Product
Xiaomi Redmi 3s
Xiaomi Redmi 3s
₹12,271
Xiaomi Mi A3
Xiaomi Mi A3
₹14,999
Battery
Charging 10W wired 18W wired, QC3
Type Li-Ion 4100 mAh, non-removable Li-Po 4030 mAh, non-removable
Body
Build Glass front, aluminum back, aluminum frame Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frame
Dimensions 139.3 x 69.6 x 8.5 mm (5.48 x 2.74 x 0.33 in) 153.5 x 71.9 x 8.5 mm (6.04 x 2.83 x 0.33 in)
SIM Nano-SIM + Micro-SIM Nano-SIM + Nano-SIM
Weight 144 g (5.08 oz) 173.8 g (6.14 oz)
Comms
Bluetooth 4.1, A2DP 5.0, A2DP, LE, aptX HD
Infrared port Yes Yes
NFC No No
Positioning GPS, GLONASS, BDS GPS, GLONASS, BDS
Radio FM radio FM radio
USB microUSB 2.0 USB Type-C 2.0
WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Display
Protection - Corning Gorilla Glass 5
Resolution 720 x 1280 pixels, 16:9 ratio (~294 ppi density) 720 x 1560 pixels, 19.5:9 ratio (~282 ppi density)
Size 5.0 inches, 68.9 cm2 (~71.1% screen-to-body ratio) 6.09 inches, 91.0 cm2 (~82.5% screen-to-body ratio)
Type IPS LCD Super AMOLED
Features
Sensors Accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Launch
Announced 2016, June. Released 2016, June 2019, July 17. Released 2019, July 24
Status Discontinued Discontinued
Main Camera
Features LED flash, HDR, panorama LED flash, HDR, panorama
Single 13 MP, f/2.0, PDAF -
Triple - 48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (depth)
Video 1080p@30fps 4K@30fps, 1080p@30/60/120fps
Memory
Card slot microSDXC (uses shared SIM slot) microSDXC (uses shared SIM slot)
Internal 16GB 2GB RAM, 32GB 3GB RAM 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM
  eMMC 5.1 UFS 2.1
Misc
Colors Gold, Dark Gray, Silver Kind of Gray, Not just Blue, More than White
Models 2016031 M1906F9SH, M1906F9SI
SAR 0.22 W/kg (head)     1.22 W/kg (body)     0.53 W/kg (head)     0.72 W/kg (body)    
SAR EU 0.62 W/kg (head)     0.43 W/kg (body)     0.30 W/kg (head)     1.10 W/kg (body)    
Network
2G bands GSM 900 / 1800 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 900 / 2100 HSDPA 850 / 900 / 1700 / 1900 / 2100
4G bands 3, 5, 40 - India 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 400/50 Mbps
Technology GSM / HSPA / LTE GSM / HSPA / LTE
Our Tests
Audio quality Noise -94.3dB / Crosstalk -91.8dB Noise -93.7dB / Crosstalk -93.0dB
Battery (old) Endurance rating 104h Endurance rating 101h
Camera Photo / Video Photo / Video
Display Contrast ratio: 1087:1 (nominal), 2.913 (sunlight) 363 nits max brightness (measured)
Loudspeaker Voice 66dB / Noise 70dB / Ring 70dB Voice 74dB / Noise 74dB / Ring 81dB
Performance Basemark OS II 2.0: 882Basemark X: 7263 Basemark OS II 2.0: 2345Basemark X: 17948
Platform
Chipset Qualcomm MSM8937 Snapdragon 430 (28 nm) Qualcomm SDM665 Snapdragon 665 (11 nm)
CPU Octa-core 1.4 GHz Cortex-A53 Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU Adreno 505 Adreno 610
OS Android 6.0.1 (Marshmallow), MIUI 9.2 Android 9.0 (Pie), upgradable to Android 11, Android One
Selfie camera
Features - HDR
Single 5 MP, f/2.2 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
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