Product
Xiaomi Mi 4i
Xiaomi Mi 4i
Xiaomi Redmi Y1 Lite
Xiaomi Redmi Y1 Lite
Battery
Charging 10W wired, QC1 -
Music play - Up to 92 h
Stand-by - Up to 264 h (3G)
Talk time Up to 35 h (3G) Up to 35 h (3G)
Type Li-Ion 3120 mAh, non-removable Li-Ion 3080 mAh, non-removable
Body
Build Glass front (Gorilla Glass), plastic back, plastic frame Glass front (Gorilla Glass 3), aluminum back, aluminum frame
Dimensions 138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in) 153 x 76.2 x 7.6 mm (6.02 x 3.00 x 0.30 in)
SIM Dual SIM (Micro-SIM, dual stand-by) Nano-SIM + Nano-SIM
Weight 130 g (4.59 oz) 150 g (5.29 oz)
Comms
Bluetooth 4.1, A2DP 4.2, A2DP, LE
Infrared port - Yes
NFC No No
Positioning GPS, GLONASS, BDS GPS, GLONASS, BDS
Radio Stereo FM radio FM radio
USB microUSB 2.0, OTG microUSB 2.0
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 Corning Gorilla Glass 3
Resolution 1080 x 1920 pixels, 16:9 ratio (~441 ppi density) 720 x 1280 pixels, 16:9 ratio (~267 ppi density)
Size 5.0 inches, 68.9 cm2 (~71.7% screen-to-body ratio) 5.5 inches, 83.4 cm2 (~71.5% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Accelerometer, gyro, proximity, compass Accelerometer, gyro, proximity, compass
Launch
Announced 2015, April. Released 2015, April 2017, November. Released 2017, November
Status Discontinued Discontinued
Main Camera
Features Dual-LED dual-tone flash, panorama, HDR LED flash, HDR, panorama
Single 13 MP, f/2.0, AF 13 MP, f/2.2, PDAF
Video 1080p@30fps, 480p@120fps 1080p@30fps
Memory
Card slot No microSDXC (dedicated slot)
Internal 16GB 2GB RAM, 32GB 2GB RAM 16GB 2GB RAM
  eMMC 4.5 eMMC 5.1
Misc
Colors Dark Gray, Black, White, Yellow, Blue, Pink Gold, Dark Grey, Silver, Rose Gold
Models 2015015 MDI6
SAR 0.51 W/kg (head)     0.60 W/kg (body)     1.53 W/kg (head)     1.32 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 3, 7, 38, 39, 40, 41 1, 3, 4, 5, 7, 8, 20, 38, 40
Speed HSPA, LTE Cat4 150/50 Mbps HSPA, LTE
Technology GSM / HSPA / LTE GSM / HSPA / LTE
  TD-SCDMA -
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 -
Platform
Chipset Qualcomm MSM8939 Snapdragon 615 (28 nm) Qualcomm MSM8917 Snapdragon 425 (28 nm)
CPU Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53) Quad-core Cortex-A53
GPU Adreno 405 Adreno 308
OS Android 5.0.2 (Lollipop), MIUI 8.2 Android 7.0 (Nougat), MIUI 11
Selfie camera
Single 5 MP, f/1.8 5 MP, f/2.0
Video
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes