Asus ROG Phone 3 vs Samsung Galaxy J8

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.

  • Weight

    Galaxy J8: 63 g lighter

    ROG Phone 3:
    240 g
    Galaxy J8:
    177 g
  • Width

    Galaxy J8: 2.3 mm narrower

    ROG Phone 3:
    78 mm
    Galaxy J8:
    75.7 mm
  • Screen diagonal

    Galaxy J8: 0.59 in smaller diagonal

    ROG Phone 3:
    6.59 in
    Galaxy J8:
    6 in
  • Rear camera layout

    ROG Phone 3:
    Triple
    Galaxy J8:
    Dual
  • Depth

    Galaxy J8: 1.7 mm thinner

    ROG Phone 3:
    9.9 mm
    Galaxy J8:
    8.2 mm
  • Height

    Galaxy J8: 11.8 mm shorter

    ROG Phone 3:
    171 mm
    Galaxy J8:
    159.2 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. ROG Phone 3

    Height:
    171 mm +11.8 mm versus Galaxy J8
    Width:
    78 mm +2.3 mm versus Galaxy J8
    Depth:
    9.9 mm +1.7 mm versus Galaxy J8
  2. 2. Galaxy J8

    Height:
    159.2 mm
    Width:
    75.7 mm
    Depth:
    8.2 mm

Weight

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

  1. 1. ROG Phone 3

    240 g

    +63 g versus Galaxy J8

  2. 2. Galaxy J8

    177 g

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. ROG Phone 3

    Screen diagonal:
    6.59 in
    Aspect ratio (height:width):
    19.5:9
    Approximate rectangular screen area:
    106.6 cm²
  2. 2. Galaxy J8

    Screen diagonal:
    6 in
    Aspect ratio (height:width):
    18.5:9
    Approximate rectangular screen area:
    91.4 cm²

ROG Phone 3 has approximately 16.7% more rectangular screen area than Galaxy J8.

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 ROG Phone 3, Galaxy J8, compared at the same storage capacity.
StorageROG Phone 3Galaxy J8
128 GB 12 GB RAM Unknown
256 GB 12 GB RAM Unknown
512 GB 12 / 16 GB RAM Alternative RAM configurations Unknown
Galaxy J8: Original memory entry

64 GB · 4 GB RAM 32 GB · 3 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. ROG Phone 3

NFC:
Yes
Headphone jack:
No
Memory card support:
No

2. Galaxy J8

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. ROG Phone 3

    6000 mAh

    +2500 mAh versus Galaxy J8

  2. 2. Galaxy J8

    3500 mAh

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. ROG Phone 32. Galaxy J8

Everyday essentials
Everyday essentials — specifications for ROG Phone 3, Galaxy J8.
SpecificationROG Phone 3Galaxy J8
Dimensions (HxWxD)
  • 171 Х 78 Х 9.9 mm
  • 159.2 Х 75.7 Х 8.2 mm
Weight
  • 240 g
  • 177 g
Technology
  • AMOLED
  • Super AMOLED
Screen size
  • 6.59" inc
  • 6" inch
Screen resolution
  • 1080 x 2340 px
  • 720 x 1480 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128GB 12GB RAM
  • 256GB 12GB RAM
  • 512GB 12GB RAM
  • 512GB 16GB RAM
  • 64 GB
  • 4 GB RAM 32 GB
  • 3 GB RAM
Memory card support
  • No
  • microSD
  • up to 256 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 6000 mAh
  • Non-removable Li-Po
  • 3500 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 10
  • ROG UI
  • Android 8.0 (Oreo)
Chipset
  • - Qualcomm SM8250 Snapdragon 865+ (7 nm+)
  • Qualcomm SDM450 Snapdragon 450 (14 nm)
NFC
  • Yes
Unknown
Headphone jack
  • No
  • Yes
Display
Display — specifications for ROG Phone 3, Galaxy J8.
SpecificationROG Phone 3Galaxy J8
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 1B
  • 16M
Screen area
  • 106.6 cm2
  • 91.4 cm2
Screen format
  • 19.5:9 (height:width)
  • 18.5:9 (height:width)
Screen to body ratio
  • 79.9%
  • 75.8%
PPI /points per inch/ Unknown
  • 274 PPI
Screen protection
  • Corning Gorilla Glass 6
Unknown
Camera and Video
Camera and Video — specifications for ROG Phone 3, Galaxy J8.
SpecificationROG Phone 3Galaxy J8
Rear camera, main
  • 64 MP
  • Triple
  • 16 MP
  • Dual
Camera specs
  • -64 MP
  • f/1.8
  • (wide)
  • 1/1.72''
  • 0.8µm
  • PDAF -13 MP
  • f/2.4
  • 125˚
  • 11mm (ultrawide) -5 MP
  • f/2.0
  • (macro)
  • 16 MP
  • f/1.7
  • AF -5 MP
  • f/1.9
  • depth sensor
Functions
  • panorama
  • HDR
  • LED flash
Video
  • 8K@30fps
  • 4K@30/60/120fps
  • 1080p@30/60/240fps
  • 720p@480fps; gyro-EIS
  • 1080p@30fps
Front camera, selfie
  • 24 MP
  • Single
  • 16 MP
  • Single
Specifications
  • 24 MP
  • f/2.0
  • 27mm (wide)
  • 0.9μm
  • 16 MP
  • f/1.9
Performance

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

Performance — specifications for ROG Phone 3, Galaxy J8.
SpecificationROG Phone 3Galaxy J8
Processor CPU
  • - Octa-core (1x3.1 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.8 GHz Kryo 585)
  • Octa-core 1.6 GHz Cortex-A53
Graphics processor GPU
  • - Adreno 650
  • Adreno 506
Antutu 7 score * Unknown
  • 57202
Antutu 8 score *
  • 632274
Unknown
General specs
General specs — specifications for ROG Phone 3, Galaxy J8.
SpecificationROG Phone 3Galaxy J8
Release date
  • 2020
  • July 22
  • 2018
  • May
Colors
  • Black
  • Black
  • Gold
  • Blue
  • Purple
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 1000 EUR
  • 250 EUR
Battery life Unknown
  • Talking time- Up to 23 h (3G) Music play - Up to 112 h
Body build
  • Glass front (Gorilla Glass 6)
  • glass back (Gorilla Glass)
  • aluminum frame
  • plastic body
Communication and Connectivity
Communication and Connectivity — specifications for ROG Phone 3, Galaxy J8.
SpecificationROG Phone 3Galaxy J8
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 2CDMA 800 & TD-SCDMA -3G - HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100 - A versionHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - B version -4G - 1
  • 2
  • 3
  • 4
  • 5
  • 7
  • 8
  • 12
  • 13
  • 17
  • 18
  • 19
  • 20
  • 25
  • 26
  • 28
  • 29
  • 30
  • 32
  • 34
  • 38
  • 39
  • 40
  • 41
  • 42
  • 48
  • 66
  • 71 - A version -5G - 1
  • 71
  • 77
  • 78
  • 79 SA/NSA - A version 41
  • 79 SA/NSA - B version
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100)
  • 2(1900)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 12(700)
  • 17(700)
  • 20(800)
  • 28(700)
  • 38(2600)
  • 40(2300)
  • 41(2500)
  • 66(1700/2100) - J810Y/DS
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE-A (6CA) Cat20 2000/150 Mbps
  • 5G 4.4 Gbps DL
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac/6
  • dual-band
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with dual-band A-GPS
  • GLONASS
  • BDS
  • GALILEO
  • QZSS
  • GNSS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • Two (side 3.1
  • bottom 2.0) Type-C 1.0 reversible connector; accessory connector
  • microUSB 2.0
  • USB On-The-Go
Bluetooth
  • 5.1
  • A2DP
  • LE
  • aptX HD
  • aptX Adaptive
  • 4.2
  • A2DP
  • LE
Harmful irradiation Unknown
  • SAR EU - 0.57 W/kg (head) 1.18 W/kg (body)
Music and Audio
Music and Audio — specifications for ROG Phone 3, Galaxy J8.
SpecificationROG Phone 3Galaxy J8
Radio Unknown
  • FM radio
  • recording
Others
  • - HDR10+ -144Hz refresh rate -650 nits max. brightness
  • - 24-bit/192kHz audio
Unknown
Other features
Other features — specifications for ROG Phone 3, Galaxy J8.
SpecificationROG Phone 3Galaxy J8
Dop
  • - Sensors - Fingerprint (under display
  • optical)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast charging 30W -Quick Charge 4.0
  • 3.0 -Reverse charging 10W - RGB light panel -Pressure sensitive zones
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity - Versions: J810F/DS (Global DS); J810G/DS (India); J810Y/DS (Asia) Also known as Samsung Galaxy On8 in India