Product
Xiaomi Redmi K30 Pro
Xiaomi Redmi K30 Pro
Samsung Galaxy C9 Pro
Samsung Galaxy C9 Pro
Battery
Charging 30W wired, PD3.0, QC4, 100% in 63 min 18W wired
Type Li-Po 4700 mAh Li-Ion 4000 mAh, non-removable
Body
Build Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame Glass front (Gorilla Glass 4), aluminum back, aluminum frame
Dimensions 163.3 x 75.4 x 8.9 mm (6.43 x 2.97 x 0.35 in) 162.9 x 80.7 x 6.9 mm (6.41 x 3.18 x 0.27 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 218 g (7.69 oz) 189 g (6.67 oz)
Comms
Bluetooth 5.1, A2DP, LE, aptX HD, aptX Adaptive 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) GPS, GLONASS/ BDS (region dependent)
Radio No Stereo FM radio with RDS
USB USB Type-C 2.0, OTG USB Type-C
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 4
Resolution 1080 x 2400 pixels, 20:9 ratio (~395 ppi density) 1080 x 1920 pixels, 16:9 ratio (~367 ppi density)
Size 6.67 inches, 107.4 cm2 (~87.2% screen-to-body ratio) 6.0 inches, 99.2 cm2 (~75.5% screen-to-body ratio)
Type Super AMOLED, HDR10+, 500 nits (typ) Super AMOLED
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, compass, barometer Fingerprint (front-mounted), accelerometer, proximity, compass
  Virtual proximity sensing ANT+
Launch
Announced 2020, March 24 2016, October. Released 2016, November
Status Available. Released 2020, March 27 Discontinued
Main Camera
Features Dual-LED dual-tone flash, HDR, panorama Dual-LED dual-tone flash, panorama, HDR
Quad 64 MP, f/1.9, 26mm (wide), 1/1.72", 0.8µm, PDAF 5 MP, f/2.2, 50mm (telephoto macro), AF 13 MP, f/2.4, 123˚ (ultrawide), 1.12µm 2 MP, f/2.4, (depth) -
Single - 16 MP, f/1.9, PDAF
Video 8K@24/30fps, 4K@30/60fps, 1080p@30/60/120/240fps, 1080p@960fps; gyro-EIS 1080p@30fps
Memory
Card slot No microSDXC (dedicated slot)
Internal 128GB 6GB RAM, 128GB 8GB RAM, 128GB 12GB RAM, 256GB 8GB RAM 64GB 6GB RAM
  UFS 3.0 (128GB 6GB RAM) UFS 3.1 (128GB 8/12GB RAM, 256GB 8GB RAM) eMMC 5.1
Misc
Colors Neon Blue, Phantom White, Electric Purple, Cyber Gray Gold, Pink Gold, Black
Models - SM-C9000, SM-C900F, SM-C9008, SM-C900Y
SAR EU - 0.79 W/kg (head)     1.62 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 900 / 1900 / 2100 - China HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 3, 5, 7, 8, 34, 38, 39, 40, 41 - China 1, 3, 5, 40, 41 - India
5G bands 1, 3, 41, 78, 79 SA/NSA -
Speed HSPA, LTE, 5G HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Technology GSM / CDMA / HSPA / EVDO / LTE / 5G GSM / HSPA / LTE
  CDMA2000 1xEV-DO -
Our Tests
Performance - GFXBench: 5.8fps (ES 3.1 onscreen)
Platform
Chipset Qualcomm SM8250 Snapdragon 865 5G (7 nm+) Qualcomm MSM8976 Pro Snapdragon 653 (28 nm)
CPU Octa-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55) Octa-core (4x1.95 GHz Cortex-A72 & 4x1.4 GHz Cortex-A53)
GPU Adreno 650 Adreno 510
OS Android 10, MIUI 11 Android 6.0.1 (Marshmallow), upgradable to Android 8.0 (Oreo)
Selfie camera
Features HDR -
Single Motorized pop-up 20 MP, (wide), 1/3.4", 0.8µm 16 MP, f/1.9, 27mm (wide), 1/3.06", 1.0µm
Video 1080p@30fps, 720p@120fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes, with stereo speakers
  24-bit/192kHz Hi-Res audio -