA / LTE
W31+
GSM / HSPA / LTE
2G bands
K51S
GSM 850 / 900 / 1800 / 1900
W31+
GSM 850 / 900 / 1800 / 1900
3G bands
K51S
HSDPA 850 / 900 / 1900 / 2100
W31+
HSDPA 850 / 900 / 2100
4G bands
K51S
1, 3, 7, 8, 20, 28, 38
Resolution
equal specsRefresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
equal specsWired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
W31+
1, 3, 5, 8, 40, 41
Speed
K51S
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
W31+
HSPA, LTE
Announced
K51S
2020, February 18. Released 2020, April 27
W31+
2020, November 06. Released 2020, December 23
Status
K51S
Discontinued
W31+
Discontinued
Dimensions
K51S
165.2 x 76.7 x 8.3 mm (6.50 x 3.02 x 0.33 in)
W31+
166.2 x 76.3 x 8.4 mm (6.54 x 3.00 x 0.33 in)
Weight
K51S
194.5 g (6.88 oz)
W31+
173.6 g (6.14 oz)
SIM
K51S
· Nano-SIM· Nano-SIM + Nano-SIM
W31+
Nano-SIM + Nano-SIM
Other
K51S
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
W31+
-
Type
K51S
IPS LCD
W31+
IPS LCD
Size
K51S
6.55 inches, 93.6 cm2 (~73.8% screen-to-body ratio)
W31+
6.52 inches, 102.6 cm2 (~80.9% screen-to-body ratio)
Resolution
K51S
720 x 1600 pixels, 20:9 ratio (~282 ppi density)
W31+
720 x 1600 pixels, 20:9 ratio (~269 ppi density)
Protection
K51S
Scratch-resistant glass
W31+
-
OS
K51S
Android 9.0 (Pie)
W31+
Android 10
Chipset
K51S
Mediatek MT6765 Helio P35 (12 nm)
W31+
Mediatek MT6762 Helio P22 (12 nm)
CPU
K51S
Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
W31+
Octa-core 2.0 GHz Cortex-A53
GPU
K51S
PowerVR GE8320
W31+
PowerVR GE8320
Card slot
K51S
microSDXC (dedicated slot)
W31+
microSDXC (dedicated slot)
Internal
K51S
64GB 3GB RAM
W31+
128GB 4GB RAM
Other
K51S
eMMC 5.1
W31+
eMMC 5.1
Quad
K51S
32 MP, (wide), PDAF 5 MP, f/2.2, 115˚, (ultrawide) 2 MP (macro) Auxiliary lens
W31+
-
Features
K51S
LED flash, panorama, HDR
W31+
LED flash, panorama, HDR
Video
K51S
1080p@30fps
W31+
1080p@30fps
Triple
K51S
-
W31+
13 MP, (wide), 1/3.0", 1.12µm, PDAF 5 MP, (ultrawide) Auxiliary lens
Single
K51S
13 MP, 1/3.1", 1.12µm
W31+
8 MP, (wide)
Video
K51S
1080p@30fps
W31+
1080p@30fps
Loudspeaker
K51S
Yes
W31+
Yes
3.5mm jack
K51S
Yes
W31+
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
W31+
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
K51S
5.0, A2DP, LE
W31+
4.2, A2DP, LE
Positioning
K51S
GPS
W31+
GPS, GLONASS
NFC
K51S
Yes
W31+
No
Radio
K51S
No
W31+
FM radio
USB
K51S
USB Type-C 2.0, OTG
W31+
microUSB 2.0, OTG
Sensors
K51S
Fingerprint (rear-mounted), accelerometer, proximity, compass
W31+
Fingerprint (rear-mounted), accelerometer, proximity
Type
K51S
Li-Po 4000 mAh
W31+
Li-Po 4000 mAh
Colors
K51S
Titanium, Pink, Blue, Red
W31+
Midnight Blue
Models
K51S
LMK510EMW, LM-K510EMW, LM-K510
W31+
LMK315IM, LM-K315, LM-K315IM
Price
K51S
About 200 EUR
W31+
About 140 EUR