Boltt Evo vs Lava Z91 comparison

Show Only Differences Highlight Differences	Boltt Evo	Lava Z91
key specs
Display	6.79-inch	5.70-inch
Processor	Unisoc T7250	MediaTek MT6739
Front Camera	8-megapixel	8-megapixel
Rear Camera	50-megapixel + 2-megapixel	13-megapixel
RAM	4GB, 6GB	3GB
Storage	64GB, 128GB	32GB
Battery Capacity	6000mAh	3000mAh
OS	Android 16	Android 7.1 Nougat
Resolution	720x1640 pixels	720x1440 pixels
general
Brand	Fire-Boltt	Lava
Model	Boltt Evo	Z91
Release date	August 25, 2026	March 1, 2018
AI Enabled	Yes	-
Launched in India	Yes	-
Form factor	Touchscreen	Touchscreen
Body type	Polycarbonate	-
Dimensions (mm)	170.00 x 77.71 x 8.50	-
Weight (g)	233.00	-
Battery capacity (mAh)	6000	3000
Removable battery	No	-
Fast charging	Proprietary	-
Wireless charging	No	-
Colours	Arctic White, Berry Red, Lavender Bloom, Midnight Black, and Sky Blue	-
display
Refresh Rate	120 Hz	-
Resolution Standard	HD+	-
Screen size (inches)	6.79	5.70
Touchscreen	Yes	Yes
Resolution	720x1640 pixels	720x1440 pixels
hardware
Processor	octa-core	1.3GHz quad-core
Processor make	Unisoc T7250	MediaTek MT6739
RAM	4GB, 6GB	3GB
Internal storage	64GB, 128GB	32GB
Expandable storage	Yes	Yes
Expandable storage type	microSD	-
Expandable storage up to (GB)	1024	128
camera
Rear camera	50-megapixel + 2-megapixel	13-megapixel
No. of Rear Cameras	2	-
Rear autofocus	Yes	-
Rear flash	Yes	Yes
Front camera	8-megapixel	8-megapixel
No. of Front Cameras	1	-
Pop-Up Camera	No	-
Front autofocus	No	-
Front flash	No	Yes
software
Operating system	Android 16	Android 7.1 Nougat
Skin	-	Star OS 4.2
connectivity
Wi-Fi	Yes	-
GPS	Yes	-
Bluetooth	Yes, v 5.00	-
USB Type-C	Yes	-
Number of SIMs	2	2
Active 4G on both SIM cards	Yes	-
sim 1
SIM Type	Nano-SIM	-
GSM/CDMA	GSM + CDMA	-
4G/ LTE	Yes	-
sim 2
SIM Type	Nano-SIM	-
GSM/CDMA	GSM + CDMA	-
4G/ LTE	Yes	-
sensors
Compass/ Magnetometer	Yes	-
Proximity sensor	Yes	-
Accelerometer	Yes	-
Ambient light sensor	Yes	-

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