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BLU J4 vs Xiaomi Redmi Pro

Compare recorded specifications, size and practical differences.

+ Add a third phone

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

    J4:
    LCD
    Redmi Pro:
    OLED
  • Weight

    J4: 16 g lighter

    J4:
    158 g
    Redmi Pro:
    174 g
  • Width

    J4: 3.9 mm narrower

    J4:
    72.3 mm
    Redmi Pro:
    76.2 mm
  • Rear camera layout

    J4:
    Single
    Redmi Pro:
    Dual
  • Depth

    Redmi Pro: 1.8 mm thinner

    J4:
    10 mm
    Redmi Pro:
    8.2 mm
  • Release year

    J4:
    2019
    Redmi Pro:
    2016

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
    Width:
    72.3 mm
    Depth:
    10 mm +1.8 mm versus Redmi Pro
  2. 2. Redmi Pro

    Height:
    151.5 mm
    Width:
    76.2 mm +3.9 mm versus J4
    Depth:
    8.2 mm

Weight

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

  1. 1. J4

    158 g

  2. 2. Redmi Pro

    174 g

    +16 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. Redmi Pro

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

Redmi Pro has approximately 6.8% more rectangular screen area than J4.

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, Redmi Pro, compared at the same storage capacity.
StorageJ4Redmi Pro
32 GB 1 GB RAM Unknown
Redmi Pro: Original memory entry

128 GB · 4 GB RAM - Exclusive edition32/64 GB · 3 GB RAM - other editions

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. Redmi Pro

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (uses SIM 2 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. 1. J4

    2200 mAh

  2. 2. Redmi Pro

    4050 mAh

    +1850 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. Redmi Pro

Everyday essentials
Everyday essentials — specifications for J4, Redmi Pro.
SpecificationJ4Redmi Pro
Dimensions (HxWxD)
  • 151 Х 72.3 Х 10 mm
  • 151.5 Х 76.2 Х 8.2 mm
Weight
  • 158 g
  • 174 g
Technology
  • IPS LCD
  • AMOLED
Screen size
  • 5.5" inch
  • 5.5" 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
  • 128 GB
  • 4 GB RAM - Exclusive edition32/64 GB
  • 3 GB RAM - other editions
Memory card support
  • microSDXC
  • microSD
  • up to 256 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 2200 mAh
  • Removable Li-Po
  • 4050 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 8.1 Oreo (Go edition)
  • Android 6.0 (Marshmallow); MIUI 10
Chipset Unknown
  • Mediatek MT6797T Helio X25 (20 nm) High & Exclusive editions -Mediatek MT6797 Helio X20 (20 nm) Standard edition
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for J4, Redmi Pro.
SpecificationJ4Redmi Pro
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 78.1 cm2
  • 83.4 cm2
Screen format
  • 18:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 71.5%
  • 72.2%
PPI /points per inch/
  • 293 PPI
  • 401 PPI
Camera and Video
Camera and Video — specifications for J4, Redmi Pro.
SpecificationJ4Redmi Pro
Rear camera, main
  • 8 MP
  • Single
  • 13 MP
  • Dual
Camera specs
  • 8 MP
  • AF
  • 13 MP
  • f/2.0
  • PDAF -5 MP
  • depth sensor
Functions
  • LED flash
  • Dual-LED dual-tone flash
  • HDR
  • panorama
Video
  • 720p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 5 MP
  • Single
Specifications
  • 8 MP
  • 5 MP
  • f/2.0
Performance

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

Performance — specifications for J4, Redmi Pro.
SpecificationJ4Redmi Pro
Processor CPU
  • Quad-core 1.3 GHz Cortex-A7
  • Deca-core 2.5 GHz Exclusive edition -Deca-core 2.3 GHz High edition -Deca-core 2.1 GHz Standard edition
Graphics processor GPU
  • Mali-400
  • Mali-T880 MP4
GeekBench 4 Single Core * Unknown
  • 1648
GeekBench 4 Multi-Core * Unknown
  • 4014
GeekBench 4 RenderScript * Unknown
  • 3133
General specs
General specs — specifications for J4, Redmi Pro.
SpecificationJ4Redmi Pro
Release date
  • 2019
  • October
  • 2016
  • July
Colors
  • Blue
  • Black
  • Brown
  • Silver
  • Gold
  • Gray
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
  • 170 EUR
Body build Unknown
  • Front glass
  • aluminum body
Communication and Connectivity
Communication and Connectivity — specifications for J4, Redmi Pro.
SpecificationJ4Redmi Pro
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Hybrid Dual SIM (Nano-SIM/ Micro-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 / 1900 -3G - HSDPA 850 / 900 / 1900 / 2100 CDMA2000 1xEV-DO TD-SCDMA -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
  • LTE
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • 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
  • 4.2
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for J4, Redmi Pro.
SpecificationJ4Redmi Pro
Radio
  • FM radio
  • FM radio; recording
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for J4, Redmi Pro.
SpecificationJ4Redmi Pro
Dop
  • Sensors Accelerometer For USA
  • Sensors Fingerprint (front-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port