Compare Phones
Select up to 4 phones to compare side by side
galaxy-s21
k15x
Display
Type
IPS_LCD
AMOLED
Size
6.75"
6.2"
Resolution
HD+
FHD+
Refresh Rate
120Hz
120Hz
Brightness
1125 nits
1300 nits
Protection
—
Corning Gorilla Glass Victus
Platform
OS
ANDROID Android 16, ColorOS 16
ANDROID Android 11, up to 4 major Android upgrades, One UI 6.1
Chipset
Mediatek Dimensity 6300
Exynos 2100 - International
Qualcomm SM8350 Snapdragon 888 5G
CPU
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International
Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55
GPU
Mali-G57 MC2
Mali-G78 MP14 - International
Adreno 660
AnTuTu Score
—
—
Memory
RAM
6GB
8GB
Storage
128GB / 256GB
128GB / 256GB
Storage Type
UFS 2.2
UFS 3.
Card Slot
Yes
No
Camera
Main Camera
13MP f/2.2
12MP f/1.8
Selfie Camera
5MP f/2.2
10MP f/2.2
Video (Max)
1080p@30/60fps
8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS
OIS
No
Yes
Battery
Capacity
6,500 mAh
4,000 mAh
Wired Charging
45W
25W
Wireless Charging
—
15W
Fast Charging
—
PD3.0
Connectivity
Wi-Fi
Wi-Fi 5, Wi-Fi 4, Dual-band
Wi-Fi 6, Wi-Fi 5, Wi-Fi 4, Dual-band
Bluetooth
5.4
5.0
NFC
Yes
Yes
5G
Yes
No
USB
USB Type-C 2.0
USB Type-C 3.2
GPS
GPS, GLONASS, Galileo, QZSS
GPS, GLONASS, BeiDou, Galileo
Body
Dimensions
166.6 x 78.5 x 8.6 mm (6.56 x 3.09 x 0.34 in)
151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in)
Weight
212g
169g
Build
Glass / plastic back / plastic frame
Glass (Gorilla Glass Victus) / plastic back / aluminum frame
Water Resist
IP64
IP68
Colors
Purple, White
Phantom Gray, Phantom White, Phantom Violet, Phantom Pink