Lava Z81 vs Realme C21y

Key Specs

Battery
Battery	3000 mAh	5000 mAh
Display
Display	5.7 inches (14.48 cm)	6.5 inches (16.51 cm)
Front Camera
Front Camera	13 MP	5 MP
Processor
Processor	MediaTek Helio A22	Unisoc T610
RAM
RAM	3 GB	3 GB
Rear Camera
Rear Camera	13 MP	13 MP + 2 MP + 2 MP

Battery

Capacity
Capacity	3000 mAh	5000 mAh
Removable
Removable	No	No
Standby time
Standby Time	Up to 319 Hours(2G)	-
TalkTime
TalkTime	Up to 19.3 Hours(3G)	-
Type
Type	Li-Polymer	Li-ion
USB Type-C
USB Type-C	No	No

Design

Colours
Colours	Black, Gold	Cross Blue, Cross Black
Height
Height	152.2 mm	164.5 mm
Thickness
Thickness	7.9 mm	9.1 mm
Weight
Weight	141.6 grams	200 grams Below
Width
Width	73 mm	76 mm

Display

Aspect Ratio
Aspect Ratio	18:9	20:9
Bezel-less display
Bezel-less display	Yes	Yes with waterdrop notch
Brightness
Brightness	-	420 nits
Display Type
Display Type	IPS LCD	IPS LCD
Pixel Density
Pixel Density	282 ppi	270 ppi
Refresh Rate
Refresh Rate	-	60 Hz
Resolution
Resolution	720x1440 px (HD+)	720x1600 px (HD+)
Screen Protection
Screen Protection	Corning Gorilla Glass v3	-
Screen Size
Screen Size	5.7 inches (14.48 cm)	6.5 inches (16.51 cm)
Screen to Body Ratio (calculated)
Screen to Body Ratio (calculated)	75.46 %	81.59 %
Screen to Body Ratio (claimed by the brand)
Screen to Body Ratio (claimed by the brand)	-	88.7 %
Touch Screen
Touch Screen	Yes, Capacitive Touchscreen, Multi-touch	Yes, Capacitive Touchscreen, Multi-touch

Front Camera

Camera Features
Camera Features	-	Fixed Focus
Camera Setup
Camera Setup	-	Single
Resolution
Resolution	-	5 MP f/2.2, Wide Angle, Primary Camera(5.0" sensor size, 1.12µm pixel size)
Sensor
Sensor	-	CMOS
Video Recording
Video Recording	-	1280x720 @ 30 fps

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General

Brand
Brand	Lava	realme
Custom UI
Custom UI	Star OS	Realme UI
Launch Date
Launch Date	November 2, 2018 (Official)	August 30, 2021 (Official)
Operating System
Operating System	Android v8.1 (Oreo)	Android v11

Main Camera

Autofocus
Autofocus	Yes	Yes, Phase Detection autofocus
Camera Features
Camera Features	Digital Zoom Auto Flash Face detection Touch to focus	4 x Digital Zoom Auto Flash Face detection Touch to focus
Camera Setup
Camera Setup	Single	Triple
Flash
Flash	Yes, LED Flash	Yes, LED Flash
Image Resolution
Image Resolution	4128 x 3096 Pixels	4128 x 3096 Pixels
Resolution
Resolution	13 MP, Primary Camera	13 MP f/2.2, Wide Angle (80° field-of-view), Primary Camera(25.5 mm focal length, 3" sensor size, 1.12µm pixel size)2 MP f/2.4, Macro Camera(21.8 mm focal length, 5.0" sensor size, 1.75µm pixel size)2 MP f/2.4(21.8 mm focal length, 5.0" sensor size, 1.75µm pixel size)
Sensor
Sensor	-	CMOS image sensor
Settings
Settings	Exposure compensation, ISO control	Exposure compensation, ISO control
Shooting Modes
Shooting Modes	Continuous Shooting High Dynamic Range mode (HDR)	Continuous Shooting High Dynamic Range mode (HDR)
Video Recording
Video Recording	-	1920x1080 @ 30 fps

Multimedia

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

Network & Connectivity

Bluetooth
Bluetooth	Yes, v4.1	Yes, v5.0
GPS
GPS	Yes with A-GPS, Glonass	Yes with A-GPS, Glonass
NFC
NFC	-	No
Network Support
Network Support	5G Not Supported in India, 4G Supported in India, 3G, 2G	5G Not Supported in India, 4G Supported in India, 3G, 2G
SAR Value
SAR Value	-	Head: 0.855 W/kg, Body: 0.674 W/kg
SIM 1
SIM 1	4G Bands: TD-LTE 2300(band 40) / 2500(band 41) FD-LTE 2100(band 1) / 1800(band 3) / 850(band 5) 3G Bands: UMTS 2100 / 900 MHz 2G Bands: GSM 1800 / 900 MHz GPRS: Available EDGE: Available	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
SIM 2	4G Bands: TD-LTE 2300(band 40) / 2500(band 41) FD-LTE 2100(band 1) / 1800(band 3) / 850(band 5) 3G Bands: UMTS 2100 / 900 MHz 2G Bands: GSM 1800 / 900 MHz GPRS: Available EDGE: Available	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
SIM Size	SIM1: Nano, SIM2: Nano	SIM1: Nano, SIM2: Nano
SIM Slot(s)
SIM Slot(s)	Dual SIM, GSM+GSM	Dual SIM, GSM+GSM
USB Connectivity
USB Connectivity	Mass storage device, USB charging, microUSB	Mass storage device, USB charging, microUSB 2.0
VoLTE
VoLTE	Yes	Yes
Wi-Fi
Wi-Fi	Yes, Wi-Fi 4 (802.11 b/g/n)	Yes, Wi-Fi 4 (802.11 b/g/n)
Wi-Fi Features
Wi-Fi Features	Mobile Hotspot	Mobile Hotspot

Performance

CPU
CPU	Quad core, 2 GHz, Cortex A53	Octa core (1.8 GHz, Dual core, Cortex A75 + 1.8 GHz, Hexa Core, Cortex A55)
Chipset
Chipset	MediaTek Helio A22	Unisoc T610
Fabrication
Fabrication	-	12 nm
Graphics
Graphics	PowerVR GE8300	Mali-G52
RAM type
RAM Type	DDR3	LPDDR4X

Sensors

Fingerprint Sensor
Fingerprint Sensor	Yes	Yes
Fingerprint Sensor Position
Fingerprint Sensor Position	Rear	Rear
Other Sensors
Other Sensors	Light sensor, Proximity sensor, Accelerometer	Light sensor, Proximity sensor, Accelerometer

Storage

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