Screen size
A77 (Mediatek)5.5"
K15sWinner: 6.6"+16%
Quick verdict
K15s leads the measured specs 15-5.
Measured wins
A77 (Mediatek)
5
spec wins
Ties
2
equal specs
K15s
15
spec wins
Overall winner
Screen size
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
NFC
3.5mm jack
SD card
equal specsStereo speakers
Technology
A77 (Mediatek)
GSM / HSPA / LTE
K15s
GSM / HSPA / LTE / 5G
2G bands
A77 (Mediatek)
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
K15s
GSM 850 / 900 / 1800 / 1900
3G bands
A77 (Mediatek)
HSDPA 850 / 900 / 1900 / 2100
K15s
HSDPA 850 / 900 / 2100
4G bands
A77 (Mediatek)
LTE
K15s
1, 3, 5, 8, 28, 34, 38, 39, 40, 41, 42, 48
Speed
A77 (Mediatek)
HSPA, LTE
K15s
HSPA, LTE, 5G
5G bands
A77 (Mediatek)
-
K15s
1, 3, 5, 8, 28, 38, 40, 41, 48, 77, 78 SA/NSA
Announced
A77 (Mediatek)
2017, May. Released 2017, May
K15s
2026, October 02
Status
A77 (Mediatek)
Discontinued
K15s
Available. Released 2026, October 02
Dimensions
A77 (Mediatek)
153.3 x 75.2 x 7.3 mm (6.04 x 2.96 x 0.29 in)
K15s
159.1 x 75.8 x 8.8 mm (6.26 x 2.98 x 0.35 in)
Weight
A77 (Mediatek)
153 g (5.40 oz)
K15s
205 g (7.23 oz)
SIM
A77 (Mediatek)
Nano-SIM + Nano-SIM
K15s
Nano-SIM + Nano-SIM
Build
A77 (Mediatek)
-
K15s
Glass front, plastic frame, plastic back
Other
A77 (Mediatek)
-
K15s
IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) Drop resistant up to 1.8m
Type
A77 (Mediatek)
IPS LCD
K15s
AMOLED, 1B colors, 120Hz, 800 nits (typ), 1400 nits (peak)
Size
A77 (Mediatek)
5.5 inches, 83.4 cm2 (~72.3% screen-to-body ratio)
K15s
6.57 inches, 105.0 cm2 (~87.1% screen-to-body ratio)
Resolution
A77 (Mediatek)
1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
K15s
1080 x 2372 pixels (~397 ppi density)
OS
A77 (Mediatek)
Android 6 (Marshmallow), ColorOS 3
K15s
Android 16, ColorOS 16
Chipset
A77 (Mediatek)
Mediatek MT6750T (28 nm)
K15s
Mediatek Dimensity 6360 Max (6 nm)
CPU
A77 (Mediatek)
Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
K15s
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU
A77 (Mediatek)
Mali-T860MP2
K15s
Mali-G57 MC2
Card slot
A77 (Mediatek)
microSDXC (uses shared SIM slot)
K15s
microSDXC
Internal
A77 (Mediatek)
64GB 4GB RAM
K15s
128GB 6GB RAM, 256GB 8GB RAM
Other
A77 (Mediatek)
eMMC 5.1
K15s
UFS 2.2
Single
A77 (Mediatek)
13 MP, f/2.2, PDAF
K15s
-
Features
A77 (Mediatek)
LED flash, HDR, panorama
K15s
LED flash, HDR, panorama
Video
A77 (Mediatek)
1080p@30fps
K15s
1080p@30/60fps
Dual
A77 (Mediatek)
-
K15s
50 MP, f/1.9, 25mm (wide), PDAF Auxiliary lens
Single
A77 (Mediatek)
16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm
K15s
8 MP, f/2.1, 25mm (wide)
Video
A77 (Mediatek)
1080p@30fps
K15s
1080p@30fps
Features
A77 (Mediatek)
-
K15s
Panorama
Loudspeaker
A77 (Mediatek)
Yes
K15s
Yes
3.5mm jack
A77 (Mediatek)
Yes
K15s
No
WLAN
A77 (Mediatek)
Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct
K15s
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
A77 (Mediatek)
4.0, A2DP
K15s
5.4, A2DP, LE, aptX HD
Positioning
A77 (Mediatek)
GPS
K15s
GPS, GALILEO, GLONASS, BDS, QZSS
NFC
A77 (Mediatek)
No
K15s
Yes
Radio
A77 (Mediatek)
No
K15s
No
USB
A77 (Mediatek)
microUSB 2.0, OTG
K15s
USB Type-C 2.0, OTG
Infrared port
A77 (Mediatek)
-
K15s
Yes
Sensors
A77 (Mediatek)
Fingerprint (front-mounted), accelerometer, proximity, compass
K15s
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Type
A77 (Mediatek)
Li-Ion 3200 mAh, non-removable
K15s
Si/C Li-Ion 8000 mAh
Charging
A77 (Mediatek)
-
K15s
45W wired, 45W UFCS, 45W PPS, 13.5W PD Reverse wired
Colors
A77 (Mediatek)
Gold, Rose Gold, Black
K15s
Gray, Purple
Price
A77 (Mediatek)
About 310 EUR
K15s
About 270 EUR
Models
A77 (Mediatek)
-
K15s
PYE130