Screen size
K15sWinner: 6.6"+39%
R821T FInd Muse4.0"
Quick verdict
K15s leads the measured specs 19-1.
Measured wins
K15s
19
spec wins
Overall winner
Ties
2
equal specs
R821T FInd Muse
1
spec wins
Screen size
Technology
K15s
GSM / HSPA / LTE / 5G
R821T FInd Muse
GSM / HSPA
2G bands
K15s
GSM 850 / 900 / 1800 / 1900
R821T FInd Muse
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
K15s
HSDPA 850 / 900 / 2100
R821T FInd Muse
HSDPA 2100
4G bands
K15s
1, 3, 5, 8, 28, 34, 38, 39, 40, 41, 42, 48
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
R821T FInd Muse
-
5G bands
K15s
1, 3, 5, 8, 28, 38, 40, 41, 48, 77, 78 SA/NSA
R821T FInd Muse
-
Speed
K15s
HSPA, LTE, 5G
R821T FInd Muse
HSPA
Announced
K15s
2026, October 02
R821T FInd Muse
2013. Released 2013
Status
K15s
Available. Released 2026, October 02
R821T FInd Muse
Discontinued
Dimensions
K15s
159.1 x 75.8 x 8.8 mm (6.26 x 2.98 x 0.35 in)
R821T FInd Muse
123 x 63.5 x 9.9 mm (4.84 x 2.5 x 0.39 in)
Weight
K15s
205 g (7.23 oz)
R821T FInd Muse
-
Build
K15s
Glass front, plastic frame, plastic back
R821T FInd Muse
-
SIM
K15s
Nano-SIM + Nano-SIM
R821T FInd Muse
Dual SIM (Mini-SIM, dual stand-by)
Other
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
R821T FInd Muse
-
Type
K15s
AMOLED, 1B colors, 120Hz, 800 nits (typ), 1400 nits (peak)
R821T FInd Muse
IPS LCD
Size
K15s
6.57 inches, 105.0 cm2 (~87.1% screen-to-body ratio)
R821T FInd Muse
4.0 inches, 45.5 cm2 (~58.3% screen-to-body ratio)
Resolution
K15s
1080 x 2372 pixels (~397 ppi density)
R821T FInd Muse
480 x 800 pixels, 5:3 ratio (~233 ppi density)
OS
K15s
Android 16, ColorOS 16
R821T FInd Muse
Android 4.2 (Jelly Bean)
Chipset
K15s
Mediatek Dimensity 6360 Max (6 nm)
R821T FInd Muse
Mediatek MT6572 (28 nm)
CPU
K15s
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
R821T FInd Muse
Dual-core 1.2 GHz Cortex-A7
GPU
K15s
Mali-G57 MC2
R821T FInd Muse
Mali-400
Card slot
K15s
microSDXC
R821T FInd Muse
microSDHC (dedicated slot)
Internal
K15s
128GB 6GB RAM, 256GB 8GB RAM
R821T FInd Muse
4GB 512MB RAM
Other
K15s
UFS 2.2
R821T FInd Muse
-
Dual
K15s
50 MP, f/1.9, 25mm (wide), PDAF Auxiliary lens
R821T FInd Muse
-
Features
K15s
LED flash, HDR, panorama
R821T FInd Muse
-
Video
K15s
1080p@30/60fps
R821T FInd Muse
Yes
Single
K15s
-
R821T FInd Muse
3.15 MP
Single
K15s
8 MP, f/2.1, 25mm (wide)
R821T FInd Muse
VGA
Features
K15s
Panorama
R821T FInd Muse
-
Video
K15s
1080p@30fps
R821T FInd Muse
Loudspeaker
K15s
Yes
R821T FInd Muse
Yes
3.5mm jack
K15s
No
R821T FInd Muse
Yes
WLAN
K15s
Wi-Fi 802.11 a/b/g/n/ac, dual-band
R821T FInd Muse
Wi-Fi 802.11 b/g, hotspot
Bluetooth
K15s
5.4, A2DP, LE, aptX HD
R821T FInd Muse
Yes
Positioning
K15s
GPS, GALILEO, GLONASS, BDS, QZSS
R821T FInd Muse
GPS
NFC
K15s
Yes
R821T FInd Muse
No
Infrared port
K15s
Yes
R821T FInd Muse
-
Radio
K15s
No
R821T FInd Muse
FM radio
USB
K15s
USB Type-C 2.0, OTG
R821T FInd Muse
microUSB 2.0
Sensors
K15s
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
R821T FInd Muse
Accelerometer, proximity
Type
K15s
Si/C Li-Ion 8000 mAh
R821T FInd Muse
Li-Ion 1700 mAh, removable
Charging
K15s
45W wired, 45W UFCS, 45W PPS, 13.5W PD Reverse wired
R821T FInd Muse
-
Colors
K15s
Gray, Purple
R821T FInd Muse
White
Models
K15s
PYE130
R821T FInd Muse
-
Price
K15s
About 270 EUR
R821T FInd Muse
About 290 EUR