vivo Y91i
#4651
Xiaomi Mi 4s
#4300Category Breakdown
vivo Y91i
Xiaomi Mi 4s
Performance
61.267.5
Camera
19.136.6
Display
56.558.9
Battery
29.125.9
Build
0.20.2
Connectivity
49.559.7
Audio
8.98.9
Overall
31.934.7
Summary
- The vivo Y91i features a larger 6.2-inch IPS LCD display with a resolution of 720 x 1520 pixels, while the Xiaomi Mi 4s has a smaller 5.0-inch IPS LCD with a higher resolution of 1080 x 1920 pixels, resulting in a sharper image.
- In terms of performance, the Y91i is powered by the Snapdragon 439 chipset with 2GB of RAM, whereas the Mi 4s utilizes the more powerful Snapdragon 808 with 3GB of RAM, offering better multitasking capabilities.
- Both phones have a 13 MP rear camera, but the Mi 4s has a slightly faster aperture of f/2.0 compared to the Y91i's f/2.2.
- The Y91i has a larger 4030 mAh battery, while the Mi 4s has a smaller 3260 mAh battery but supports faster 18W charging.
- Software-wise, the Y91i runs on Android 8.1 with Funtouch 4.5, while the Mi 4s originally launched with Android 5.1 but is upgradable to 7.0 with MIUI 10.
Side-by-side Specification Comparison
vivo Y91i
Xiaomi Mi 4s
General
Release Date
2018
2016
Announced
2018
2016
Description
Not to be confused with Vivo Y91i for India
N/A
Display
Size
6.2"
5"
Type
IPS LCD
IPS LCD
Resolution
720 x 1520 pixels, 19:9 ratio (~271 ppi density)
1080 x 1920 pixels, 16:9 ratio (~441 ppi density)
PPI
720
1080
Refresh Rate
60Hz
60Hz
HDR Support
✗
✗
Protection
N/A
N/A
Performance
Chipset
Qualcomm SDM439 Snapdragon 439 (12 nm)
Qualcomm MSM8992 Snapdragon 808 (20 nm)
CPU
Octa-core (4x1.95 GHz Cortex-A53 & 4x1.45 GHz Cortex A53)
Hexa-core (4x1.4 GHz Cortex-A53 & 2x1.8 GHz Cortex-A57)
GPU
Adreno 505
Adreno 418
Memory
16GB 2GB RAM
64GB 3GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC
microSDXC (uses shared SIM slot)
Camera
Main Camera
13 MP, f/2.2, PDAF2 MP, f/2.4, (depth)
13 MP, f/2.0, PDAF
Main Camera Features
LED flash, panorama
Dual-LED dual-tone flash, panorama, HDR
Front Camera
8 MP, f/2.0
5 MP, f/2.0
Front Camera Features
N/A
N/A
Video Recording
1080p@30fps
1080p@30fps, 720p@120fps
Selfie Video
N/A
1080p@30fps
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
4030 mAh
3260 mAh
Battery Details
4030 mAh, non-removable
Li-Ion 3260 mAh, non-removable
Charging Details
N/A
18W wired, QC2, 40% in 60 min
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
155.1 x 75.1 x 8.3 mm (6.11 x 2.96 x 0.33 in)
139.3 x 70.8 x 7.8 mm (5.48 x 2.79 x 0.31 in)
Weight
163.5 g
133 g
Materials
N/A
N/A
Colors
Starry Black, Ocean Blue, Red
Black, White, Gold, Pink
Foldable
✗
✗
SAR
N/A
N/A
Connectivity
SIM
Nano-SIM + Nano-SIM
Nano-SIM + Micro-SIM
Network
GSM / HSPA / LTE
GSM / CDMA / HSPA / LTE
Network Speed
HSPA, LTE
HSPA, LTE Cat4 150/50 Mbps
5G
✗
✗
4G
✓
✓
WiFi
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Bluetooth
4.2, A2DP, LE
4.1, A2DP
NFC
✗
✗
USB
microUSB 2.0, OTG
USB Type-C
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS, GLONASS, BDS
GPS, GLONASS, BDS
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes
Software & Security
Operating System
Android 8.1 (Oreo), Funtouch 4.5
Android 5.1 (Lollipop), upgradable to 7.0 (Nougat), MIUI 10
Fingerprint
✓
✓
Face Unlock
✗
✗
Sensors
Fingerprint (rear-mounted), accelerometer, proximity, compass
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass