Samsung Galaxy A8 (2018) vs T-Mobile Comet

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

    Comet: 69.9 g lighter

    Galaxy A8 (2018):
    172 g
    Comet:
    102.1 g
  • Width

    Comet: 14.7 mm narrower

    Galaxy A8 (2018):
    70.6 mm
    Comet:
    55.9 mm
  • Screen diagonal

    Comet: 2.8 in smaller diagonal

    Galaxy A8 (2018):
    5.6 in
    Comet:
    2.8 in
  • Chipset

    Galaxy A8 (2018):
    Exynos 7885 Octa (14 nm)
    Comet:
    Qualcomm MSM7225 Snapdragon S1
  • Depth

    Galaxy A8 (2018): 4.3 mm thinner

    Galaxy A8 (2018):
    8.4 mm
    Comet:
    12.7 mm
  • Height

    Comet: 45.1 mm shorter

    Galaxy A8 (2018):
    149.2 mm
    Comet:
    104.1 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. Galaxy A8 (2018)

    Height:
    149.2 mm +45.1 mm versus Comet
    Width:
    70.6 mm +14.7 mm versus Comet
    Depth:
    8.4 mm
  2. 2. Comet

    Height:
    104.1 mm
    Width:
    55.9 mm
    Depth:
    12.7 mm +4.3 mm versus Galaxy A8 (2018)

Weight

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

  1. 1. Galaxy A8 (2018)

    172 g

    +69.9 g versus Comet

  2. 2. Comet

    102.1 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. Galaxy A8 (2018)

    Screen diagonal:
    5.6 in
    Aspect ratio (height:width):
    18.5:9
    Approximate rectangular screen area:
    79.6 cm²
  2. 2. Comet

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²

Galaxy A8 (2018) has approximately 227.8% more rectangular screen area than Comet.

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.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

Galaxy A8 (2018): Original memory entry

32/64 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. Galaxy A8 (2018)

NFC:
Yes
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (dedicated slot)

2. Comet

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB (dedicated slot) · 2 GB included

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. Galaxy A8 (2018)

    3000 mAh

    +1800 mAh versus Comet

  2. 2. Comet

    1200 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. Galaxy A8 (2018)2. Comet

Everyday essentials
Everyday essentials — specifications for Galaxy A8 (2018), Comet.
SpecificationGalaxy A8 (2018)Comet
Dimensions (HxWxD)
  • 149.2 Х 70.6 Х 8.4 mm
  • 104.1 Х 55.9 Х 12.7 mm
Weight
  • 172 g
  • 102.1 g
Technology
  • Super AMOLED
  • TFT
Screen size
  • 5.6" inch
  • 2.8" inch
Screen resolution
  • 1080 x 2220 px
  • 240 x 320 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32/64 GB
  • 512GB 4GB
Unknown
Memory card support
  • microSD
  • up to 256 GB (dedicated slot)
  • microSD
  • up to 32 GB (dedicated slot)
  • 2 GB included
Battery Capacity is not battery life. No endurance test is implied.
  • 3000 mAh
  • Non-removable Li-Ion
  • 1200 mAh
  • Removable Li-Ion
Operating system OS
  • Android 7.1.1 (Nougat)
  • upgradable to Android 8.0 (Oreo)
  • Android 2.2 (Froyo)
Chipset
  • Exynos 7885 Octa (14 nm)
  • Qualcomm MSM7225 Snapdragon S1
NFC
  • Yes
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Galaxy A8 (2018), Comet.
SpecificationGalaxy A8 (2018)Comet
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 256K
Screen area
  • 79.6 cm2
  • 24.3 cm2
Screen format
  • 18.5:9 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 75.6%
  • 41.7%
PPI /points per inch/
  • 441 PPI
  • 143 PPI
Screen protection
  • Corning Gorilla Glass (unspecified version)
Unknown
Camera and Video
Camera and Video — specifications for Galaxy A8 (2018), Comet.
SpecificationGalaxy A8 (2018)Comet
Rear camera, main
  • 16 MP
  • Single
  • 3.15 MP
  • Single
Camera specs
  • 16 MP
  • f/1.7
  • 26mm (wide)
  • 1/2.8”
  • 1.12µm
  • PDAF
  • 3.15 MP
Functions
  • LED flash
  • panorama
  • HDR
Unknown
Video
  • 1080p@30fps
  • CIF
Front camera, selfie
  • 16 MP
  • Dual
  • 0 MP,
Specifications
  • 16 MP
  • f/1.9
  • 27mm (wide)
  • 1/3.1''
  • 1.0µm 8 MP
  • 24mm (wide)
  • 1/4''
  • 1.12µm
Unknown
Performance

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

Performance — specifications for Galaxy A8 (2018), Comet.
SpecificationGalaxy A8 (2018)Comet
Processor CPU
  • Octa-core (2x2.2 GHz Cortex-A73 & 6x1.6 GHz Cortex-A53)
  • 528 MHz ARM 11
Graphics processor GPU
  • Mali-G71
  • No
Antutu 7 score *
  • 116745
Unknown
GeekBench 4 Single Core *
  • 1482
Unknown
GeekBench 4 Multi-Core *
  • 4208
Unknown
GeekBench 4 RenderScript *
  • 3704
Unknown
Antutu 8 score *
  • 142851
Unknown
GeekBench 5 Single Core *
  • 309
Unknown
GeekBench 5 Multi-Core *
  • 994
Unknown
General specs
General specs — specifications for Galaxy A8 (2018), Comet.
SpecificationGalaxy A8 (2018)Comet
Release date
  • 2017
  • December
  • 2010
  • November
Colors
  • Black
  • orchid grey
  • Gold
  • Blue
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 270 EUR
  • 150 EUR
Battery life
  • Talking time- Up to 24 h (3G) Music play - Up to 66 h
  • Stand by time- Up to 288 h Talking time- Up to 9 h
Body build
  • Front/back glass
  • aluminum frame
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Galaxy A8 (2018), Comet.
SpecificationGalaxy A8 (2018)Comet
SIM card
  • Single SIM (Nano-SIM)Dual SIM (Nano-SIM
  • dual stand-by)
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) -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)
  • 13(700)
  • 17(700)
  • 18(800)
  • 19(800)
  • 20(800)
  • 26(850)
  • 28(700)
  • 38(2600)
  • 40(2300)
  • 41(2500)
  • 66(1700/2100)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE-A (3CA) Cat11 600/75 Mbps
  • HSPA 7.2/0.384 Mbps
GPRS
  • Yes
  • Class 10
Edge
  • Yes
  • Class 10
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
  • Yes
  • with A-GPS
USB
  • 2.0
  • Type-C 1.0 reversible connector
  • microUSB 2.0
Bluetooth
  • 5.0
  • A2DP
  • EDR
  • LE
  • 2.0
  • A2DP
Harmful irradiation
  • SAR EU - 0.24 W/kg (head) 1.25 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for Galaxy A8 (2018), Comet.
SpecificationGalaxy A8 (2018)Comet
Radio
  • FM radio
  • FM radio
Others
  • Always-on display
  • 24-bit/192kHz audio -Active noise cancellation with dedicated mic
Unknown
Other features
Other features — specifications for Galaxy A8 (2018), Comet.
SpecificationGalaxy A8 (2018)Comet
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • barometer - Fast battery charging -ANT+ - Samsung Pay -IP68 dust/water proof (up to 1.5m for 30 mins) - Versions: A530F (Europe
  • Global Single-SIM); A530F/DS (Global Dual-SIM) Also known as Samsung Galaxy A8 (2018) Duos with dual-SIM card slots
  • Sensors Accelerometer MP3/WMA/eAAC+ player -MP4/H.264 player -Organizer -Photo viewer/editor -Voice memo/dial/commands -Predictive text input (Swype) For T-Mobile