Screen size
K15xWinner: 6.8"+26%
R1x5.0"
Quick verdict
K15x leads the measured specs 14-3.
Measured wins
K15x
14
spec wins
Overall winner
Ties
5
equal specs
R1x
3
spec wins
Screen size
Technology
K15x
GSM / HSPA / LTE / 5G
R1x
GSM / HSPA / LTE
2G bands
K15x
GSM 850 / 900 / 1800 / 1900
R1x
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
K15x
HSDPA 850 / 900 / 2100
R1x
HSDPA 850 / 900 / 1700 / 1900 / 2100
4G bands
K15x
1, 3, 5, 8, 28, 34, 38, 39, 40, 41
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
equal specsFront camera
equal specsBattery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
NFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
R1x
1, 3, 7
5G bands
K15x
1, 3, 5, 8, 28, 41, 48, 77, 78 SA/NSA
R1x
-
Speed
K15x
HSPA, LTE, 5G
R1x
HSPA, LTE
Announced
K15x
2026, October 02
R1x
2015, January. Released 2015, January
Status
K15x
Available. Released 2026, October 02
R1x
Discontinued
Dimensions
K15x
166.6 x 78.5 x 8.6 mm (6.56 x 3.09 x 0.34 in)
R1x
140.6 x 70.1 x 6.8 mm (5.54 x 2.76 x 0.27 in)
Weight
K15x
212 g (7.48 oz)
R1x
130 g (4.59 oz)
Build
K15x
Glass front, plastic frame, plastic back
R1x
-
SIM
K15x
Nano-SIM + Nano-SIM
R1x
Nano-SIM + Micro-SIM
Other
K15x
IP64 dust tight and water resistant (water splashes)
R1x
-
Type
K15x
IPS LCD, 120Hz, 1125 nits (peak)
R1x
IPS LCD
Size
K15x
6.75 inches, 111.4 cm2 (~85.2% screen-to-body ratio)
R1x
5.0 inches, 68.9 cm2 (~69.9% screen-to-body ratio)
Resolution
K15x
720 x 1570 pixels, 19.5:9 ratio (~256 ppi density)
R1x
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
OS
K15x
Android 16, ColorOS 16
R1x
Android 4.4 (KitKat), ColorOS 2
Chipset
K15x
Mediatek Dimensity 6300 (6 nm)
R1x
Qualcomm MSM8939 Snapdragon 615 (28 nm)
CPU
K15x
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
K15x
Mali-G57 MC2
R1x
Adreno 405
Card slot
K15x
microSDXC
R1x
microSDXC (uses shared SIM slot)
Internal
K15x
128GB 6GB RAM, 256GB 6GB RAM
R1x
16GB 2GB RAM
Other
K15x
UFS 2.2
R1x
eMMC 4.5
Dual
K15x
13 MP, f/2.2, 27mm (wide), AF Auxiliary lens
R1x
-
Features
K15x
LED flash, HDR, panorama
R1x
LED flash, HDR, panorama
Video
K15x
1080p@30/60fps
R1x
1080p@30fps
Single
K15x
-
R1x
13 MP, AF
Single
K15x
5 MP, f/2.2, 27mm (wide)
R1x
5 MP
Features
K15x
Panorama
R1x
-
Video
K15x
1080p@30fps
R1x
Loudspeaker
K15x
Yes
R1x
Yes
3.5mm jack
K15x
Yes
R1x
Yes
WLAN
K15x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
R1x
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
Bluetooth
K15x
5.4, A2DP, LE, aptX HD
R1x
4.0, A2DP, EDR
Positioning
K15x
GPS, GALILEO, GLONASS, QZSS
R1x
GPS, GLONASS
NFC
K15x
Yes
R1x
No
Radio
K15x
No
R1x
FM radio
USB
K15x
USB Type-C 2.0, OTG
R1x
microUSB 2.0, OTG
Sensors
K15x
Fingerprint (side-mounted), accelerometer, proximity, compass
R1x
Accelerometer, proximity, compass
Type
K15x
6500 mAh
R1x
Li-Po 2420 mAh, non-removable
Charging
K15x
45W wired 5W reverse wired
R1x
-
Stand-by
K15x
-
R1x
Up to 250 h
Talk time
K15x
-
R1x
Up to 8 h
Colors
K15x
Purple, White
R1x
Dark blue, White
Models
K15x
PLT150
R1x
R8206, R8200
Price
K15x
About 230 EUR
R1x
About 340 EUR