Screen size
A53 (2015)5.5"
K15xWinner: 6.8"+19%
Quick verdict
K15x leads the measured specs 13-3.
Measured wins
A53 (2015)
3
spec wins
Ties
6
equal specs
K15x
13
spec wins
Overall winner
Screen size
Technology
A53 (2015)
GSM / HSPA / LTE
K15x
GSM / HSPA / LTE / 5G
2G bands
A53 (2015)
GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
K15x
GSM 850 / 900 / 1800 / 1900
3G bands
A53 (2015)
HSDPA 850 / 900 / 1900 / 2100 , TD-SCDMA
K15x
HSDPA 850 / 900 / 2100
4G bands
A53 (2015)
1, 3, 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
K15x
1, 3, 5, 8, 28, 34, 38, 39, 40, 41
Speed
A53 (2015)
HSPA, LTE
K15x
HSPA, LTE, 5G
5G bands
A53 (2015)
-
K15x
1, 3, 5, 8, 28, 41, 48, 77, 78 SA/NSA
Announced
A53 (2015)
2015, November. Released 2015, December
K15x
2026, October 02
Status
A53 (2015)
Discontinued
K15x
Available. Released 2026, October 02
Dimensions
A53 (2015)
153 x 77 x 7.4 mm (6.02 x 3.03 x 0.29 in)
K15x
166.6 x 78.5 x 8.6 mm (6.56 x 3.09 x 0.34 in)
Weight
A53 (2015)
165 g (5.82 oz)
K15x
212 g (7.48 oz)
SIM
A53 (2015)
Nano-SIM + Micro-SIM
K15x
Nano-SIM + Nano-SIM
Build
A53 (2015)
-
K15x
Glass front, plastic frame, plastic back
Other
A53 (2015)
-
K15x
IP64 dust tight and water resistant (water splashes)
Type
A53 (2015)
IPS LCD
K15x
IPS LCD, 120Hz, 1125 nits (peak)
Size
A53 (2015)
5.5 inches, 83.4 cm2 (~70.8% screen-to-body ratio)
K15x
6.75 inches, 111.4 cm2 (~85.2% screen-to-body ratio)
Resolution
A53 (2015)
720 x 1280 pixels, 16:9 ratio (~267 ppi density)
K15x
720 x 1570 pixels, 19.5:9 ratio (~256 ppi density)
OS
A53 (2015)
Android 5.1 (Lollipop), ColorOS 2.1
K15x
Android 16, ColorOS 16
Chipset
A53 (2015)
Qualcomm MSM8939v2 Snapdragon 616 (28 nm)
K15x
Mediatek Dimensity 6300 (6 nm)
CPU
A53 (2015)
Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
K15x
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU
A53 (2015)
Adreno 405
K15x
Mali-G57 MC2
Card slot
A53 (2015)
microSDXC (uses shared SIM slot)
K15x
microSDXC
Internal
A53 (2015)
16GB 2GB RAM
K15x
128GB 6GB RAM, 256GB 6GB RAM
Other
A53 (2015)
eMMC 4.5
K15x
UFS 2.2
Single
A53 (2015)
13 MP, AF
K15x
-
Features
A53 (2015)
LED flash, HDR, panorama
K15x
LED flash, HDR, panorama
Video
A53 (2015)
1080p@30fps
K15x
1080p@30/60fps
Dual
A53 (2015)
-
K15x
13 MP, f/2.2, 27mm (wide), AF Auxiliary lens
Single
A53 (2015)
5 MP
K15x
5 MP, f/2.2, 27mm (wide)
Video
A53 (2015)
K15x
1080p@30fps
Features
A53 (2015)
-
K15x
Panorama
Loudspeaker
A53 (2015)
Yes
K15x
Yes
3.5mm jack
A53 (2015)
Yes
K15x
Yes
WLAN
A53 (2015)
Wi-Fi 802.11 b/g/n
K15x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
A53 (2015)
4.0, A2DP
K15x
5.4, A2DP, LE, aptX HD
Positioning
A53 (2015)
GPS
K15x
GPS, GALILEO, GLONASS, QZSS
NFC
A53 (2015)
Yes
K15x
Yes
Radio
A53 (2015)
FM radio
K15x
No
USB
A53 (2015)
microUSB 2.0, OTG
K15x
USB Type-C 2.0, OTG
Sensors
A53 (2015)
Accelerometer, proximity, compass
K15x
Fingerprint (side-mounted), accelerometer, proximity, compass
Type
A53 (2015)
Li-Ion 3075 mAh, non-removable
K15x
6500 mAh
Charging
A53 (2015)
-
K15x
45W wired 5W reverse wired
Colors
A53 (2015)
White/Gold
K15x
Purple, White
Price
A53 (2015)
About 200 EUR
K15x
About 230 EUR
Models
A53 (2015)
-
K15x
PLT150