BLU J4 vs LG Q9

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.

  • Screen diagonal

    J4: 0.6 in smaller diagonal

    J4:
    5.5 in
    Q9:
    6.1 in
  • Depth

    Q9: 2.1 mm thinner

    J4:
    10 mm
    Q9:
    7.9 mm
  • Height

    J4: 2.2 mm shorter

    J4:
    151 mm
    Q9:
    153.2 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 +2.1 mm versus Q9
  2. 2. Q9

    Height:
    153.2 mm +2.2 mm versus J4
    Width:
    71.9 mm
    Depth:
    7.9 mm

Weight

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

  1. 1. J4

    158 g

  2. 2. Q9

    159 g

    +1 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. Q9

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

Q9 has approximately 17% 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, Q9, compared at the same storage capacity.
StorageJ4Q9
32 GB 1 GB RAM Unknown
Q9: Original memory entry

64 GB · 512GB 4GB

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. Q9

NFC:
Yes
Headphone jack:
Yes
Memory card support:
See details microSD · up to 1 TB

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. Q9

    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. Q9

Everyday essentials
Everyday essentials — specifications for J4, Q9.
SpecificationJ4Q9
Dimensions (HxWxD)
  • 151 Х 72.3 Х 10 mm
  • 153.2 Х 71.9 Х 7.9 mm
Weight
  • 158 g
  • 159 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 5.5" inch
  • 6.1" inch
Screen resolution
  • 720 x 1440 px
  • 1440 x 3120 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32GB 1GB RAM
  • 64 GB
  • 512GB 4GB
Memory card support
  • microSDXC
  • microSD
  • up to 1 TB
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 8.1 (Oreo)
Chipset Unknown
  • Qualcomm MSM8996 Snapdragon 821 (14 nm)
NFC Unknown
  • Yes
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for J4, Q9.
SpecificationJ4Q9
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 78.1 cm2
  • 91.0 cm2
Screen format
  • 18:9 (height:width)
  • 19.5:9 (height:width)
Screen to body ratio
  • 71.5%
  • 82.6%
PPI /points per inch/
  • 293 PPI
  • 564 PPI
Camera and Video
Camera and Video — specifications for J4, Q9.
SpecificationJ4Q9
Rear camera, main
  • 8 MP
  • Single
  • 16 MP
  • Single
Camera specs
  • 8 MP
  • AF
  • 16 MP
  • f/2.2
  • 28mm (wide)
  • PDAF
Functions
  • LED flash
  • HDR
Video
  • 720p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 8 MP
  • Single
Specifications
  • 8 MP
  • 8 MP
  • f/1.9
  • 26mm (wide)
Performance

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

Performance — specifications for J4, Q9.
SpecificationJ4Q9
Processor CPU
  • Quad-core 1.3 GHz Cortex-A7
  • Quad-core (2x2.15 GHz Kryo & 2x1.6 GHz Kryo)
Graphics processor GPU
  • Mali-400
  • Adreno 530
Antutu 7 score * Unknown
  • 165321
General specs
General specs — specifications for J4, Q9.
SpecificationJ4Q9
Release date
  • 2019
  • October
  • 2019
  • January
Colors
  • Blue
  • Black
  • Brown
  • Carmine Red
  • New Aurora Black
  • New Moroccan Blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
  • 400 EUR
Communication and Connectivity
Communication and Connectivity — specifications for J4, Q9.
SpecificationJ4Q9
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Single SIM (Nano-SIM)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 (dual-SIM model only) -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE
Speed
  • HSPA 21.1/5.76 Mbps
  • HSPA 42.2/5.76 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
  • DLNA
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • 3.1
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • 4.1
  • A2DP
  • LE
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for J4, Q9.
SpecificationJ4Q9
Radio
  • FM radio
  • FM radio
Others Unknown
  • Always-on display -HDR10
  • 32-bit/192kHz audio -DTS: X Surround Sound -Active noise cancellation with dedicated mic
Other features
Other features — specifications for J4, Q9.
SpecificationJ4Q9
Dop
  • Sensors Accelerometer For USA
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging (Quick Charge 3.0) - Fast battery charging 18W (Quick Charge 3.0) - IP68 dust/water proof (up to 1.5m for 30 mins) -MIL-STD-810G compliant