Screen size
A57 4G6.6"
K15xWinner: 6.8"+2.8%
Quick verdict
K15x leads the measured specs 12-6.
Measured wins
A57 4G
6
spec wins
Ties
4
equal specs
K15x
12
spec wins
Overall winner
Screen size
Technology
A57 4G
GSM / HSPA / LTE
K15x
GSM / HSPA / LTE / 5G
2G bands
A57 4G
GSM 850 / 900 / 1800 / 1900
K15x
GSM 850 / 900 / 1800 / 1900
3G bands
A57 4G
HSDPA 850 / 900 / 2100
K15x
HSDPA 850 / 900 / 2100
4G bands
A57 4G
1, 3, 5, 7, 8, 20, 28, 38, 40, 41
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
equal specsFront camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
NFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
K15x
1, 3, 5, 8, 28, 34, 38, 39, 40, 41
Speed
A57 4G
HSPA, LTE
K15x
HSPA, LTE, 5G
5G bands
A57 4G
-
K15x
1, 3, 5, 8, 28, 41, 48, 77, 78 SA/NSA
Announced
A57 4G
2022, May 27
K15x
2026, October 02
Status
A57 4G
Available. Released 2022, June 06
K15x
Available. Released 2026, October 02
Dimensions
A57 4G
163.7 x 75 x 8 mm (6.44 x 2.95 x 0.31 in)
K15x
166.6 x 78.5 x 8.6 mm (6.56 x 3.09 x 0.34 in)
Weight
A57 4G
187 g (6.60 oz)
K15x
212 g (7.48 oz)
Build
A57 4G
Glass front, plastic frame, plastic back
K15x
Glass front, plastic frame, plastic back
SIM
A57 4G
Nano-SIM + Nano-SIM
K15x
Nano-SIM + Nano-SIM
Other
A57 4G
IP5X (dust), IPX4 (water) resistance
K15x
IP64 dust tight and water resistant (water splashes)
Type
A57 4G
IPS LCD
K15x
IPS LCD, 120Hz, 1125 nits (peak)
Size
A57 4G
6.56 inches, 103.4 cm2 (~84.2% screen-to-body ratio)
K15x
6.75 inches, 111.4 cm2 (~85.2% screen-to-body ratio)
Resolution
A57 4G
720 x 1612 pixels, 20:9 ratio (~269 ppi density)
K15x
720 x 1570 pixels, 19.5:9 ratio (~256 ppi density)
OS
A57 4G
Android 12, upgradable to Android 14, ColorOS 14
K15x
Android 16, ColorOS 16
Chipset
A57 4G
Mediatek MT6765G Helio G35 (12 nm)
K15x
Mediatek Dimensity 6300 (6 nm)
CPU
A57 4G
Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
K15x
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU
A57 4G
PowerVR GE8320
K15x
Mali-G57 MC2
Card slot
A57 4G
microSDXC
K15x
microSDXC
Internal
A57 4G
64GB 3GB RAM, 64GB 4GB RAM, 128GB 4GB RAM
K15x
128GB 6GB RAM, 256GB 6GB RAM
Other
A57 4G
eMMC 5.1
K15x
UFS 2.2
Dual
A57 4G
13 MP, f/2.2, 26mm (wide), 1/3.06", 1.12µm, AF Auxiliary lens
K15x
13 MP, f/2.2, 27mm (wide), AF Auxiliary lens
Features
A57 4G
LED flash, HDR, panorama
K15x
LED flash, HDR, panorama
Video
A57 4G
1080p@30fps
K15x
1080p@30/60fps
Single
A57 4G
8 MP, f/2.0, (wide)
K15x
5 MP, f/2.2, 27mm (wide)
Features
A57 4G
HDR
K15x
Panorama
Video
A57 4G
1080p@30fps
K15x
1080p@30fps
Loudspeaker
A57 4G
Yes
K15x
Yes
3.5mm jack
A57 4G
Yes
K15x
Yes
WLAN
A57 4G
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
K15x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
A57 4G
5.3, A2DP, LE, aptX HD
K15x
5.4, A2DP, LE, aptX HD
Positioning
A57 4G
GPS
K15x
GPS, GALILEO, GLONASS, QZSS
NFC
A57 4G
No
K15x
Yes
Radio
A57 4G
Unspecified
K15x
No
USB
A57 4G
USB Type-C 2.0, OTG
K15x
USB Type-C 2.0, OTG
Sensors
A57 4G
Fingerprint (side-mounted), accelerometer, proximity
K15x
Fingerprint (side-mounted), accelerometer, proximity, compass
Type
A57 4G
Li-Po 5000 mAh
K15x
6500 mAh
Charging
A57 4G
33W wired, 50% in 30 min
K15x
45W wired 5W reverse wired
Colors
A57 4G
Glowing Black, Glowing Green
K15x
Purple, White
Models
A57 4G
CPH2387
K15x
PLT150
Price
A57 4G
About 440 EUR
K15x
About 230 EUR