BLU J2 vs Xiaomi Mi Mix Alpha: specs comparison

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.

Display technology

OLED versus LCD

J2:

LCD

Mi Mix Alpha:

OLED
Weight

J2: 95 g lighter

J2:

146 g

Mi Mix Alpha:

241 g
Screen diagonal

J2: 2.92 in smaller diagonal

J2:

5 in

Mi Mix Alpha:

7.92 in
Rear camera layout

J2:

Single

Mi Mix Alpha:

Triple
Height

J2: 10.4 mm shorter

J2:

144 mm

Mi Mix Alpha:

154.4 mm

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. Mi Mix Alpha

Height:

154.4 mm +10.4 mm versus J2
Width:

72.3 mm
Depth:

10.4 mm

Weight

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

1. J2

146 g
2. Mi Mix Alpha

241 g

+95 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.

At least two phones need compatible screen dimensions for a drawing.

1. J2

Screen diagonal:

5 in

Aspect ratio (height:width):

16:9

Approximate rectangular screen area:

68.9 cm²
2. Mi Mix Alpha

Mi Mix Alpha: Screen geometry unavailable or conflicting.

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, Mi Mix Alpha, compared at the same storage capacity.
Storage	J2	Mi Mix Alpha
32 GB	1 GB RAM	Unknown

Mi Mix Alpha: Original memory entry

512GB 12GB RAM · UFS3.0

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. Mi Mix Alpha

NFC:: Unknown
Headphone jack:: No
Memory card support:: No

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. Mi Mix Alpha

4050 mAh

+2050 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. Mi Mix Alpha

Everyday essentials

Everyday essentials — specifications for J2, Mi Mix Alpha.
Specification	J2	Mi Mix Alpha
Dimensions (HxWxD)	144 Х 73.1 Х 10.3 mm	154.4 Х 72.3 Х 10.4 mm
Weight	146 g	241 g
Technology	IPS LCD	Flexible Super AMOLED
Screen size	5" inch	7.92" inch
Screen resolution	480 x 854 px	2088 x 2250 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	32GB 1GB RAM	512GB 12GB RAM UFS3.0
Memory card support	microSDXC	No
Battery Capacity is not battery life. No endurance test is implied.	2000 mAh Li-Po	4050 mAh Non-removable Li-Po
Operating system OS	Android 8.1 Oreo (Go edition)	Android 10
Chipset	Unknown	Qualcomm SM8150 Snapdragon 855+ (7 nm)
Headphone jack	Yes	No

Display

Display — specifications for J2, Mi Mix Alpha.
Specification	J2	Mi Mix Alpha
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	68.9 cm2	201.8 cm2
Screen format	16:9 (height:width)	Unknown
Screen to body ratio	65.4%	180.8%
PPI /points per inch/	196 PPI	388 PPI

Camera and Video

Camera and Video — specifications for J2, Mi Mix Alpha.
Specification	J2	Mi Mix Alpha
Rear camera, main	5 MP Single	108 MP Triple
Camera specs	5 MP	108 MP f/1.7 (wide) 1/1.33'' 0.8µm PDAF Laser AF -12 MP f/2.0 54mm (telephoto) 1/2.55'' 1.4µm dual pixel PDAF laser AF 2x optical zoom -20 MP f/2.2 13mm (ultrawide) 1/2.8'' 1.0µm
Functions	LED flash	Dual-LED flash HDR panorama
Video	720p@30fps	3240p@30fps 2160p@30/60fps 1080p@30/120/240fps 1080p@960fps
Front camera, selfie	5 MP Single	108 MP Triple
Specifications	5 MP	uses main camera

Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for J2, Mi Mix Alpha.
Specification	J2	Mi Mix Alpha
Processor CPU	Quad-core 1.3 GHz Cortex-A7	Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.8 GHz Kryo 485)
Graphics processor GPU	Mali-400	Adreno 640 (700 MHz)
Antutu 8 score *	Unknown	480830

General specs

General specs — specifications for J2, Mi Mix Alpha.
Specification	J2	Mi Mix Alpha
Release date	2019 December	2019 September
Colors	Blue Black Brown	Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	50 EUR	2500 EUR
Body build	Unknown	Glass front ceramic/glass back titanium alloy frame (TC4)

Communication and Connectivity

Communication and Connectivity — specifications for J2, Mi Mix Alpha.
Specification	J2	Mi Mix Alpha
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 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100) 2(1900) 3(1800) 4(1700/2100) 5(850) 7(2600) 8(900) 34(2000) 38(2600) 39(1900) 40(2300) 41(2500) - China -5G - 5G SA / NSA / Sub6 / mmWave; N41/N78/N79
Speed	HSPA 21.1/5.76 Mbps	HSPA 42.2/5.76 Mbps LTE-A (7CA) Cat20 2048/150 Mbps 5G (2+ Gbps DL)
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 Wi-Fi Direct DLNA hotspot
GPS	Yes with A-GPS	Yes with dual-band A-GPS GLONASS BDS GALILEO QZSS
USB	microUSB 2.0	Type-C 1.0 reversible connector
Bluetooth	4.1 A2DP LE	5.0 A2DP LE aptX HD

Music and Audio

Music and Audio — specifications for J2, Mi Mix Alpha.
Specification	J2	Mi Mix Alpha
Radio	FM radio	No
Others	Unknown	Active noise cancellation with dedicated mic

Other features

Other features — specifications for J2, Mi Mix Alpha.
Specification	J2	Mi Mix Alpha
Dop	Sensors Accelerometer For USA	Sensors Fingerprint (under display optical) accelerometer gyro proximity compass barometer - Fast battery charging 40W

BLU J2 vs Xiaomi Mi Mix Alpha

BLU J2

Xiaomi Mi Mix Alpha

Key differences

Display technology

Weight

Screen diagonal

Rear camera layout

Height

Physical size

1. J2

2. Mi Mix Alpha

Weight

1. J2

2. Mi Mix Alpha

Screen size

1. J2

2. Mi Mix Alpha

Memory variants

Practical features

1. J2

2. Mi Mix Alpha

Battery capacity

Recorded battery capacity

1. J2

2. Mi Mix Alpha

Specifications

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