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BLU J4 vs Oppo A9

Compare recorded specifications, size and practical differences.

BLU J4

BLU J4

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Oppo A9

Oppo A9

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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.

  • WeightJ4: 32 g lighterJ4: 158 g · A9: 190 g
  • WidthJ4: 3.8 mm narrowerJ4: 72.3 mm · A9: 76.1 mm
  • Screen diagonalJ4: 1.03 in smaller diagonalJ4: 5.5 in · A9: 6.53 in
  • Rear camera layoutSingle / DualJ4: Single · A9: Dual
  • DepthA9: 1.7 mm thinnerA9: 8.3 mm · J4: 10 mm
  • HeightJ4: 11 mm shorterJ4: 151 mm · A9: 162 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.

Front
J4: 151 × 72.3 mm 1 A9: 162 × 76.1 mm 2
Side
J4: 151 × 10 mm 1 A9: 162 × 8.3 mm 2
  1. 1. J4
    Height
    151 mm
    Width
    72.3 mm
    Depth
    10 mm
    Weight
    158 g
  2. 2. A9
    Height
    162 mm
    Width
    76.1 mm
    Depth
    8.3 mm
    Weight
    190 g

Specifications

Open a section for more detail. Scroll inside a table to keep phone names visible; on narrow screens, swipe sideways or use the arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

Everyday essentials
Everyday essentials
SpecificationJ4A9
Dimensions (HxWxD)
  • 151 Х 72.3 Х 10 mm
  • 162 Х 76.1 Х 8.3 mm
Weight
  • 158 g
  • 190 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 5.5" inch
  • 6.53" inch
Screen resolution
  • 720 x 1440 px
  • 1080 x 2340 px
Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32GB 1GB RAM
  • 128 GB
  • 6 GB RAM
Memory card support
  • microSDXC
  • microSD
  • up to 256 GB
BatteryCapacity is not battery life. No endurance test is implied.
  • 2200 mAh
  • Removable Li-Po
  • 4020 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 8.1 Oreo (Go edition)
  • Android 9.0 (Pie); ColorOS 6
Chipset Unknown
  • Mediatek Helio P70 (12nm)
NFC Unknown
  • Yes
Headphone jack
  • Yes
  • Yes
Display
Display
SpecificationJ4A9
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 78.1 cm2
  • 104.7 cm2
Screen format
  • 18:9 (height:width)
  • 19.5:9 (height:width)
Screen to body ratio
  • 71.5%
  • 84.9%
PPI /points per inch/
  • 293 PPI
  • 395 PPI
Camera and Video
Camera and Video
SpecificationJ4A9
Rear camera, main
  • 8 MP
  • Single
  • 16 MP
  • Dual
Camera specs
  • 8 MP
  • AF
  • 16 MP
  • AF -2 MP
  • f/2.4
  • depth sensor
Functions
  • LED flash
  • HDR
Video
  • 720p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 16 MP
  • Single
Specifications
  • 8 MP
  • 16 MP
Performance
Performance
SpecificationJ4A9
Processor CPU
  • Quad-core 1.3 GHz Cortex-A7
  • Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
Graphics processor GPU
  • Mali-400
  • Mali-G72 MP3
Antutu 8 scoreLegacy recorded score. Test conditions are unspecified; no new testing is implied. Unknown
  • 175916
General specs
General specs
SpecificationJ4A9
Release date
  • 2019
  • October
  • 2019
  • April
Colors
  • Blue
  • Black
  • Brown
  • Mica Green
  • Ice Jade White
  • Fluorite Purple
Historical recorded priceLegacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
  • 250 EUR
Communication and Connectivity
Communication and Connectivity
SpecificationJ4A9
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-A
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
  • Yes
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
  • Yes
Music and Audio
Music and Audio
SpecificationJ4A9
Radio
  • FM radio
  • FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features
SpecificationJ4A9
Dop
  • Sensors Accelerometer For USA
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass

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