Redmi 15a 5g vs Vivo Y81 4gb Ram

Key Specs

Battery
-	3260 mAh
Display
-	6.22 inches (15.8 cm)
Front Camera
-	5 MP
Processor
-	MediaTek Helio P22
RAM
-	4 GB
Rear Camera
-	13 MP

Audio

Audio Features
Dual stereo speaker setup	-
Audio Jack
3.5mm	-
Loudspeaker
200% volume boost	-
Stereo Speakers
Dual stereo speaker setup	-

Battery

Capacity
6300mAh	3260 mAh
Quick Charging
15W	-
Removable
No	No
Type
Lithium-ion	Li-ion
USB Type-C
Yes	No

Camera

Autofocus
Yes	-
Flash
Yes	-
Front Camera
32MP	-
Rear Camera
8MP	-
Video Recording
1080p at 30 fps	-

Design

Build Material
All-plastic	Back: Plastic
Colours
Awesome Blue, Amaze Purple, Ace Black	Black, Gold
Height
-	155 mm
Thickness
-	7.7 mm
Water Resistance
IP52 rating	-
Weight
210 gram	148 grams
Width
-	75 mm

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Dimensions

Dimensions
17.16 X 7.95 X 0.82 cm	-
Height
17.16 cm	-
Thickness
0.82 cm	-
Width
7.95 cm	-

Display

Aspect Ratio
20:9	19:9
Bezel-less display
IPS LCD	Yes with notch
Brightness
800 nits	-
Display Type
IPS LCD	IPS LCD
Pixel Density
254 ppi	270 ppi
Refresh Rate
120 Hz	-
Resolution
720 x 1600 pixels	720x1520 px (HD+)
Screen Protection
9H-hardness	-
Screen Size
6.9 inch	6.22 inches (15.8 cm)
Screen to Body Ratio (calculated)
-	82.66 %
Screen to Body Ratio (claimed by the brand)
84.3%	88 %
Touch Screen
-	Yes, Capacitive Touchscreen, Multi-touch

Front Camera

Flash
-	Yes, Screen flash
Resolution
-	5 MP f/2.2, Primary Camera

General

Brand
Redmi	vivo
Custom UI
HyperOS 3.0	Funtouch OS
Launch Date
March 27, 2026	September 28, 2018 (Official)
Model
15A	-
Operating System
Android 16	Android v8.1 (Oreo)

Main Camera

Autofocus
-	Yes, Phase Detection autofocus
Camera Features
-	Digital Zoom Auto Flash Face detection Touch to focus
Camera Setup
-	Single
Flash
-	Yes, LED Flash
Image Resolution
-	4128 x 3096 Pixels
Resolution
-	13 MP f/2.2, Primary Camera
Sensor
-	CMOS image sensor
Settings
-	Exposure compensation, ISO control
Shooting Modes
-	Continuous Shooting High Dynamic Range mode (HDR)

Multimedia

Audio Jack
-	3.5 mm
FM Radio
-	Yes
Loudspeaker
-	Yes

Network & Connectivity

Bluetooth
v5.4	Yes, v5.0
GPS
Yes	Yes with A-GPS, Glonass
NFC
Yes	-
Network Support
5G	5G Not Supported in India, 4G Supported in India, 3G, 2G
SAR Value
-	Head: 1.014 W/kg, Body: 0.445 W/kg
SIM 1
Nano	4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 850(band 5) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available
SIM 2
Nano	4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 850(band 5) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available
SIM Size
Dual SIM (Nano + Nano)	SIM1: Nano, SIM2: Nano
SIM Slot(s)
Dual SIM slot	Dual SIM, GSM+GSM
USB Connectivity
-	Mass storage device, USB charging, microUSB 2.0
VoLTE
Yes	Yes
Wi-Fi
Wi-Fi 5 (802.11a/b/g/n/ac)	Yes, Wi-Fi 4 (802.11 b/g/n)
Wi-Fi Calling
Yes	-
Wi-Fi Features
-	Mobile Hotspot

Performance

Architecture
-	64 bit
CPU
-	Octa core, 2 GHz, Cortex A53
Chipset
-	MediaTek Helio P22
Fabrication
-	12 nm
Graphics
Mali-G57 MC2	PowerVR GE8320
Processor
Unisoc T8300	-
Processor Fabrication
6nm	-
RAM
4GB/6GB	4 GB
RAM Type
LPDDR4X	LPDDR3
RAM type
-	LPDDR3

Sensors

Fingerprint Sensor
Side-mounted fingerprint sensor	Yes
Fingerprint Sensor Position
-	Rear
Infrared Sensor
Built-in Infrared (IR) Blaster	-
Other Sensors
Accelerometer, Proximity Sensor, Ambient Light Sensor, E-Compass	Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope

Storage

Expandable Memory
-	Yes, Up to 256 GB
Internal Memory
64GB/128GB	32 GB
Storage Type
UFS 2.2	eMMC 5.1
USB OTG
-	Yes