Screen size
A53s6.5"
K15xWinner: 6.8"+3.7%
Quick verdict
K15x leads the measured specs 11-6.
Measured wins
A53s
6
spec wins
Ties
6
equal specs
K15x
11
spec wins
Overall winner
Screen size
Technology
A53s
GSM / HSPA / LTE
K15x
GSM / HSPA / LTE / 5G
2G bands
A53s
GSM 850 / 900 / 1800 / 1900
K15x
GSM 850 / 900 / 1800 / 1900
3G bands
A53s
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 - Version 1, Version 3, HSDPA 850 / 900 / 2100 - Version 2
K15x
HSDPA 850 / 900 / 2100
4G bands
A53s
1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 20, 26, 28, 38, 39, 40, 41, 66 - Version 1, 1, 3, 5, 8, 38, 40, 41 - Version 2, 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 38, 39, 40, 41 - Version 3
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
equal specsUSB
equal specs5G support
NFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
K15x
1, 3, 5, 8, 28, 34, 38, 39, 40, 41
Speed
A53s
HSPA, LTE
K15x
HSPA, LTE, 5G
5G bands
A53s
-
K15x
1, 3, 5, 8, 28, 41, 48, 77, 78 SA/NSA
Announced
A53s
2020, October 12. Released 2020, October 17
K15x
2026, October 02
Status
A53s
Discontinued
K15x
Available. Released 2026, October 02
Dimensions
A53s
163.9 x 75.1 x 8.4 mm (6.45 x 2.96 x 0.33 in)
K15x
166.6 x 78.5 x 8.6 mm (6.56 x 3.09 x 0.34 in)
Weight
A53s
186 g (6.56 oz)
K15x
212 g (7.48 oz)
SIM
A53s
Nano-SIM + Nano-SIM
K15x
Nano-SIM + Nano-SIM
Build
A53s
-
K15x
Glass front, plastic frame, plastic back
Other
A53s
-
K15x
IP64 dust tight and water resistant (water splashes)
Type
A53s
IPS LCD, 90Hz, 480 nits (typ)
K15x
IPS LCD, 120Hz, 1125 nits (peak)
Size
A53s
6.5 inches, 102.0 cm2 (~82.9% screen-to-body ratio)
K15x
6.75 inches, 111.4 cm2 (~85.2% screen-to-body ratio)
Resolution
A53s
720 x 1600 pixels, 20:9 ratio (~270 ppi density)
K15x
720 x 1570 pixels, 19.5:9 ratio (~256 ppi density)
Protection
A53s
Corning Gorilla Glass 3
K15x
-
OS
A53s
Android 10, ColorOS 7.2
K15x
Android 16, ColorOS 16
Chipset
A53s
Qualcomm SM4250 Snapdragon 460 (11 nm)
K15x
Mediatek Dimensity 6300 (6 nm)
CPU
A53s
Octa-core (4x1.8 GHz Kryo 240 & 4x1.6 GHz Kryo 240)
K15x
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU
A53s
Adreno 610
K15x
Mali-G57 MC2
Card slot
A53s
microSDXC (dedicated slot)
K15x
microSDXC
Internal
A53s
64GB 4GB RAM, 128GB 4GB RAM
K15x
128GB 6GB RAM, 256GB 6GB RAM
Other
A53s
UFS 2.1 (single lane)
K15x
UFS 2.2
Triple
A53s
13 MP, f/2.2, 25mm (wide), 1/3.06", 1.12µm, PDAF 2 MP (macro) Auxiliary lens
K15x
-
Features
A53s
LED flash, HDR, panorama
K15x
LED flash, HDR, panorama
Video
A53s
1080p@30fps
K15x
1080p@30/60fps
Dual
A53s
-
K15x
13 MP, f/2.2, 27mm (wide), AF Auxiliary lens
Single
A53s
8 MP, f/2.0, (wide)
K15x
5 MP, f/2.2, 27mm (wide)
Features
A53s
HDR
K15x
Panorama
Video
A53s
1080p@30fps
K15x
1080p@30fps
Loudspeaker
A53s
Yes, with stereo speakers
K15x
Yes
3.5mm jack
A53s
Yes
K15x
Yes
WLAN
A53s
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
A53s
5.0, A2DP, LE, aptX HD
K15x
5.4, A2DP, LE, aptX HD
Positioning
A53s
GPS, GLONASS, GALILEO, BDS
K15x
GPS, GALILEO, GLONASS, QZSS
NFC
A53s
Yes (market/region dependent)
K15x
Yes
Radio
A53s
FM radio
K15x
No
USB
A53s
USB Type-C 2.0, OTG
K15x
USB Type-C 2.0, OTG
Sensors
A53s
Fingerprint (rear-mounted), accelerometer, proximity, compass
K15x
Fingerprint (side-mounted), accelerometer, proximity, compass
Type
A53s
Li-Po 5000 mAh
K15x
6500 mAh
Charging
A53s
18W wired
K15x
45W wired 5W reverse wired
Colors
A53s
Electric Black, Fancy Blue
K15x
Purple, White
Models
A53s
CPH2139, CPH2135
K15x
PLT150
SAR
A53s
0.77 W/kg (head) 0.97 W/kg (body)
K15x
-
Price
A53s
About 110 EUR
K15x
About 230 EUR