Product
Xiaomi Redmi K40
Xiaomi Redmi K40
Samsung Gear Sport
Samsung Gear Sport
Battery
Charging 33W wired, PD3.0, QC3, 100% in 52 min Wireless (Qi)
Stand-by - Up to 48 h (3G)
Type Li-Po 4520 mAh Li-Ion 300 mAh, non-removable
Body
Dimensions 163.7 x 76.4 x 7.8 mm (6.44 x 3.01 x 0.31 in) 44.6 x 42.9 x 11.6 mm (1.76 x 1.69 x 0.46 in)
SIM Nano-SIM + Nano-SIM No
Weight 196 g (6.91 oz) 67g (w/ strap); 50g (w/о strap) (1.76 oz)
  - 50m water resistant Compatible with standard 20mm straps MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Camera
  -
Comms
Bluetooth 5.1, A2DP, LE 4.2, A2DP, LE
Infrared port Yes -
NFC Yes Yes
Positioning GPS (L1+L5), GLONASS (G1), BDS (B1I+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC GPS, GLONASS
Radio No No
USB USB Type-C 2.0, OTG No
WLAN Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct Wi-Fi 802.11 b/g/n
Display
Protection Corning Gorilla Glass 5 Corning Gorilla Glass 3
Resolution 1080 x 2400 pixels, 20:9 ratio (~395 ppi density) 360 x 360 pixels (~424 ppi density)
Size 6.67 inches, 107.4 cm2 (~85.9% screen-to-body ratio) 1.2 inches
Type Super AMOLED, 120Hz, HDR10+, 1300 nits (peak) Super AMOLED
  - Rotating bezel
Features
Sensors Fingerprint (side-mounted), accelerometer, gyro, proximity, compass Accelerometer, gyro, heart rate, barometer
  - Bixby natural language commands and dictation Samsung Pay
Launch
Announced 2021, February 25 2017, August. Released 2017, October
Status Available. Released 2021, March 04 Discontinued
Main Camera
Features Color spectrum sensor, LED flash, HDR, panorama -
Triple 48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 119˚ (ultrawide) 5 MP, f/2.4, 50mm (macro), 1/5.0", 1.12µm -
Video 4K@30fps, 1080p@30/60/120/240/960fps, gyro-EIS -
Memory
Card slot No No
Internal 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM 4GB 768MB RAM
  UFS 3.1 -
Misc
Colors Black, White, Aurora Black, Blue
Models M2012K11AC SM-R600
Network
2G bands GSM 850 / 900 / 1800 / 1900 N/A
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -
4G bands 1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42 -
5G bands 1, 3, 28, 41, 77, 78 SA/NSA/Sub6 -
EDGE - No
GPRS - No
Speed HSPA, LTE, 5G -
Technology GSM / CDMA / HSPA / CDMA2000 / LTE / 5G No cellular connectivity
  CDMA2000 1x -
Platform
Chipset Qualcomm SM8250-AC Snapdragon 870 5G (7 nm) Exynos 3250 Dual
CPU Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585) Dual-core 1.0 GHz Cortex-A7
GPU Adreno 650 Mali-400MP2
OS Android 11, MIUI 12 Tizen OS 5.5
Selfie camera
Features HDR -
Single 20 MP, f/2.5, (wide), 1/3.4", 0.8µm -
Video 1080p@30fps, 720p@120fps -
Sound
3.5mm jack No No
Loudspeaker Yes, with stereo speakers No
  24-bit/192kHz Hi-Res audio -