Screen size
K15xWinner: 6.8"+7%
R15 Pro6.3"
Quick verdict
K15x leads the measured specs 8-7.
Measured wins
K15x
8
spec wins
Overall winner
Ties
7
equal specs
R15 Pro
7
spec wins
Screen size
Technology
K15x
GSM / HSPA / LTE / 5G
R15 Pro
GSM / CDMA / HSPA / LTE
2G bands
K15x
GSM 850 / 900 / 1800 / 1900
R15 Pro
GSM 850 / 900 / 1800 / 1900 , CDMA 800 & TD-SCDMA
3G bands
K15x
HSDPA 850 / 900 / 2100
R15 Pro
HSDPA 850 / 900 / 1700(AWS) / 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
equal specsStorage
equal specsMain camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
NFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
R15 Pro
1, 2, 3, 4, 5, 7, 8, 12, 17, 34, 38, 39, 40, 41
5G bands
K15x
1, 3, 5, 8, 28, 41, 48, 77, 78 SA/NSA
R15 Pro
-
Speed
K15x
HSPA, LTE, 5G
R15 Pro
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Announced
K15x
2026, October 02
R15 Pro
2018, March. Released 2018, April
Status
K15x
Available. Released 2026, October 02
R15 Pro
Discontinued
Dimensions
K15x
166.6 x 78.5 x 8.6 mm (6.56 x 3.09 x 0.34 in)
R15 Pro
156.5 x 75.2 x 8 mm (6.16 x 2.96 x 0.31 in)
Weight
K15x
212 g (7.48 oz)
R15 Pro
180 g (6.35 oz)
Build
K15x
Glass front, plastic frame, plastic back
R15 Pro
Glass front (Gorilla Glass 5), ceramic back, aluminum frame
SIM
K15x
Nano-SIM + Nano-SIM
R15 Pro
Nano-SIM + Nano-SIM
Other
K15x
IP64 dust tight and water resistant (water splashes)
R15 Pro
IP67 dust/water resistant (up to 1m for 30 min)
Type
K15x
IPS LCD, 120Hz, 1125 nits (peak)
R15 Pro
AMOLED
Size
K15x
6.75 inches, 111.4 cm2 (~85.2% screen-to-body ratio)
R15 Pro
6.28 inches, 98.9 cm2 (~84.1% screen-to-body ratio)
Resolution
K15x
720 x 1570 pixels, 19.5:9 ratio (~256 ppi density)
R15 Pro
1080 x 2280 pixels, 19:9 ratio (~401 ppi density)
Protection
K15x
-
R15 Pro
Corning Gorilla Glass 5
OS
K15x
Android 16, ColorOS 16
R15 Pro
Android 8.1 (Oreo), ColorOS 5
Chipset
K15x
Mediatek Dimensity 6300 (6 nm)
R15 Pro
Qualcomm SDM660 Snapdragon 660 (14 nm)
CPU
K15x
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
R15 Pro
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU
K15x
Mali-G57 MC2
R15 Pro
Adreno 512
Card slot
K15x
microSDXC
R15 Pro
microSDXC (uses shared SIM slot)
Internal
K15x
128GB 6GB RAM, 256GB 6GB RAM
R15 Pro
128GB 6GB RAM
Other
K15x
UFS 2.2
R15 Pro
eMMC 5.1
Dual
K15x
13 MP, f/2.2, 27mm (wide), AF Auxiliary lens
R15 Pro
16 MP, f/1.7, 25mm (wide), 1/2.6", 1.22µm, PDAF 20 MP, f/1.7, 25mm (wide), 1/2.8", 1.0µm
Features
K15x
LED flash, HDR, panorama
R15 Pro
LED flash, HDR, panorama
Video
K15x
1080p@30/60fps
R15 Pro
4K@30fps, 1080p@60/120fps, 720p@240fps
Single
K15x
5 MP, f/2.2, 27mm (wide)
R15 Pro
20 MP, f/2.0, 20mm (wide), 1/2.8", 1.0µm
Features
K15x
Panorama
R15 Pro
-
Video
K15x
1080p@30fps
R15 Pro
1080p@30fps
Loudspeaker
K15x
Yes
R15 Pro
Yes
3.5mm jack
K15x
Yes
R15 Pro
Yes
WLAN
K15x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
R15 Pro
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
K15x
5.4, A2DP, LE, aptX HD
R15 Pro
5.0, A2DP, LE, EDR
Positioning
K15x
GPS, GALILEO, GLONASS, QZSS
R15 Pro
GPS, GLONASS
NFC
K15x
Yes
R15 Pro
Yes
Radio
K15x
No
R15 Pro
No
USB
K15x
USB Type-C 2.0, OTG
R15 Pro
microUSB 2.0, OTG
Sensors
K15x
Fingerprint (side-mounted), accelerometer, proximity, compass
R15 Pro
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Type
K15x
6500 mAh
R15 Pro
Li-Po 3430 mAh, non-removable
Charging
K15x
45W wired 5W reverse wired
R15 Pro
20W wired
Colors
K15x
Purple, White
R15 Pro
Ceramic Black, Dream Mirror Red
Models
K15x
PLT150
R15 Pro
CPH1831, PAAM00
Price
K15x
About 230 EUR
R15 Pro
About 510 EUR