BLU J4 vs BLU Life One X2

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: 8 g lighter

    J4:
    158 g
    Life One X2:
    166 g
  • Screen diagonal

    Life One X2: 0.3 in smaller diagonal

    J4:
    5.5 in
    Life One X2:
    5.2 in
  • Depth

    Life One X2: 0.5 mm thinner

    J4:
    10 mm
    Life One X2:
    9.5 mm
  • Height

    Life One X2: 3 mm shorter

    J4:
    151 mm
    Life One X2:
    148 mm
  • Release year

    J4:
    2019
    Life One X2:
    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 +3 mm versus Life One X2
    Width:
    72.3 mm
    Depth:
    10 mm +0.5 mm versus Life One X2
  2. 2. Life One X2

    Height:
    148 mm
    Width:
    72.4 mm
    Depth:
    9.5 mm

Weight

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

  1. 1. J4

    158 g

  2. 2. Life One X2

    166 g

    +8 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. Life One X2

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

J4 has approximately 4.7% more rectangular screen area than Life One X2.

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, Life One X2, compared at the same storage capacity.
StorageJ4Life One X2
32 GB 1 GB RAM Unknown
Life One X2: Original memory entry

64 GB · 4 GB RAM 16 GB · 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. Life One X2

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 64 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. Life One X2

    3150 mAh

    +950 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. Life One X2

Everyday essentials
Everyday essentials — specifications for J4, Life One X2.
SpecificationJ4Life One X2
Dimensions (HxWxD)
  • 151 Х 72.3 Х 10 mm
  • 148 Х 72.4 Х 9.5 mm
Weight
  • 158 g
  • 166 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 5.5" inch
  • 5.2" 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 GB
  • 4 GB RAM 16 GB
  • 2 GB RAM
Memory card support
  • microSDXC
  • microSD
  • up to 64 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 2200 mAh
  • Removable Li-Po
  • 3150 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 8.1 Oreo (Go edition)
  • Android 6.0.1 (Marshmallow)
Chipset Unknown
  • Qualcomm MSM8937 Snapdragon 430 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for J4, Life One X2.
SpecificationJ4Life One X2
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 78.1 cm2
  • 74.5 cm2
Screen format
  • 18:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 71.5%
  • 69.6%
PPI /points per inch/
  • 293 PPI
  • 424 PPI
Screen protection Unknown
  • Corning Gorilla Glass 3
Camera and Video
Camera and Video — specifications for J4, Life One X2.
SpecificationJ4Life One X2
Rear camera, main
  • 8 MP
  • Single
  • 16 MP
  • Single
Camera specs
  • 8 MP
  • AF
  • 16 MP
  • PDAF
  • f/2.0
Functions
  • LED flash
  • LED flash
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, Life One X2.
SpecificationJ4Life One X2
Processor CPU
  • Quad-core 1.3 GHz Cortex-A7
  • Octa-core 1.4 GHz Cortex-A53
Graphics processor GPU
  • Mali-400
  • Adreno 505
GeekBench 4 Single Core * Unknown
  • 645
GeekBench 4 Multi-Core * Unknown
  • 1995
GeekBench 4 RenderScript * Unknown
  • 2049
General specs
General specs — specifications for J4, Life One X2.
SpecificationJ4Life One X2
Release date
  • 2019
  • October
  • 2016
  • September
Colors
  • Blue
  • Black
  • Brown
  • Gray
  • Rose Gold
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
Unknown
Battery life Unknown
  • Stand by time- Up to 725 h (2G) / Up to 625 h (3G) Talking time- Up to 26 h (2G) / Up to 16 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for J4, Life One X2.
SpecificationJ4Life One X2
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Dual 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 -3G - HSDPA 850 / 1700(AWS) / 1900 / 2100 -4G - LTE band 2(1900)
  • 4(1700/2100)
  • 7(2600)
  • 12(700)
  • 17(700)
Speed
  • HSPA 21.1/5.76 Mbps
  • HSPA 42.2/11.5 Mbps
  • LTE Cat4 150/50 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
  • USB Host
Bluetooth
  • 4.1
  • A2DP
  • LE
  • 4.0
  • A2DP
Music and Audio
Music and Audio — specifications for J4, Life One X2.
SpecificationJ4Life One X2
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for J4, Life One X2.
SpecificationJ4Life One X2
Dop
  • Sensors Accelerometer For USA
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity