Screen size
K15sWinner: 6.6"+24%
R1x5.0"
Quick verdict
K15s leads the measured specs 17-3.
Measured wins
K15s
17
spec wins
Overall winner
Ties
2
equal specs
R1x
3
spec wins
Screen size
Technology
K15s
GSM / HSPA / LTE / 5G
R1x
GSM / HSPA / LTE
2G bands
K15s
GSM 850 / 900 / 1800 / 1900
R1x
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
K15s
HSDPA 850 / 900 / 2100
R1x
HSDPA 850 / 900 / 1700 / 1900 / 2100
4G bands
K15s
1, 3, 5, 8, 28, 34, 38, 39, 40, 41, 42, 48
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
NFC
3.5mm jack
SD card
equal specsStereo speakers
R1x
1, 3, 7
5G bands
K15s
1, 3, 5, 8, 28, 38, 40, 41, 48, 77, 78 SA/NSA
R1x
-
Speed
K15s
HSPA, LTE, 5G
R1x
HSPA, LTE
Announced
K15s
2026, October 02
R1x
2015, January. Released 2015, January
Status
K15s
Available. Released 2026, October 02
R1x
Discontinued
Dimensions
K15s
159.1 x 75.8 x 8.8 mm (6.26 x 2.98 x 0.35 in)
R1x
140.6 x 70.1 x 6.8 mm (5.54 x 2.76 x 0.27 in)
Weight
K15s
205 g (7.23 oz)
R1x
130 g (4.59 oz)
Build
K15s
Glass front, plastic frame, plastic back
R1x
-
SIM
K15s
Nano-SIM + Nano-SIM
R1x
Nano-SIM + Micro-SIM
Other
K15s
IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) Drop resistant up to 1.8m
R1x
-
Type
K15s
AMOLED, 1B colors, 120Hz, 800 nits (typ), 1400 nits (peak)
R1x
IPS LCD
Size
K15s
6.57 inches, 105.0 cm2 (~87.1% screen-to-body ratio)
R1x
5.0 inches, 68.9 cm2 (~69.9% screen-to-body ratio)
Resolution
K15s
1080 x 2372 pixels (~397 ppi density)
R1x
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
OS
K15s
Android 16, ColorOS 16
R1x
Android 4.4 (KitKat), ColorOS 2
Chipset
K15s
Mediatek Dimensity 6360 Max (6 nm)
R1x
Qualcomm MSM8939 Snapdragon 615 (28 nm)
CPU
K15s
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
R1x
Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
GPU
K15s
Mali-G57 MC2
R1x
Adreno 405
Card slot
K15s
microSDXC
R1x
microSDXC (uses shared SIM slot)
Internal
K15s
128GB 6GB RAM, 256GB 8GB RAM
R1x
16GB 2GB RAM
Other
K15s
UFS 2.2
R1x
eMMC 4.5
Dual
K15s
50 MP, f/1.9, 25mm (wide), PDAF Auxiliary lens
R1x
-
Features
K15s
LED flash, HDR, panorama
R1x
LED flash, HDR, panorama
Video
K15s
1080p@30/60fps
R1x
1080p@30fps
Single
K15s
-
R1x
13 MP, AF
Single
K15s
8 MP, f/2.1, 25mm (wide)
R1x
5 MP
Features
K15s
Panorama
R1x
-
Video
K15s
1080p@30fps
R1x
Loudspeaker
K15s
Yes
R1x
Yes
3.5mm jack
K15s
No
R1x
Yes
WLAN
K15s
Wi-Fi 802.11 a/b/g/n/ac, dual-band
R1x
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
Bluetooth
K15s
5.4, A2DP, LE, aptX HD
R1x
4.0, A2DP, EDR
Positioning
K15s
GPS, GALILEO, GLONASS, BDS, QZSS
R1x
GPS, GLONASS
NFC
K15s
Yes
R1x
No
Infrared port
K15s
Yes
R1x
-
Radio
K15s
No
R1x
FM radio
USB
K15s
USB Type-C 2.0, OTG
R1x
microUSB 2.0, OTG
Sensors
K15s
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
R1x
Accelerometer, proximity, compass
Type
K15s
Si/C Li-Ion 8000 mAh
R1x
Li-Po 2420 mAh, non-removable
Charging
K15s
45W wired, 45W UFCS, 45W PPS, 13.5W PD Reverse wired
R1x
-
Stand-by
K15s
-
R1x
Up to 250 h
Talk time
K15s
-
R1x
Up to 8 h
Colors
K15s
Gray, Purple
R1x
Dark blue, White
Models
K15s
PYE130
R1x
R8206, R8200
Price
K15s
About 270 EUR
R1x
About 340 EUR