BLU J2 vs Lava Z91

Compare recorded specifications, size and practical differences.

BLU J2

Replace J2

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Lava Z91

Replace Z91

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Key differences

Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

Screen diagonal

J2: 0.7 in smaller diagonal

J2:

5 in

Z91:

5.7 in
Memory variants

At 32 GB storage

J2:

1 GB RAM

Z91:

3 GB RAM
Depth

Z91: 2.6 mm thinner

J2:

10.3 mm

Z91:

7.7 mm
Height

J2: 8 mm shorter

J2:

144 mm

Z91:

152 mm
Release year

J2:

2019

Z91:

2018

Physical size

Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

1. J2

Height:

144 mm
Width:

73.1 mm
Depth:

10.3 mm +2.6 mm versus Z91
2. Z91

Height:

152 mm +8 mm versus J2
Width:

72.9 mm
Depth:

7.7 mm

Weight

Bars start at zero and share a scale within this chart.

1. J2

146 g
2. Z91

147 g

+1 g versus J2

Screen size

Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

1. J2

Screen diagonal:

5 in

Aspect ratio (height:width):

16:9

Approximate rectangular screen area:

68.9 cm²
2. Z91

Screen diagonal:

5.7 in

Aspect ratio (height:width):

18:9

Approximate rectangular screen area:

83.8 cm²

Z91 has approximately 21.7% more rectangular screen area than J2.

Memory variants

Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

Recorded RAM for J2, Z91, compared at the same storage capacity.
Storage	J2	Z91
32 GB Recorded for all phones	1 GB RAM	3 GB RAM

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. J2

NFC:: Unknown
Headphone jack:: Yes
Memory card support:: See details microSDXC

2. Z91

NFC:: Unknown
Headphone jack:: Yes
Memory card support:: See details microSD · up to 128 GB (dedicated slot)

Battery capacity

Capacity is not battery life. No endurance test is implied.

Recorded battery capacity

Bars start at zero and share a scale within this chart.

1. J2

2000 mAh
2. Z91

3000 mAh

+1000 mAh versus J2

Specifications

Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

1. J22. Z91

Everyday essentials

Everyday essentials — specifications for J2, Z91.
Specification	J2	Z91
Dimensions (HxWxD)	144 Х 73.1 Х 10.3 mm	152 Х 72.9 Х 7.7 mm
Weight	146 g	147 g
Technology	IPS LCD	IPS LCD
Screen size	5" inch	5.7" inch
Screen resolution	480 x 854 px	720 x 1440 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	32GB 1GB RAM	32 GB 3 GB RAM
Memory card support	microSDXC	microSD up to 128 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.	2000 mAh Li-Po	3000 mAh Non-removable Li-Po
Operating system OS	Android 8.1 Oreo (Go edition)	Android 7.1 (Nougat)
Chipset	Unknown	Mediatek MT6739 (28 nm)
Headphone jack	Yes	Yes

Display

Display — specifications for J2, Z91.
Specification	J2	Z91
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	68.9 cm2	83.8 cm2
Screen format	16:9 (height:width)	18:9 (height:width)
Screen to body ratio	65.4%	75.7%
PPI /points per inch/	196 PPI	282 PPI

Camera and Video

Camera and Video — specifications for J2, Z91.
Specification	J2	Z91
Rear camera, main	5 MP Single	13 MP Single
Camera specs	5 MP	13 MP f/2.0 1.12µm AF
Functions	LED flash	LED flash
Video	720p@30fps	1080p@30fps
Front camera, selfie	5 MP Single	8 MP Single
Specifications	5 MP	8 MP f/2.2

Performance

Performance — specifications for J2, Z91.
Specification	J2	Z91
Processor CPU	Quad-core 1.3 GHz Cortex-A7	Quad-core 1.3 GHz Cortex-A53
Graphics processor GPU	Mali-400	PowerVR GE8100
Antutu 7 score Legacy recorded score. Test conditions are unspecified; no new testing is implied.	Unknown	35722

General specs

General specs — specifications for J2, Z91.
Specification	J2	Z91
Release date	2019 December	2018 March
Colors	Blue Black Brown	Blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	50 EUR	10000 INR

Communication and Connectivity

Communication and Connectivity — specifications for J2, Z91.
Specification	J2	Z91
SIM card	Dual SIM (Nano-SIM dual stand-by)	Dual SIM (Nano-SIM dual stand-by)
Network	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2 -3G - HSDPA 900 / 2100 -4G - LTE band 1(2100) 3(1800) 5(850) 40(2300) 41(2500)
Speed	HSPA 21.1/5.76 Mbps	HSPA 42.2/5.76 Mbps LTE Cat4 150/50 Mbps
GPRS	Yes	Yes
Edge	Yes	Yes
Wi-Fi	Wi-Fi 802.11 b/g/n Wi-Fi Direct hotspot	Wi-Fi 802.11 a/b/g/n/ac dual-band WiFi Direct hotspot
GPS	Yes with A-GPS	Yes with A-GPS
USB	microUSB 2.0	microUSB 2.0 USB On-The-Go
Bluetooth	4.1 A2DP LE	4.0 A2DP

Music and Audio

Music and Audio — specifications for J2, Z91.
Specification	J2	Z91
Radio	FM radio	FM radio

Other features

Other features — specifications for J2, Z91.
Specification	J2	Z91
Dop	Sensors Accelerometer For USA	Sensors Fingerprint (rear-mounted) accelerometer proximity - For India

BLU J2 vs Lava Z91

BLU J2

Lava Z91

Key differences

Screen diagonal

Memory variants

Depth

Height

Release year

Physical size

1. J2

2. Z91

Weight

1. J2

2. Z91

Screen size

1. J2

2. Z91

Memory variants

Practical features

1. J2

2. Z91

Battery capacity

Recorded battery capacity

1. J2

2. Z91

Specifications

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