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BLU J4 vs LG X4+

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.

  • Weight

    J4: 14.3 g lighter

    J4:
    158 g
    X4+:
    172.3 g
  • Width

    J4: 2.8 mm narrower

    J4:
    72.3 mm
    X4+:
    75.1 mm
  • Screen diagonal

    X4+: 0.2 in smaller diagonal

    J4:
    5.5 in
    X4+:
    5.3 in
  • Memory variants

    At 32 GB storage

    J4:
    1 GB RAM
    X4+:
    2 GB RAM
  • Depth

    X4+: 1.4 mm thinner

    J4:
    10 mm
    X4+:
    8.6 mm
  • Height

    X4+: 2.4 mm shorter

    J4:
    151 mm
    X4+:
    148.6 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 +2.4 mm versus X4+
    Width:
    72.3 mm
    Depth:
    10 mm +1.4 mm versus X4+
  2. 2. X4+

    Height:
    148.6 mm
    Width:
    75.1 mm +2.8 mm versus J4
    Depth:
    8.6 mm

Weight

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

  1. 1. J4

    158 g

  2. 2. X4+

    172.3 g

    +14.3 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. X4+

    Screen diagonal:
    5.3 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    77.4 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 J4, X4+, compared at the same storage capacity.
StorageJ4X4+
32 GB Recorded for all phones 1 GB RAM 2 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. J4

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

2. X4+

NFC:
Yes
Headphone jack:
Yes
Memory card support:
See details microSD · up to 512 GB

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. X4+

    3000 mAh

    +800 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. X4+

Everyday essentials
Everyday essentials — specifications for J4, X4+.
SpecificationJ4X4+
Dimensions (HxWxD)
  • 151 Х 72.3 Х 10 mm
  • 148.6 Х 75.1 Х 8.6 mm
Weight
  • 158 g
  • 172.3 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 5.5" inch
  • 5.3" inch
Screen resolution
  • 720 x 1440 px
  • 720 x 1280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32GB 1GB RAM
  • 32 GB
  • 2 GB RAM
Memory card support
  • microSDXC
  • microSD
  • up to 512 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 2200 mAh
  • Removable Li-Po
  • 3000 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 8.1 Oreo (Go edition)
  • Android 7.0 (Nougat)
Chipset Unknown
  • Qualcomm MSM8917 Snapdragon 425 (28 nm)
NFC Unknown
  • Yes
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for J4, X4+.
SpecificationJ4X4+
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 78.1 cm2
  • 77.4 cm2
Screen format
  • 18:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 71.5%
  • 69.4%
PPI /points per inch/
  • 293 PPI
  • 277 PPI
Camera and Video
Camera and Video — specifications for J4, X4+.
SpecificationJ4X4+
Rear camera, main
  • 8 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 8 MP
  • AF
  • 13 MP
  • f/2.2
  • 1/3''
  • 1.12µm
  • AF
Functions
  • LED flash
  • LED flash
  • HDR
Video
  • 720p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 5 MP
  • Single
Specifications
  • 8 MP
  • 5 MP
  • f/2.4
  • 1/5''
  • 1.12µm
Performance
Performance — specifications for J4, X4+.
SpecificationJ4X4+
Processor CPU
  • Quad-core 1.3 GHz Cortex-A7
  • Quad-core 1.4 GHz Cortex-A53
Graphics processor GPU
  • Mali-400
  • Adreno 308
General specs
General specs — specifications for J4, X4+.
SpecificationJ4X4+
Release date
  • 2019
  • October
  • 2018
  • January
Colors
  • Blue
  • Black
  • Brown
  • Lavender Violet
  • Moroccan Blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
  • 200 EUR
Communication and Connectivity
Communication and Connectivity — specifications for J4, X4+.
SpecificationJ4X4+
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
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 a/b/g/n
  • dual-band
  • WiFi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 4.1
  • A2DP
  • LE
  • 4.2
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for J4, X4+.
SpecificationJ4X4+
Radio
  • FM radio
  • FM radio
Others Unknown
  • 32-bit/192kHz audio -Active noise cancellation with dedicated mic
Other features
Other features — specifications for J4, X4+.
SpecificationJ4X4+
Dop
  • Sensors Accelerometer For USA
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass - MIL-STD-810G compliant - For Korea