vivo Y91 vs Xiaomi Redmi 9A

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Display

Size

6.2 inches
6.5 inches

Resolution

1520 x 720 pixels,
270 PPI
1600 x 720 pixels, 20:9 ratio,
269 PPI

Technology

IPS LCD
IPS LCD

Screen-to-body

82.76 %
81.15 %

Features

Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor

Hardware

System chip

MediaTek Helio P22 MT6762
MediaTek Helio G25

Processor

Octa-core, 2000 MHz, ARM Cortex-A53, 64-bit, 12 nm
Octa-core, 2000 MHz, Arm Cortex-A53, 64-bit, 12 nm

GPU

IMG PowerVR GE8320
PowerVR GE8320

RAM

2GB
2GB LPDDR4

Internal storage

32GB
32GB (eMMC 5.1)

Storage expansion

microSDXC up to 256 GB
microSDXC

OS

Android (8.1 Oreo), Funtouch UI
Android (10)

Battery

Capacity

4030 mAh
5000 mAh

Type

Not user replaceable
Li - Polymer, Not user replaceable

Max charge speed

 
Wired: 10.0W

Camera

Rear

Dual camera
Single camera

Main camera

13 MP (PDAF)
13 MP (PDAF)

Specifications

Aperture size: F2.2
 

Second camera

2 MP (Depth information)
 

Specifications

Aperture size: F2.4
 

Video recording

1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (60 fps)

Features

Time-lapse video, Video calling, Video sharing
 

Front

8 MP
5 MP (HDR)

Design

Dimensions

6.11 x 2.96 x 0.33 inches (155.11 x 75.09 x 8.28 mm)
6.49 x 3.03 x 0.35 inches (164.9 x 77.07 x 9 mm)

Weight

5.77 oz (163.5 g)
the average is 6.2 oz (178 g)
6.91 oz (196.0 g)
the average is 6.2 oz (178 g)

Materials

 
Back: Plastic

Materials & Colors

 
Carbon grey, Sky blue, Ocean green

Biometrics

Fingerprint (touch)
2D Face unlock

Colors

Black, Blue
 

Cellular

LTE (FDD)

Bands 1(2100), 3(1800), 5(850)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)

LTE (TDD)

Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)

UMTS

850, 900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz

Data Speed

LTE Cat 4 (150/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM

Yes
Yes

SIM type

Nano SIM
Nano SIM

HD Voice

 
Yes

VoLTE

 
Yes

Multimedia

Headphones

3.5mm jack
3.5mm jack

Speakers

Earpiece, Loudspeaker
Earpiece, Loudspeaker

Features

Album art cover, Background playback
 

Screen mirroring

Wireless screen share
Wireless screen share

Radio

FM
FM

Additional microphone(s)

for Noise cancellation
 

Connectivity & Features

Bluetooth

5.0
5.0

Wi-Fi

802.11 b, g, n; Hotspot, Wi-Fi Direct
802.11 b, g, n; Wi-Fi Direct, Hotspot

USB

microUSB, USB 2.0
microUSB, USB 2.0

Features

Mass storage device, OTG, Charging
Charging

Location

GPS, A-GPS, Glonass, BeiDou
GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning

Sensors

Accelerometer, Gyroscope, Compass
Accelerometer

Other

VoIP, Tethering, Computer sync, OTA sync
 

Phone features

Notifications

Haptic feedback, Music ringtones, Vibration
 

Other features

Voice dialing, Voice commands, Voice recording
 

Regulatory Approval

Measured SAR

 
 

Head

1.28 W/kg
 

Body

0.61 W/kg
 

Buyers information

In The Box

Documentation, micro USB to USB cable, USB power adapter, SIM ejector, Protective case, Protective film (applied)
Power adapter, 5V2A Charger, Micro-USB cable, SIM eject tool, Warranty card, User guide
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