Product
Xiaomi Mi 4i
Xiaomi Mi 4i
₹12,999
Xiaomi Redmi 6
Xiaomi Redmi 6
₹10,499
Battery
Charging 10W wired, QC1 -
Talk time Up to 35 h (3G) -
Type Li-Ion 3120 mAh, non-removable Li-Po 3000 mAh, non-removable
Body
Build Glass front (Gorilla Glass), plastic back, plastic frame Glass front, plastic back, plastic frame
Dimensions 138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in) 147.5 x 71.5 x 8.3 mm (5.81 x 2.81 x 0.33 in)
SIM Dual SIM (Micro-SIM, dual stand-by) Nano-SIM + Nano-SIM
Weight 130 g (4.59 oz) 146 g (5.15 oz)
Comms
Bluetooth 4.1, A2DP 4.2, A2DP, LE
NFC No No
Positioning GPS, GLONASS, BDS GPS, GLONASS, BDS
Radio Stereo FM radio FM radio
USB microUSB 2.0, OTG microUSB 2.0, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Display
Protection Corning scratch-resistant glass -
Resolution 1080 x 1920 pixels, 16:9 ratio (~441 ppi density) 720 x 1440 pixels, 18:9 ratio (~295 ppi density)
Size 5.0 inches, 68.9 cm2 (~71.7% screen-to-body ratio) 5.45 inches, 76.7 cm2 (~72.7% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Accelerometer, gyro, proximity, compass Fingerprint (rear-mounted), accelerometer, proximity, compass
Launch
Announced 2015, April. Released 2015, April 2018, June. Released 2018, June
Status Discontinued Discontinued
Main Camera
Dual - 12 MP, f/2.2, 1.25 μm, PDAF 5 MP, f/2.2, (depth)
Features Dual-LED dual-tone flash, panorama, HDR LED flash, HDR, panorama
Single 13 MP, f/2.0, AF -
Video 1080p@30fps, 480p@120fps 1080p@30fps
Memory
Card slot No microSDXC (dedicated slot)
Internal 16GB 2GB RAM, 32GB 2GB RAM 32GB 3GB RAM, 64GB 3GB RAM, 64GB 4GB RAM
  eMMC 4.5 eMMC 5.1
Misc
Colors Dark Gray, Black, White, Yellow, Blue, Pink Black, Grey, Blue, Gold, Rose Gold
Models 2015015 M1804C3DG, M1804C3DH, M1804C3DI
SAR 0.51 W/kg (head)     0.60 W/kg (body)     0.55 W/kg (head)     1.42 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 3, 7, 38, 39, 40, 41 1, 2, 3, 4, 5, 7, 8, 20, 38, 40 - Global
Speed HSPA, LTE Cat4 150/50 Mbps HSPA, LTE
Technology GSM / HSPA / LTE GSM / CDMA / HSPA / LTE
  TD-SCDMA 1, 3, 5, 7, 8, 34, 38, 39, 40, 41
Our Tests
Battery (old) Endurance rating 67h -
Camera Photo / Video -
Display Contrast ratio: 1055:1 (nominal), 2.641 (sunlight) -
Loudspeaker Voice 63dB / Noise 65dB / Ring 68dB -
Performance Basemark X: 4875 AnTuTu: 75182 (v7) GeekBench: 3639 (v4.4) GFXBench: 4.8fps (ES 3.1 onscreen)
Platform
Chipset Qualcomm MSM8939 Snapdragon 615 (28 nm) Mediatek MT6762 Helio P22 (12 nm)
CPU Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53) Octa-core 2.0 GHz Cortex-A53
GPU Adreno 405 PowerVR GE8320
OS Android 5.0.2 (Lollipop), MIUI 8.2 Android 8.1 (Oreo), planned upgrade to Android 10, MIUI 12
Selfie camera
Single 5 MP, f/1.8 5 MP
Video 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
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