Samsung Galaxy M21s vs Realme 15
Product
Price
239 USD
239 USD
Status
Available
Available
Brand
Samsung Mobile
Realme Mobiles
Model No
Galaxy M21s
RMX5106
Launch Date
2020, November 06
2025, July 30
Website
Technology
GSM / HSPA / LTE
GSM / HSPA / LTE / 5G
2G bands
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
HSDPA 850 / 900 / 2100
4G bands
LTE
1, 3, 5, 8, 28, 40, 41
Speed
HSPA 42.2/5.76 Mbps, LTE-A
HSPA, LTE, 5G
5G bands
1, 3, 5, 8, 28, 40, 41, 77, 78 SA/NSA
Dimensions
159.2 x 75.1 x 8.9 mm (6.27 x 2.96 x 0.35 in)
162.3 x 76.2 x 7.7 / 7.8 / 8.0 mm
Weight
191 g (6.74 oz)
187 g or 189 g (6.60 oz)
Build
Glass front (Gorilla Glass 3), plastic back, plastic frame
Glass front, aluminum frame, fiberglass back or silicone polymer (eco leather) back
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 2m for 30 min)
MIL-STD-810H compliant*
* does not guarantee ruggedness or use in extreme conditions
SIM
Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
Nano-SIM + Nano-SIM
Colors
Blue, Black
Flowing Silver, Silk Pink, Velvet Green
Type
Super AMOLED, 420 nits (typ)
AMOLED, 1B colors, 144Hz, 3840Hz PWM, HDR, 1600 nits (HBM), 4500 nits (peak)
Size
6.4 inches, 100.5 cm2 (~84.1% screen-to-body ratio)
6.77 inches, 110.9 cm2 (~89.5% screen-to-body ratio)
Resolution
1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
1080 x 2392 pixels (~388 ppi density)
OS
Android 10, One UI 2.5
Android 15, Realme UI 6.0
Chipset
Exynos 9611 (10nm)
Mediatek Dimensity 7300+ (4 nm)
CPU
Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
Octa-core (4x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
GPU
Mali-G72 MP3
Mali-G615 MC2
RAM
4GB/6GB
12GB
Storage
64GB/128GB
256GB
UFS 3.1
Card Slot
microSDXC
Lens 1
64 MP, (wide), PDAF
50 MP, f/1.8, 24mm (wide), 1/1.56", PDAF, OIS
Lens 2
8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12µm
8 MP, f/2.2, 112˚, 16mm (ultrawide)
Lens 3
5 MP, f/2.2, (depth)
Features
LED flash, panorama, HDR
LED flash, HDR, panorama
Video
4K@30fps, 1080p@30fps, gyro-EIS
4K@30fps, 1080p@30fps, gyro-EIS, OIS
Lens 1
32 MP
50 MP, f/2.4, 23mm (wide)
Features
HDR
Panorama
Video
1080p@30fps
4K@30fps, 1080p@30fps
Capacity
Li-Po 6000 mAh, non-removable
Li-Ion 7000 mAh
Charging
Fast charging 15W
80W wired, 50% in 25 min
Sensors
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Loudspeaker
Yes
Yes, with stereo speakers
3.5mm jack
Yes
WLAN
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band
Bluetooth
5.0, A2DP, LE
5.4, A2DP, LE
GPS
Yes, with A-GPS, GLONASS, BDS
GPS, GLONASS, GALILEO, BDS
NFC
No
Radio
FM radio, RDS, recording
USB
USB Type-C 2.0
USB Type-C 2.0