Product
Xiaomi Redmi 3s Prime
Xiaomi Redmi 3s Prime
Samsung Z4
Samsung Z4
Battery
Charging 10W wired -
Type Li-Ion 4100 mAh, non-removable Li-Ion 2050 mAh, removable
Body
Build Glass front, aluminum back, aluminum frame -
Dimensions 139.3 x 69.6 x 8.5 mm (5.48 x 2.74 x 0.33 in) 132.9 x 69.2 x 10.3 mm (5.23 x 2.72 x 0.41 in)
SIM Nano-SIM + Micro-SIM Single SIM (Micro-SIM) or Hybrid Dual SIM (Micro-SIM, dual stand-by)
Weight 144 g (5.08 oz) 143 g (5.04 oz)
Comms
Bluetooth 4.1, A2DP, LE 4.0, A2DP, LE
Infrared port Yes -
NFC No No
Positioning GPS, GLONASS, BDS GPS, GLONASS
Radio FM radio FM radio
USB microUSB 2.0 microUSB 2.0, OTG
WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Display
Resolution 720 x 1280 pixels, 16:9 ratio (~294 ppi density) 480 x 800 pixels, 5:3 ratio (~207 ppi density)
Size 5.0 inches, 68.9 cm2 (~71.1% screen-to-body ratio) 4.5 inches, 57.6 cm2 (~62.7% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Accelerometer, proximity
Launch
Announced 2016, August. Released 2016, August 2017, May. Released 2017, June
Status Discontinued Discontinued
Main Camera
Features LED flash, HDR, panorama Dual-LED flash, panorama, HDR
Single 13 MP, f/2.0, PDAF 5 MP, f/2.2
Video 1080p@30fps 720p@30fps
Memory
Card slot microSDXC (uses shared SIM slot) microSDXC (uses shared SIM slot)
Internal 32GB 3GB RAM 8GB 1GB RAM
  eMMC 5.1 -
Misc
Colors Gold, Dark Gray, Silver Black, Gold
Models - SM-Z400F, SM-Z400Y
SAR EU 0.62 W/kg (head)     0.43 W/kg (body)     -
Network
2G bands GSM 900 / 1800 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G bands HSDPA 900 / 2100 - India HSDPA 900 / 2100
4G bands 3, 5, 40 - India LTE
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Technology GSM / HSPA / LTE GSM / HSPA / LTE
  1, 3, 7, 8, 20, 40 - Global -
Our Tests
Battery (old) Endurance rating 85h -
Camera Photo / Video -
Performance GFXBench: 4.9fps (ES 3.1 onscreen) -
Platform
Chipset Qualcomm MSM8937 Snapdragon 430 (28 nm) -
CPU Octa-core 1.4 GHz Cortex-A53 Quad-core 1.5 GHz
GPU Adreno 505 -
OS Android 6.0.1 (Marshmallow), MIUI 9.2 Tizen 3.0
Selfie camera
Features - LED flash
Single 5 MP, f/2.2 5 MP, f/2.2
Video 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes