BLU J4 vs Xiaomi Mi 6

Compare recorded specifications, size and practical differences.

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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.

  • Weight

    J4: 10 g lighter

    J4:
    158 g
    Mi 6:
    168 g
  • Width

    Mi 6: 1.8 mm narrower

    J4:
    72.3 mm
    Mi 6:
    70.5 mm
  • Screen diagonal

    Mi 6: 0.35 in smaller diagonal

    J4:
    5.5 in
    Mi 6:
    5.15 in
  • Rear camera layout

    J4:
    Single
    Mi 6:
    Dual
  • Depth

    Mi 6: 2.5 mm thinner

    J4:
    10 mm
    Mi 6:
    7.5 mm
  • Height

    Mi 6: 5.8 mm shorter

    J4:
    151 mm
    Mi 6:
    145.2 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. 1. J4

    Height:
    151 mm +5.8 mm versus Mi 6
    Width:
    72.3 mm +1.8 mm versus Mi 6
    Depth:
    10 mm +2.5 mm versus Mi 6
  2. 2. Mi 6

    Height:
    145.2 mm
    Width:
    70.5 mm
    Depth:
    7.5 mm

Weight

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

  1. 1. J4

    158 g

  2. 2. Mi 6

    168 g

    +10 g versus J4

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. 1. J4

    Screen diagonal:
    5.5 in
    Aspect ratio (height:width):
    18:9
    Approximate rectangular screen area:
    78.1 cm²
  2. 2. Mi 6

    Screen diagonal:
    5.15 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    73.1 cm²

J4 has approximately 6.8% more rectangular screen area than Mi 6.

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 J4, Mi 6, compared at the same storage capacity.
StorageJ4Mi 6
32 GB 1 GB RAM Unknown
Mi 6: Original memory entry

64/128 GB · 6 GB RAM 64 GB · 512GB 4GB

Practical features

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

1. J4

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

2. Mi 6

NFC:
Yes
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. 1. J4

    2200 mAh

  2. 2. Mi 6

    3350 mAh

    +1150 mAh versus J4

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. J42. Mi 6

Everyday essentials
Everyday essentials — specifications for J4, Mi 6.
SpecificationJ4Mi 6
Dimensions (HxWxD)
  • 151 Х 72.3 Х 10 mm
  • 145.2 Х 70.5 Х 7.5 mm
Weight
  • 158 g
  • 168 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 5.5" inch
  • 5.15" inch
Screen resolution
  • 720 x 1440 px
  • 1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32GB 1GB RAM
  • 64/128 GB
  • 6 GB RAM 64 GB
  • 512GB 4GB
Memory card support
  • microSDXC
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 2200 mAh
  • Removable Li-Po
  • 3350 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 8.1 Oreo (Go edition)
  • Android 7.1.1 (Nougat); MIUI 8
Chipset Unknown
  • Qualcomm MSM8998 Snapdragon 835 (10 nm)
NFC Unknown
  • Yes
Headphone jack
  • Yes
  • No
Display
Display — specifications for J4, Mi 6.
SpecificationJ4Mi 6
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 78.1 cm2
  • 73.1 cm2
Screen format
  • 18:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 71.5%
  • 71.4%
PPI /points per inch/
  • 293 PPI
  • 428 PPI
Screen protection Unknown
  • Corning Gorilla Glass 4
Camera and Video
Camera and Video — specifications for J4, Mi 6.
SpecificationJ4Mi 6
Rear camera, main
  • 8 MP
  • Single
  • 12 MP
  • Dual
Camera specs
  • 8 MP
  • AF
  • 12 MP
  • f/1.8
  • 27mm (wide)
  • 1/2.9''
  • 1.25µm
  • 4-axis OIS
  • PDAF -12 MP
  • f/2.6
  • 52mm (telephoto)
  • 1.0µm
  • AF
  • 2x optical zoom
Functions
  • LED flash
  • Dual-LED dual-tone flash
  • HDR
  • panorama
Video
  • 720p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 8 MP
  • Single
Specifications
  • 8 MP
  • 8 MP
Performance

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

Performance — specifications for J4, Mi 6.
SpecificationJ4Mi 6
Processor CPU
  • Quad-core 1.3 GHz Cortex-A7
  • Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo)
Graphics processor GPU
  • Mali-400
  • Adreno 540
Antutu 7 score * Unknown
  • 205305
GeekBench 4 Single Core * Unknown
  • 1894
GeekBench 4 Multi-Core * Unknown
  • 6193
GeekBench 4 RenderScript * Unknown
  • 7657
Antutu 8 score * Unknown
  • 261141
GeekBench 4 Battery * Unknown
  • 3620
GeekBench 5 Single Core * Unknown
  • 368
GeekBench 5 Multi-Core * Unknown
  • 1463
General specs
General specs — specifications for J4, Mi 6.
SpecificationJ4Mi 6
Release date
  • 2019
  • October
  • 2017
  • April
Colors
  • Blue
  • Black
  • Brown
  • Ceramic Black
  • Black
  • Blue
  • White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
  • 330 EUR
Body build Unknown
  • Front/back glass
  • stainless steel frame
Communication and Connectivity
Communication and Connectivity — specifications for J4, Mi 6.
SpecificationJ4Mi 6
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 -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 21.1/5.76 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A (3CA) Cat9 450/50 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
  • Wi-Fi Direct
  • DLNA
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • Type-C 1.0 reversible connector
Bluetooth
  • 4.1
  • A2DP
  • LE
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for J4, Mi 6.
SpecificationJ4Mi 6
Radio
  • FM radio
  • No
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for J4, Mi 6.
SpecificationJ4Mi 6
Dop
  • Sensors Accelerometer For USA
  • Sensors Fingerprint (front-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • barometer
  • Infrared port - Fast battery charging (Quick Charge 3.0) - Splash resistant - For Global market