BLU J2 vs Xiaomi Redmi 4 Prime

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

    J2: 10 g lighter

    J2:
    146 g
    Redmi 4 Prime:
    156 g
  • Width

    Redmi 4 Prime: 3.5 mm narrower

    J2:
    73.1 mm
    Redmi 4 Prime:
    69.6 mm
  • Memory variants

    At 32 GB storage

    J2:
    1 GB RAM
    Redmi 4 Prime:
    3 GB RAM
  • Depth

    Redmi 4 Prime: 1.4 mm thinner

    J2:
    10.3 mm
    Redmi 4 Prime:
    8.9 mm
  • Height

    Redmi 4 Prime: 2.7 mm shorter

    J2:
    144 mm
    Redmi 4 Prime:
    141.3 mm
  • Release year

    J2:
    2019
    Redmi 4 Prime:
    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. J2

    Height:
    144 mm +2.7 mm versus Redmi 4 Prime
    Width:
    73.1 mm +3.5 mm versus Redmi 4 Prime
    Depth:
    10.3 mm +1.4 mm versus Redmi 4 Prime
  2. 2. Redmi 4 Prime

    Height:
    141.3 mm
    Width:
    69.6 mm
    Depth:
    8.9 mm

Weight

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

  1. 1. J2

    146 g

  2. 2. Redmi 4 Prime

    156 g

    +10 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. 1. J2

    Screen diagonal:
    5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    68.9 cm²
  2. 2. Redmi 4 Prime

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

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, Redmi 4 Prime, compared at the same storage capacity.
StorageJ2Redmi 4 Prime
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. Redmi 4 Prime

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. J2

    2000 mAh

  2. 2. Redmi 4 Prime

    4100 mAh

    +2100 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. Redmi 4 Prime

Everyday essentials
Everyday essentials — specifications for J2, Redmi 4 Prime.
SpecificationJ2Redmi 4 Prime
Dimensions (HxWxD)
  • 144 Х 73.1 Х 10.3 mm
  • 141.3 Х 69.6 Х 8.9 mm
Weight
  • 146 g
  • 156 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 5" inch
  • 5" inch
Screen resolution
  • 480 x 854 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
  • 32 GB
  • 3 GB RAM
Memory card support
  • microSDXC
  • microSD
  • up to 256 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 2000 mAh
  • Li-Po
  • 4100 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 8.1 Oreo (Go edition)
  • Android 6.0.1 (Marshmallow); MIUI 8
Chipset Unknown
  • Qualcomm MSM8953 Snapdragon 625 (14 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for J2, Redmi 4 Prime.
SpecificationJ2Redmi 4 Prime
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 68.9 cm2
  • 68.9 cm2
Screen format
  • 16:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 65.4%
  • 70.1%
PPI /points per inch/
  • 196 PPI
  • 441 PPI
Camera and Video
Camera and Video — specifications for J2, Redmi 4 Prime.
SpecificationJ2Redmi 4 Prime
Rear camera, main
  • 5 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 5 MP
  • 13 MP
  • PDAF
  • f/2.2
Functions
  • LED flash
  • Dual-LED dual-tone flash
  • HDR
  • panorama
Video
  • 720p@30fps
  • 1080p@30fps
Front camera, selfie
  • 5 MP
  • Single
  • 5 MP
  • Single
Specifications
  • 5 MP
  • 5 MP
  • f/2.2
Performance

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

Performance — specifications for J2, Redmi 4 Prime.
SpecificationJ2Redmi 4 Prime
Processor CPU
  • Quad-core 1.3 GHz Cortex-A7
  • Octa-core 2.0 GHz Cortex-A53
Graphics processor GPU
  • Mali-400
  • Adreno 506
GeekBench 4 Single Core * Unknown
  • 868
GeekBench 4 Multi-Core * Unknown
  • 3595
GeekBench 4 RenderScript * Unknown
  • 3118
GeekBench 5 Single Core * Unknown
  • 171
GeekBench 5 Multi-Core * Unknown
  • 903
General specs
General specs — specifications for J2, Redmi 4 Prime.
SpecificationJ2Redmi 4 Prime
Release date
  • 2019
  • December
  • 2016
  • November
Colors
  • Blue
  • Black
  • Brown
  • Gold
  • Dark Gray
  • Silver
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 50 EUR
  • 160 EUR
Body build Unknown
  • Front glass
  • aluminum body
Communication and Connectivity
Communication and Connectivity — specifications for J2, Redmi 4 Prime.
SpecificationJ2Redmi 4 Prime
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Hybrid Dual SIM
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)
  • 7(2600)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 21.1/5.76 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 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
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • microUSB 2.0
  • USB On-The-Go
Bluetooth
  • 4.1
  • A2DP
  • LE
  • 4.2
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for J2, Redmi 4 Prime.
SpecificationJ2Redmi 4 Prime
Radio
  • FM radio
  • FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for J2, Redmi 4 Prime.
SpecificationJ2Redmi 4 Prime
Dop
  • Sensors Accelerometer For USA
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - Fast battery charging