Product
Samsung Galaxy M02s
Samsung Galaxy M02s
Samsung Galaxy M21 2021
Samsung Galaxy M21 2021
Battery
Charging 15W wired 15W wired
Type Li-Po 5000 mAh Li-Po 6000 mAh
Body
Build Glass front, plastic back, plastic frame Glass front, plastic back, plastic frame
Dimensions 164.2 x 75.9 x 9.1 mm (6.46 x 2.99 x 0.36 in) 159 x 75.1 x 9 mm (6.26 x 2.96 x 0.35 in)
SIM Nano-SIMNano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 196 g (6.91 oz) 192 g (6.77 oz)
Comms
Bluetooth Yes 5.0, A2DP, LE
NFC No Yes (market/region dependent)
Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS, GALILEO, BDS
Radio FM radio FM radio, RDS, recording
USB Yes USB Type-C 2.0
WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Display
Resolution 720 x 1600 pixels, 20:9 ratio (~270 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
Size 6.5 inches, 102.0 cm2 (~81.8% screen-to-body ratio) 6.4 inches, 100.5 cm2 (~84.2% screen-to-body ratio)
Type PLS LCD Super AMOLED, 420 nits (peak)
Features
Sensors Accelerometer, proximity Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Launch
Announced 2021, January 07 2021, July 21
Status Available. Released 2021, January 19 Available. Released 2021, July 26
Main Camera
Features LED flash LED flash, panorama, HDR
Triple 13 MP, f/2.2, (wide), AF2 MP, f/2.4, (macro)2 MP, f/2.4, (depth) 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 123˚ (ultrawide), 1/4.0", 1.12µm 5 MP, f/2.2, (depth)
Video 1080p@30fps 4K@30fps, 1080p@30fps, 720p@240fps, gyro-EIS
Memory
Card slot microSDXC (dedicated slot) microSDXC (dedicated slot)
Internal 32GB 3GB RAM, 64GB 4GB RAM 64GB 4GB RAM, 128GB 6GB RAM
  eMMC 5.1 -
Misc
Colors Black, Blue, Red Charcoal Black, Arctic Blue
Models SM-M025F/DS, SM-M025F SM-M215G, SM-M215G/DS
SAR 0.52 W/kg (head)     0.47 W/kg (head)    
SAR EU 0.40 W/kg (head)     1.37 W/kg (body)     -
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 3, 5, 7, 8, 20, 28, 38, 40, 41 1, 3, 5, 7, 8, 20, 38, 40, 41
Speed HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps HSPA, LTE
Technology GSM / HSPA / LTE GSM / HSPA / LTE
Platform
Chipset Qualcomm SDM450 Snapdragon 450 (14 nm) Exynos 9611 (10 nm)
CPU Octa-core 1.8 GHz Cortex-A53 Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
GPU Adreno 506 Mali-G72 MP3
OS Android 10 Android 11, One UI 3.1 Core
Selfie camera
Features - HDR
Single 5 MP, f/2.2 20 MP, f/2.2, 26mm (wide)
Video 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes