Lava Iris X1 Atom S vs Lava Z1s

Key Specs

Battery
Battery	1400 mAh	3100 mAh
Display
Display	4.0 inches (10.16 cm)	5.0 inches (12.7 cm)
Front Camera
Front Camera	0.3 MP	2 MP
RAM
RAM	512 MB	2 GB
Rear Camera
Rear Camera	5 MP	5 MP

Battery

Capacity
Capacity	1400 mAh	3100 mAh
Removable
Removable	-	Yes
Standby time
Standby Time	-	Up to 475 Hours(2G)
TalkTime
TalkTime	Up to 6 Hours(3G) / Up to 14 Hours(2G)	Up to 36 Hours(4G)
Type
Type	Li-ion	Li-ion
USB Type-C
USB Type-C	-	No

Design

Colours
Colours	Black, White	Blue, Cyan
Height
Height	63.4 mm	146.5 mm
Thickness
Thickness	9.6 mm	10.4 mm
Weight
Weight	112 grams	187 grams
Width
Width	25.5 mm	73 mm

Display

Display Type
Display Type	TFT	IPS LCD
Pixel Density
Pixel Density	233 ppi	351 ppi
Resolution
Resolution	480x800 px	720x1600 px (HD+)
Screen Size
Screen Size	4.0 inches (10.16 cm)	5.0 inches (12.7 cm)
Screen to Body Ratio (calculated)
Screen to Body Ratio (calculated)	281.69 %	56.44 %
Touch Screen
Touch Screen	Yes, Capacitive Touchscreen, Multi-touch	Yes, Capacitive Touchscreen, Multi-touch

Front Camera

Resolution
Resolution	0.3 MP, Primary Camera	2 MP, Primary Camera

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General

Brand
Brand	Lava	Lava
Launch Date
Launch Date	June 22, 2015 (Official)	January 6, 2022 (Official)
Operating System
Operating System	Android v4.4 (Kitkat)	Android v11

Main Camera

Autofocus
Autofocus	No	-
Camera Features
Camera Features	Digital Zoom	Digital Zoom
Camera Setup
Camera Setup	Single	Single
Flash
Flash	Yes, LED Flash	Yes, LED Flash
Image Resolution
Image Resolution	2592 x 1944 Pixels	2592 x 1944 Pixels
OIS
OIS	No	-
Resolution
Resolution	5 MP, Primary Camera	5 MP, Primary Camera(1.12" sensor size)
Shooting Modes
Shooting Modes	High Dynamic Range mode (HDR)	High Dynamic Range mode (HDR)
Video Recording
Video Recording	-	1280x720 fps

Multimedia

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

Network & Connectivity

Bluetooth
Bluetooth	Yes	Yes, v4.2
GPS
GPS	Yes with A-GPS	Yes with A-GPS
Network Support
Network Support	5G Not Supported in India, 3G, 2G	5G Not Supported in India, 4G Supported in India, 3G, 2G
SIM 1
SIM 1	3G Bands: UMTS 2100 MHz 2G Bands: GSM 1800 / 900 MHz GPRS: Available EDGE: Available	4G Bands: TD-LTE 2300(band 40) FD-LTE 1800(band 3) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available
SIM 2
SIM 2	2G Bands: GSM 1800 / 900 MHz	4G Bands: TD-LTE 2300(band 40) FD-LTE 1800(band 3) 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
SIM Slot(s)
SIM Slot(s)	Dual SIM, GSM+GSM	Dual SIM, GSM+GSM
USB Connectivity
USB Connectivity	microUSB 2.0	Mass storage device, USB charging, microUSB
VoLTE
VoLTE	-	Yes
Wi-Fi
Wi-Fi	Yes, Wi-Fi 4 (802.11 b/g/n)	Yes, Wi-Fi 5 (802.11 b/g/n/ac)
Wi-Fi Features
Wi-Fi Features	-	Mobile Hotspot

Performance

CPU
CPU	Single core, 1 GHz	Octa core, 1.6 GHz

Sensors

Fingerprint Sensor
Fingerprint Sensor	-	No
Other Sensors
Other Sensors	Accelerometer	Light sensor, Proximity sensor, Accelerometer

Storage

Expandable Memory
Expandable Memory	Yes, Up to 32 GB	Yes, Up to 256 GB
Internal Memory
Internal Memory	8 GB	16 GB
USB OTG
USB OTG	-	Yes