Screen size
K15xWinner: 6.8"+13%
U35.9"
Quick verdict
K15x leads the measured specs 12-4.
Measured wins
K15x
12
spec wins
Overall winner
Ties
6
equal specs
U3
4
spec wins
Screen size
Technology
K15x
GSM / HSPA / LTE / 5G
U3
GSM / LTE
2G bands
K15x
GSM 850 / 900 / 1800 / 1900
U3
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
K15x
HSDPA 850 / 900 / 2100
U3
TD-SCDMA
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
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
U3
38, 39, 40, 41
5G bands
K15x
1, 3, 5, 8, 28, 41, 48, 77, 78 SA/NSA
U3
-
Speed
K15x
HSPA, LTE, 5G
U3
HSPA, LTE
GPRS
K15x
-
U3
Yes
EDGE
K15x
-
U3
Yes
Announced
K15x
2026, October 02
U3
2015, January. Released 2015, April
Status
K15x
Available. Released 2026, October 02
U3
Discontinued
Dimensions
K15x
166.6 x 78.5 x 8.6 mm (6.56 x 3.09 x 0.34 in)
U3
156.8 x 81 x 8 mm (6.17 x 3.19 x 0.31 in)
Weight
K15x
212 g (7.48 oz)
U3
195 g (6.88 oz)
Build
K15x
Glass front, plastic frame, plastic back
U3
-
SIM
K15x
Nano-SIM + Nano-SIM
U3
Nano-SIM + Micro-SIM
Other
K15x
IP64 dust tight and water resistant (water splashes)
U3
-
Type
K15x
IPS LCD, 120Hz, 1125 nits (peak)
U3
IPS LCD
Size
K15x
6.75 inches, 111.4 cm2 (~85.2% screen-to-body ratio)
U3
5.9 inches, 93.9 cm2 (~74.0% screen-to-body ratio)
Resolution
K15x
720 x 1570 pixels, 19.5:9 ratio (~256 ppi density)
U3
1080 x 1920 pixels, 16:9 ratio (~377 ppi density)
OS
K15x
Android 16, ColorOS 16
U3
Android 4.4.4 (KitKat), ColorOS 2
Chipset
K15x
Mediatek Dimensity 6300 (6 nm)
U3
Mediatek MT6752 (28 nm)
CPU
K15x
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
U3
Octa-core 1.7 GHz Cortex-A53
GPU
K15x
Mali-G57 MC2
U3
Mali-T760MP2
Card slot
K15x
microSDXC
U3
microSDHC (dedicated slot)
Internal
K15x
128GB 6GB RAM, 256GB 6GB RAM
U3
16GB 2GB RAM
Other
K15x
UFS 2.2
U3
-
Dual
K15x
13 MP, f/2.2, 27mm (wide), AF Auxiliary lens
U3
-
Features
K15x
LED flash, HDR, panorama
U3
LED flash, HDR, panorama
Video
K15x
1080p@30/60fps
U3
1080p@30fps
Single
K15x
-
U3
13 MP, AF
Single
K15x
5 MP, f/2.2, 27mm (wide)
U3
5 MP
Features
K15x
Panorama
U3
LED flash
Video
K15x
1080p@30fps
U3
1080p@30fps
Loudspeaker
K15x
Yes
U3
Yes
3.5mm jack
K15x
Yes
U3
Yes
WLAN
K15x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
U3
Wi-Fi 802.11 a/b/g/n, dual-band, hotspot
Bluetooth
K15x
5.4, A2DP, LE, aptX HD
U3
4.0, A2DP
Positioning
K15x
GPS, GALILEO, GLONASS, QZSS
U3
GPS
NFC
K15x
Yes
U3
Yes
Radio
K15x
No
U3
No
USB
K15x
USB Type-C 2.0, OTG
U3
microUSB 2.0
Sensors
K15x
Fingerprint (side-mounted), accelerometer, proximity, compass
U3
Accelerometer, proximity, compass
Type
K15x
6500 mAh
U3
Li-Ion 3000 mAh, non-removable
Charging
K15x
45W wired 5W reverse wired
U3
20W wired, 75% in 30 min
Stand-by
K15x
-
U3
Up to 400 h (3G)
Talk time
K15x
-
U3
Up to 10 h (3G)
Colors
K15x
Purple, White
U3
White, Black
Models
K15x
PLT150
U3
-
Price
K15x
About 230 EUR
U3
-