Screen size
A57 (2016)5.2"
K15xWinner: 6.8"+23%
Quick verdict
K15x leads the measured specs 14-4.
Measured wins
A57 (2016)
4
spec wins
Ties
4
equal specs
K15x
14
spec wins
Overall winner
Screen size
Technology
A57 (2016)
GSM / HSPA / LTE
K15x
GSM / HSPA / LTE / 5G
2G bands
A57 (2016)
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
K15x
GSM 850 / 900 / 1800 / 1900
3G bands
A57 (2016)
HSDPA 850 / 900 / 1900 / 2100
K15x
HSDPA 850 / 900 / 2100
4G bands
A57 (2016)
1, 3, 5, 7, 8, 20, 28, 38, 39, 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 (2016)
HSPA, LTE
K15x
HSPA, LTE, 5G
5G bands
A57 (2016)
-
K15x
1, 3, 5, 8, 28, 41, 48, 77, 78 SA/NSA
Announced
A57 (2016)
2016, November. Released 2016, December
K15x
2026, October 02
Status
A57 (2016)
Discontinued
K15x
Available. Released 2026, October 02
Dimensions
A57 (2016)
149.1 x 72.9 x 7.7 mm (5.87 x 2.87 x 0.30 in)
K15x
166.6 x 78.5 x 8.6 mm (6.56 x 3.09 x 0.34 in)
Weight
A57 (2016)
147 g (5.19 oz)
K15x
212 g (7.48 oz)
Build
A57 (2016)
Glass front (Gorilla Glass 4), aluminum back, aluminum frame
K15x
Glass front, plastic frame, plastic back
SIM
A57 (2016)
· Nano-SIM· Nano-SIM + Nano-SIM
K15x
Nano-SIM + Nano-SIM
Other
A57 (2016)
-
K15x
IP64 dust tight and water resistant (water splashes)
Type
A57 (2016)
IPS LCD
K15x
IPS LCD, 120Hz, 1125 nits (peak)
Size
A57 (2016)
5.2 inches, 74.5 cm2 (~68.6% screen-to-body ratio)
K15x
6.75 inches, 111.4 cm2 (~85.2% screen-to-body ratio)
Resolution
A57 (2016)
720 x 1280 pixels, 16:9 ratio (~282 ppi density)
K15x
720 x 1570 pixels, 19.5:9 ratio (~256 ppi density)
Protection
A57 (2016)
Corning Gorilla Glass 4
K15x
-
OS
A57 (2016)
Android 6 (Marshmallow), ColorOS 3
K15x
Android 16, ColorOS 16
Chipset
A57 (2016)
Qualcomm MSM8940 Snapdragon 435 (28 nm)
K15x
Mediatek Dimensity 6300 (6 nm)
CPU
A57 (2016)
Octa-core 1.4 GHz Cortex-A53
K15x
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU
A57 (2016)
Adreno 505
K15x
Mali-G57 MC2
Card slot
A57 (2016)
microSDXC (dedicated slot)
K15x
microSDXC
Internal
A57 (2016)
32GB 3GB RAM
K15x
128GB 6GB RAM, 256GB 6GB RAM
Other
A57 (2016)
eMMC 5.1
K15x
UFS 2.2
Single
A57 (2016)
13 MP, f/2.2, PDAF
K15x
-
Features
A57 (2016)
LED flash, HDR, panorama
K15x
LED flash, HDR, panorama
Video
A57 (2016)
1080p@30fps
K15x
1080p@30/60fps
Dual
A57 (2016)
-
K15x
13 MP, f/2.2, 27mm (wide), AF Auxiliary lens
Single
A57 (2016)
16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm
K15x
5 MP, f/2.2, 27mm (wide)
Video
A57 (2016)
1080p@30fps
K15x
1080p@30fps
Features
A57 (2016)
-
K15x
Panorama
Loudspeaker
A57 (2016)
Yes
K15x
Yes
3.5mm jack
A57 (2016)
Yes
K15x
Yes
WLAN
A57 (2016)
Wi-Fi 802.11 b/g/n
K15x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
A57 (2016)
4.1, A2DP
K15x
5.4, A2DP, LE, aptX HD
Positioning
A57 (2016)
GPS
K15x
GPS, GALILEO, GLONASS, QZSS
NFC
A57 (2016)
No
K15x
Yes
Radio
A57 (2016)
FM radio
K15x
No
USB
A57 (2016)
microUSB 2.0, OTG
K15x
USB Type-C 2.0, OTG
Sensors
A57 (2016)
Fingerprint (front-mounted), accelerometer, proximity, compass
K15x
Fingerprint (side-mounted), accelerometer, proximity, compass
Type
A57 (2016)
Li-Ion 2900 mAh, non-removable
K15x
6500 mAh
Charging
A57 (2016)
-
K15x
45W wired 5W reverse wired
Colors
A57 (2016)
Black, Gold, Rose Gold
K15x
Purple, White
Models
A57 (2016)
CPH1701, A57
K15x
PLT150
Price
A57 (2016)
About 200 EUR
K15x
About 230 EUR