Screen size
K51SWinner: 6.6"+0.3%
K616.5"
Quick verdict
K61 leads the measured specs 6-2.
Measured wins
K51S
2
spec wins
Ties
9
equal specs
K61
6
spec wins
Overall winner
Screen size
Technology
K51S
GSM / HSPA / LTE
K61
GSM / HSPA / LTE
2G bands
K51S
GSM 850 / 900 / 1800 / 1900
K61
GSM 850 / 900 / 1800 / 1900
3G bands
K51S
HSDPA 850 / 900 / 1900 / 2100
K61
HSDPA 850 / 900 / 1900 / 2100
4G bands
K51S
1, 3, 7, 8, 20, 28, 38
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
equal specsRAM
Storage
equal specsMain camera
Front camera
Battery
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
K61
1, 3, 5, 7, 8, 20, 28, 38, 39, 40
Speed
K51S
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
K61
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Announced
K51S
2020, February 18. Released 2020, April 27
K61
2020, February 18. Released 2020, April 27
Status
K51S
Discontinued
K61
Discontinued
Dimensions
K51S
165.2 x 76.7 x 8.3 mm (6.50 x 3.02 x 0.33 in)
K61
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)
K61
191 g (6.74 oz)
SIM
K51S
· Nano-SIM· Nano-SIM + Nano-SIM
K61
· Nano-SIM· Nano-SIM + Nano-SIM
Other
K51S
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
K61
MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Type
K51S
IPS LCD
K61
IPS LCD
Size
K51S
6.55 inches, 93.6 cm2 (~73.8% screen-to-body ratio)
K61
6.53 inches, 105.2 cm2 (~82.5% screen-to-body ratio)
Resolution
K51S
720 x 1600 pixels, 20:9 ratio (~282 ppi density)
K61
1080 x 2340 pixels, 19.5:9 ratio (~394 ppi density)
Protection
K51S
Scratch-resistant glass
K61
Scratch-resistant glass
OS
K51S
Android 9.0 (Pie)
K61
Android 9.0 (Pie)
Chipset
K51S
Mediatek MT6765 Helio P35 (12 nm)
K61
Mediatek MT6765 Helio P35 (12 nm)
CPU
K51S
Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
K61
Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
GPU
K51S
PowerVR GE8320
K61
PowerVR GE8320
Card slot
K51S
microSDXC (dedicated slot)
K61
microSDXC (dedicated slot)
Internal
K51S
64GB 3GB RAM
K61
64GB 4GB RAM, 128GB 4GB RAM
Other
K51S
eMMC 5.1
K61
-
Quad
K51S
32 MP, (wide), PDAF 5 MP, f/2.2, 115˚, (ultrawide) 2 MP (macro) Auxiliary lens
K61
48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 118˚, (ultrawide) 2 MP (macro) Auxiliary lens
Features
K51S
LED flash, panorama, HDR
K61
LED flash, panorama, HDR
Video
K51S
1080p@30fps
K61
1080p@30fps
Single
K51S
13 MP, 1/3.1", 1.12µm
K61
16 MP
Video
K51S
1080p@30fps
K61
1080p@30fps
Loudspeaker
K51S
Yes
K61
Yes
3.5mm jack
K51S
Yes
K61
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
K61
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, DLNAorWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DNLA
Bluetooth
K51S
5.0, A2DP, LE
K61
5.0, A2DP, LE
Positioning
K51S
GPS
K61
GPS
NFC
K51S
Yes
K61
Yes
Radio
K51S
No
K61
No
USB
K51S
USB Type-C 2.0, OTG
K61
USB Type-C 2.0
Sensors
K51S
Fingerprint (rear-mounted), accelerometer, proximity, compass
K61
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Type
K51S
Li-Po 4000 mAh
K61
Li-Po 4000 mAh
Colors
K51S
Titanium, Pink, Blue, Red
K61
Titanium, White, Blue
Models
K51S
LMK510EMW, LM-K510EMW, LM-K510
K61
LMQ630EAW, LM-Q630EAW, LM-Q630
Price
K51S
About 200 EUR
K61
About 300 EUR