Product
Xiaomi Redmi 3 Pro
Xiaomi Redmi 3 Pro
Vivo Y15
Vivo Y15
Battery
Charging 10W wired -
Type Li-Ion 4100 mAh, non-removable 5000 mAh, non-removable
Body
Build Glass front, aluminum back, aluminum frame Glass front, plastic back, plastic frame
Dimensions 139.3 x 69.6 x 8.5 mm (5.48 x 2.74 x 0.33 in) 159.4 x 76.8 x 8.9 mm (6.28 x 3.02 x 0.35 in)
SIM Nano-SIM + Micro-SIM Nano-SIM + Nano-SIM
Weight 144 g (5.08 oz) 190.5 g (6.74 oz)
Comms
Bluetooth 4.1, A2DP 5.0, A2DP, LE
Infrared port Yes -
NFC No No
Positioning GPS, GLONASS, BDS GPS, GLONASS, GALILEO, BDS
Radio FM radio FM radio
USB microUSB 2.0 microUSB 2.0, OTG
WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Display
Resolution 720 x 1280 pixels, 16:9 ratio (~294 ppi density) 720 x 1544 pixels, 19.3:9 ratio (~268 ppi density)
Size 5.0 inches, 68.9 cm2 (~71.1% screen-to-body ratio) 6.35 inches, 99.6 cm2 (~81.4% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass Fingerprint (rear-mounted), accelerometer, proximity, compass
Launch
Announced 2016, March. Released 2016, April 2019, May 28. Released 2019, May
Status Discontinued Discontinued
Main Camera
Features LED flash, HDR, panorama LED flash, HDR, panorama
Single 13 MP, f/2.0, PDAF -
Triple - 13 MP, f/2.2, PDAF 8 MP, f/2.2, 16mm (ultrawide) 2 MP, f/2.4, (depth)
Video 1080p@30fps 1080p@30fps
Memory
Card slot microSDXC (uses shared SIM slot) microSDXC (dedicated slot)
Internal 32GB 3GB RAM 64GB 4GB RAM
  eMMC 4.5 eMMC 5.1
Misc
Colors Dark Gray, Silver, Gold Aqua Blue, Burgundy Red
SAR - 1.01 W/kg (head)     0.75 W/kg (body)    
SAR EU 1.33 W/kg (head)     -
Network
2G bands GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 2100
4G bands 1, 3, 7, 38, 39, 40, 41 1, 3, 5, 8, 40, 41
Speed HSPA, LTE, EV-DO Rev.A 3.1 Mbps HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Technology GSM / CDMA / HSPA / EVDO / LTE GSM / HSPA / LTE
  CDMA2000 1xEV-DO -
Our Tests
Audio quality Noise -90.6dB / Crosstalk -92.3dB -
Battery (old) Endurance rating 104h -
Camera Photo / Video -
Display Contrast ratio: 1145:1 (nominal), 2.803 (sunlight) -
Loudspeaker Voice 67dB / Noise 70dB / Ring 74dB -
Performance Basemark OS II 2.0: 5427Basemark X: 262 -
Platform
Chipset Qualcomm MSM8939v2 Snapdragon 616 (28 nm) Mediatek MT6762 Helio P22 (12 nm)
CPU Octa-core (4x1.5 GHz Cortex-A53 & 4x1.2 GHz Cortex-A53) Octa-core 2.0 GHz Cortex-A53
GPU Adreno 405 PowerVR GE8320
OS Android 5.1 (Lollipop), MIUI 7.3 Android 9.0 (Pie), Funtouch 9
Selfie camera
Single 5 MP, f/2.2 16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes