T-Mobile Comet vs ZTE Blade 20

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: 87.9 g lighter

    Comet:
    102.1 g
    Blade 20:
    190 g
  • Width

    Comet: 20.7 mm narrower

    Comet:
    55.9 mm
    Blade 20:
    76.6 mm
  • Screen diagonal

    Comet: 3.69 in smaller diagonal

    Comet:
    2.8 in
    Blade 20:
    6.49 in
  • Chipset

    Comet:
    Qualcomm MSM7225 Snapdragon S1
    Blade 20:
    Mediatek MT6771 Helio P70 (12nm)
  • Rear camera layout

    Comet:
    Single
    Blade 20:
    Dual
  • Depth

    Blade 20: 3.7 mm thinner

    Comet:
    12.7 mm
    Blade 20:
    9 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. Comet

    Height:
    104.1 mm
    Width:
    55.9 mm
    Depth:
    12.7 mm +3.7 mm versus Blade 20
  2. 2. Blade 20

    Height:
    162.9 mm +58.8 mm versus Comet
    Width:
    76.6 mm +20.7 mm versus Comet
    Depth:
    9 mm

Weight

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

  1. 1. Comet

    102.1 g

  2. 2. Blade 20

    190 g

    +87.9 g versus Comet

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. Comet

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²
  2. 2. Blade 20

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

Blade 20 has approximately 325.9% 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.

Recorded RAM for Comet, Blade 20, compared at the same storage capacity.
StorageCometBlade 20
128 GB Unknown 4 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. Comet

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

2. Blade 20

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (uses shared SIM 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. Comet

    1200 mAh

  2. 2. Blade 20

    5000 mAh

    +3800 mAh versus Comet

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. Comet2. Blade 20

Everyday essentials
Everyday essentials — specifications for Comet, Blade 20.
SpecificationCometBlade 20
Dimensions (HxWxD)
  • 104.1 Х 55.9 Х 12.7 mm
  • 162.9 Х 76.6 Х 9 mm
Weight
  • 102.1 g
  • 190 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.8" inch
  • 6.49" inch
Screen resolution
  • 240 x 320 px
  • 720 x 1560 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded. Unknown
  • 128GB 4GB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • 2 GB included
  • microSD
  • up to 256 GB (uses shared SIM slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1200 mAh
  • Removable Li-Ion
  • 5000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 2.2 (Froyo)
  • Android 9.0 (Pie)
Chipset
  • Qualcomm MSM7225 Snapdragon S1
  • Mediatek MT6771 Helio P70 (12nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Comet, Blade 20.
SpecificationCometBlade 20
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 256K
  • 16M
Screen area
  • 24.3 cm2
  • 103.4 cm2
Screen format
  • 4:3 (height:width)
  • 19.5:9 (height:width)
Screen to body ratio
  • 41.7%
  • 82.9%
PPI /points per inch/
  • 143 PPI
  • 265 PPI
Camera and Video
Camera and Video — specifications for Comet, Blade 20.
SpecificationCometBlade 20
Rear camera, main
  • 3.15 MP
  • Single
  • 16 MP
  • Dual
Camera specs
  • 3.15 MP
  • 16 MP
  • f/2.0
  • PDAF -8 MP
  • 12mm (ultrawide) -2 MP
  • depth sensor
Functions Unknown
  • LED flash
  • HDR
  • panorama
Video
  • CIF
  • 1080p@30fps
Front camera, selfie
  • 0 MP,
  • 8 MP
  • Single
Specifications Unknown
  • 8 MP
  • f/2.4
Performance
Performance — specifications for Comet, Blade 20.
SpecificationCometBlade 20
Processor CPU
  • 528 MHz ARM 11
  • Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
Graphics processor GPU
  • No
  • Mali-G72 MP3
General specs
General specs — specifications for Comet, Blade 20.
SpecificationCometBlade 20
Release date
  • 2010
  • November
  • 2019
  • October
Colors
  • Black
  • Turquoise
  • Magic red
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 150 EUR
  • 130 EUR
Battery life
  • Stand by time- Up to 288 h Talking time- Up to 9 h
Unknown
Body build Unknown
  • Front glass
  • plastic body
Communication and Connectivity
Communication and Connectivity — specifications for Comet, Blade 20.
SpecificationCometBlade 20
SIM card
  • Mini-SIM
  • Hybrid Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 2100 -4G - LTE (unspecified)
Speed
  • HSPA 7.2/0.384 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
USB
  • microUSB 2.0
  • microUSB 2.0
  • USB On-The-Go
Bluetooth
  • 2.0
  • A2DP
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for Comet, Blade 20.
SpecificationCometBlade 20
Radio
  • FM radio
  • FM radio
  • recording
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Comet, Blade 20.
SpecificationCometBlade 20
Dop
  • 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
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass - Fast battery charging 18W