Lava Iris 356 vs Lava Z40

Key Specs

Battery
Battery	1500 mAh	2250 mAh
Display
Display	3.5 inches (8.89 cm)	4.0 inches (10.16 cm)
Front Camera
Front Camera	0.3 MP	2 MP
Processor
Processor	MediaTek MT6572	-
RAM
RAM	-	1 GB
Rear Camera
Rear Camera	1.3 MP	2 MP

Battery

Capacity
Capacity	1500 mAh	2250 mAh
Removable
Removable	-	Yes
Standby time
Standby Time	Up to 200 Hours(2G)	Up to 239 Hours(2G)
TalkTime
TalkTime	Up to 5 Hours(2G)	Up to 17.4 Hours(4G) / Up to 16.2 Hours(3G)
Type
Type	Li-ion	Li-ion
USB Type-C
USB Type-C	-	No

Camera

Camera Features
Camera Features	Digital Zoom Face detection	-
Camera Setup
Camera Setup	Single	-
Flash
Flash	Yes, LED Flash	-
Image Resolution
Image Resolution	1280 x 1024 Pixels	-
Resolution
Resolution	0.3 MP, Primary Camera	-

Design

Colours
Colours	Black, White, Grey	Black, Gold
Height
Height	116.9 mm	125.5 mm
Thickness
Thickness	12.6 mm	11.65 mm
Weight
Weight	112 grams	120 grams
Width
Width	62.5 mm	63.9 mm

Display

Aspect Ratio
Aspect Ratio	-	16:9
Display Type
Display Type	TFT	IPS LCD
Pixel Density
Pixel Density	165 ppi	224 ppi
Resolution
Resolution	-	400x800 px
Screen Protection
Screen Protection	-	Corning Gorilla Glass
Screen Size
Screen Size	3.5 inches (8.89 cm)	4.0 inches (10.16 cm)
Screen to Body Ratio (calculated)
Screen to Body Ratio (calculated)	49.92 %	51.49 %
Touch Screen
Touch Screen	Yes, Capacitive Touchscreen, Multi-touch	Yes, Capacitive Touchscreen, Multi-touch

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General

Brand
Brand	Lava	Lava
Custom UI
Custom UI	-	Android Go
Launch Date
Launch Date	July 29, 2013 (Official)	March 14, 2019 (Official)
Operating System
Operating System	Android v4.2 (Jelly Bean)	Android v8.1 (Oreo)

Main Camera

Camera Features
Camera Features	-	Digital Zoom
Camera Setup
Camera Setup	-	Single
Flash
Flash	-	Yes, LED Flash
Image Resolution
Image Resolution	-	1600 x 1200 Pixels
OIS
OIS	-	No
Resolution
Resolution	-	2 MP, Primary Camera
Shooting Modes
Shooting Modes	-	High Dynamic Range mode (HDR) Burst mode

Multimedia

Audio Jack
Audio Jack	3.5 mm	3.5 mm
FM Radio
FM Radio	Yes, Recording option	Yes
Fm Radio
FM Radio	Yes, Recording option	-
Loudspeaker
Loudspeaker	Yes	Yes

Network & Connectivity

Bluetooth
Bluetooth	Yes	Yes, v4.2
GPS
GPS	Yes with A-GPS	Yes with A-GPS, Glonass
Network Support
Network Support	5G Not Supported in India, 3G, 2G	5G Not Supported in India, 4G Supported in India, 3G, 2G
SAR Value
SAR Value	Head: 1.6 W/kg	-
SIM 1
SIM 1	2G Bands: GSM 900 / 1800 GPRS: Available EDGE: Available	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
SIM 2
SIM 2	2G Bands: GSM 900 / 1800	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
SIM Size
SIM Size	-	SIM1: Nano, SIM2: Nano
SIM Slot(s)
SIM Slot(s)	Dual SIM	Dual SIM, GSM+GSM, Dual VoLTE
USB Connectivity
USB Connectivity	-	Mass storage device, USB charging, microUSB 2.0
VoLTE
VoLTE	-	Yes
Wi-Fi
Wi-Fi	Yes, Wi-Fi	Yes, Wi-Fi 4 (802.11 b/g/n)
Wi-Fi Features
Wi-Fi Features	Mobile Hotspot	Mobile Hotspot

Performance

CPU
CPU	Dual core, 1.2 GHz	Quad core, 1.4 GHz
Chipset
Chipset	MediaTek MT6572	-
Graphics
Graphics	Mali-400	-
Ram
RAM	256 MB	-

Sensors

Applications
Applications	Google Play Store, LAVA Zone, Local, MX Player, Wireless Input Device	-
Fingerprint Sensor
Fingerprint Sensor	-	No
Other Sensors
Other Sensors	Proximity sensor, Accelerometer	Accelerometer

Storage

Expandable Memory
Expandable Memory	Yes, Up to 32 GB	Yes, Up to 64 GB
Internal Memory
Internal Memory	512 MB	8 GB
User Available Storage
User Available Storage	Up to 20 GB	-