Product
Xiaomi Redmi K40 Gaming
Xiaomi Redmi K40 Gaming
₹25,967
Samsung Galaxy M21s
Samsung Galaxy M21s
₹23,065
Battery
Charging 67W wired, PD3.0, QC3, 100% in 42 min 15W wired
Type Li-Po 5065 mAh Li-Po 6000 mAh
Body
Build Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5) Glass front (Gorilla Glass 3), plastic back, plastic frame
Dimensions 161.9 x 76.9 x 8.3 mm (6.37 x 3.03 x 0.33 in) 159.2 x 75.1 x 8.9 mm (6.27 x 2.96 x 0.35 in)
SIM Nano-SIM + Nano-SIM Nano-SIMNano-SIM + Nano-SIM
Weight 205 g (7.23 oz) 191 g (6.74 oz)
  Physical pop-up gaming triggers IP53 dust protected and water resistant (vertical water sprays) -
Comms
Bluetooth 5.2, A2DP, LE 5.0, A2DP, LE
Infrared port Yes -
NFC Yes No
Positioning GPS (L1+L5), GLONASS (G1), BDS (B1I+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC GPS, GLONASS, GALILEO, BDS
Radio No FM radio
USB USB Type-C 2.0, OTG USB Type-C 2.0
WLAN Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Display
Protection Corning Gorilla Glass 5 Corning Gorilla Glass 3
Resolution 1080 x 2400 pixels, 20:9 ratio (~395 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
Size 6.67 inches, 107.4 cm2 (~86.3% screen-to-body ratio) 6.4 inches, 100.5 cm2 (~84.1% screen-to-body ratio)
Type OLED, 1B colors, 120Hz, HDR10+, 500 nits (typ) Super AMOLED, 420 nits (peak)
Features
Sensors Fingerprint (side-mounted), accelerometer, gyro, compass, barometer Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Launch
Announced 2021, April 27 2020, November 06
Status Available. Released 2021, April 30 Available. Released 2020, November 06
Main Camera
Features Color spectrum sensor, Dual-LED flash, HDR, panorama LED flash, panorama, HDR
Triple 64 MP, f/1.7, 26mm (wide), 1/2.0", 0.7µm, PDAF 8 MP, f/2.2, 120˚ (ultrawide) 2 MP, f/2.4, (macro) 64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12µm5 MP, f/2.2, (depth)
Video 4K@30fps, 1080p@30/60/120fps, 720p@960fps, HDR 4K@30fps, 1080p@30fps, gyro-EIS
Memory
Card slot No microSDXC (dedicated slot)
Internal 128GB 6GB RAM, 128GB 8GB RAM, 128GB 12GB RAM, 256GB 8GB RAM, 256GB 12GB RAM 64GB 4GB RAM, 128GB 6GB RAM
  UFS 3.1 eMMC 5.1
Misc
Colors Black, Gray, Silver, Bruce Lee Yellow Blue, Black
Models M2012K10C, M2104K10AC SM-F415F, SM-F415F/DS
SAR - 0.38 W/kg (head)    
SAR EU - 0.48 W/kg (head)     1.13 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 34, 38, 39, 40, 41, 42 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 38, 40, 41, 66
5G bands 1, 3, 28, 41, 77, 78 SA/NSA/Sub6 -
Speed HSPA, LTE, 5G HSPA, LTE
Technology GSM / CDMA / HSPA / CDMA2000 / LTE / 5G GSM / HSPA / LTE
  CDMA2000 1x -
Platform
Chipset Mediatek Dimensity 1200 (6 nm) Exynos 9611 (10 nm)
CPU Octa-core (1x3.0 GHz Cortex-A78 & 3x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55) Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
GPU Mali-G77 MC9 Mali-G72 MP3
OS Android 11, MIUI 12.5 Android 10, One UI 2.5
Selfie camera
Features HDR HDR
Single 16 MP, f/2.5, (wide), 1/3.06" 1.0µm 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm
Video 1080p@30fps, 720p@120fps, HDR 1080p@30fps
Sound
3.5mm jack No Yes
Loudspeaker Yes, with stereo speakers Yes
  24-bit/192kHz Hi-Res audio Tuned by JBL -
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