BLU J4 vs Oppo Realme XT

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.

  • Display technology

    OLED versus LCD

    J4:
    LCD
    Realme XT:
    OLED
  • Weight

    J4: 25 g lighter

    J4:
    158 g
    Realme XT:
    183 g
  • Width

    J4: 2.9 mm narrower

    J4:
    72.3 mm
    Realme XT:
    75.2 mm
  • Screen diagonal

    J4: 0.9 in smaller diagonal

    J4:
    5.5 in
    Realme XT:
    6.4 in
  • Rear camera layout

    J4:
    Single
    Realme XT:
    Quad
  • Depth

    Realme XT: 1.4 mm thinner

    J4:
    10 mm
    Realme XT:
    8.6 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
    Width:
    72.3 mm
    Depth:
    10 mm +1.4 mm versus Realme XT
  2. 2. Realme XT

    Height:
    158.7 mm +7.7 mm versus J4
    Width:
    75.2 mm +2.9 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. Realme XT

    183 g

    +25 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. Realme XT

    Screen diagonal:
    6.4 in
    Aspect ratio (height:width):
    19.5:9
    Approximate rectangular screen area:
    100.5 cm²

Realme XT has approximately 28.8% 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, Realme XT, compared at the same storage capacity.
StorageJ4Realme XT
32 GB 1 GB RAM Unknown
Realme XT: Original memory entry

64GB 4GB RAM · 1128GB 6GB RAM · 128GB 8GB RAM · UFS2.1

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. Realme XT

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (dedicated 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. Realme XT

    4000 mAh

    +1800 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. Realme XT

Everyday essentials
Everyday essentials — specifications for J4, Realme XT.
SpecificationJ4Realme XT
Dimensions (HxWxD)
  • 151 Х 72.3 Х 10 mm
  • 158.7 Х 75.2 Х 8.6 mm
Weight
  • 158 g
  • 183 g
Technology
  • IPS LCD
  • Super AMOLED
Screen size
  • 5.5" inch
  • 6.4" inch
Screen resolution
  • 720 x 1440 px
  • 1080 x 2340 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32GB 1GB RAM
  • 64GB 4GB RAM
  • 1128GB 6GB RAM
  • 128GB 8GB RAM
  • UFS2.1
Memory card support
  • microSDXC
  • microSD
  • up to 256 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 2200 mAh
  • Removable Li-Po
  • 4000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 8.1 Oreo (Go edition)
  • Android 9.0 (Pie)
  • planned upgrade to Android 10.0; ColorOS 6
Chipset Unknown
  • Qualcomm SDM712 Snapdragon 712 (10 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for J4, Realme XT.
SpecificationJ4Realme XT
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 78.1 cm2
  • 101.0 cm2
Screen format
  • 18:9 (height:width)
  • 19.5:9 (height:width)
Screen to body ratio
  • 71.5%
  • 84.7%
PPI /points per inch/
  • 293 PPI
  • 402 PPI
Screen protection Unknown
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for J4, Realme XT.
SpecificationJ4Realme XT
Rear camera, main
  • 8 MP
  • Single
  • 64 MP
  • Quad
Camera specs
  • 8 MP
  • AF
  • 64 MP
  • f/1.8
  • (wide)
  • 1/1.7''
  • 0.8µm
  • PDAF -8 MP
  • f/2.3
  • 13mm (ultrawide)
  • 1/4''
  • 1.12µm -2 MP
  • f/2.4
  • 1/5''
  • 1.75µm (dedicated macro camera) -2 MP
  • 1.75µm
  • depth sensor
Functions
  • LED flash
  • HDR
  • panorama
Video
  • 720p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 16 MP
  • Single
Specifications
  • 8 MP
  • 16 MP
  • f/2.0
  • 25mm (wide)
  • 1/3"
  • 1.0µm
Performance

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

Performance — specifications for J4, Realme XT.
SpecificationJ4Realme XT
Processor CPU
  • Quad-core 1.3 GHz Cortex-A7
  • Octa-core (2x2.3 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver)
Graphics processor GPU
  • Mali-400
  • Adreno 616
Antutu 7 score * Unknown
  • 221589
Antutu 8 score * Unknown
  • 228834
GeekBench 5 Single Core * Unknown
  • 333
GeekBench 5 Multi-Core * Unknown
  • 1471
General specs
General specs — specifications for J4, Realme XT.
SpecificationJ4Realme XT
Release date
  • 2019
  • October
  • 2019
  • September
Colors
  • Blue
  • Black
  • Brown
  • Pearl White
  • Pearl Blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
  • 200 EUR
Body build Unknown
  • Front/back glass (Gorilla Glass 5)
  • plastic frame
Communication and Connectivity
Communication and Connectivity — specifications for J4, Realme XT.
SpecificationJ4Realme XT
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 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 8(900)
  • 38(2600)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 21.1/5.76 Mbps
  • HSPA 42.2/11.5 Mbps
  • LTE-A
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
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • BDS
USB
  • microUSB 2.0
  • 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, Realme XT.
SpecificationJ4Realme XT
Radio
  • FM radio
  • FM radio
Others Unknown
  • Dolby Atmos
Other features
Other features — specifications for J4, Realme XT.
SpecificationJ4Realme XT
Dop
  • Sensors Accelerometer For USA
  • Sensors Fingerprint (under display
  • optical)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging 20W (VOOC Flash Charge 3.0)