Screen size
K15xWinner: 6.8"+30%
R8194.7"
Quick verdict
K15x leads the measured specs 17-3.
Measured wins
K15x
17
spec wins
Overall winner
Ties
2
equal specs
R819
3
spec wins
Screen size
Technology
K15x
GSM / HSPA / LTE / 5G
R819
GSM / HSPA
2G bands
K15x
GSM 850 / 900 / 1800 / 1900
R819
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
K15x
HSDPA 850 / 900 / 2100
R819
HSDPA 850 / 900 / 2100 - SIM 1 & SIM 2
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
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
NFC
3.5mm jack
equal specsSD card
Stereo speakers
R819
-
5G bands
K15x
1, 3, 5, 8, 28, 41, 48, 77, 78 SA/NSA
R819
-
Speed
K15x
HSPA, LTE, 5G
R819
HSPA
Announced
K15x
2026, October 02
R819
2013, August. Released 2013, September
Status
K15x
Available. Released 2026, October 02
R819
Discontinued
Dimensions
K15x
166.6 x 78.5 x 8.6 mm (6.56 x 3.09 x 0.34 in)
R819
136.5 x 68 x 7.3 mm (5.37 x 2.68 x 0.29 in)
Weight
K15x
212 g (7.48 oz)
R819
110 g (3.88 oz)
Build
K15x
Glass front, plastic frame, plastic back
R819
-
SIM
K15x
Nano-SIM + Nano-SIM
R819
Dual SIM (Micro-SIM, dual stand-by)
Other
K15x
IP64 dust tight and water resistant (water splashes)
R819
-
Type
K15x
IPS LCD, 120Hz, 1125 nits (peak)
R819
IPS LCD
Size
K15x
6.75 inches, 111.4 cm2 (~85.2% screen-to-body ratio)
R819
4.7 inches, 60.9 cm2 (~65.6% screen-to-body ratio)
Resolution
K15x
720 x 1570 pixels, 19.5:9 ratio (~256 ppi density)
R819
720 x 1280 pixels, 16:9 ratio (~312 ppi density)
OS
K15x
Android 16, ColorOS 16
R819
Android 4.2.1 (Jelly Bean)
Chipset
K15x
Mediatek Dimensity 6300 (6 nm)
R819
Mediatek MT6589 (28 nm)
CPU
K15x
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
R819
Quad-core 1.2 GHz Cortex-A7
GPU
K15x
Mali-G57 MC2
R819
PowerVR SGX544
Card slot
K15x
microSDXC
R819
No
Internal
K15x
128GB 6GB RAM, 256GB 6GB RAM
R819
16GB 1GB RAM
Other
K15x
UFS 2.2
R819
-
Dual
K15x
13 MP, f/2.2, 27mm (wide), AF Auxiliary lens
R819
-
Features
K15x
LED flash, HDR, panorama
R819
LED flash, panorama, HDR
Video
K15x
1080p@30/60fps
R819
1080p@30fps
Single
K15x
-
R819
8 MP, AF
Single
K15x
5 MP, f/2.2, 27mm (wide)
R819
1.9 MP
Features
K15x
Panorama
R819
-
Video
K15x
1080p@30fps
R819
Loudspeaker
K15x
Yes
R819
Yes
3.5mm jack
K15x
Yes
R819
Yes
WLAN
K15x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
R819
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, DLNA, hotspot
Bluetooth
K15x
5.4, A2DP, LE, aptX HD
R819
3.0
Positioning
K15x
GPS, GALILEO, GLONASS, QZSS
R819
GPS
NFC
K15x
Yes
R819
No
Radio
K15x
No
R819
Stereo FM radio, RDS
USB
K15x
USB Type-C 2.0, OTG
R819
microUSB 2.0
Sensors
K15x
Fingerprint (side-mounted), accelerometer, proximity, compass
R819
Accelerometer, gyro, proximity
Type
K15x
6500 mAh
R819
Li-Ion 2000 mAh, non-removable
Charging
K15x
45W wired 5W reverse wired
R819
-
Colors
K15x
Purple, White
R819
White
Models
K15x
PLT150
R819
-
Price
K15x
About 230 EUR
R819
About 250 EUR