T-Mobile Comet vs ZTE nubia Z18 mini

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: 50.9 g lighter

    Comet:
    102.1 g
    nubia Z18 mini:
    153 g
  • Width

    Comet: 14.7 mm narrower

    Comet:
    55.9 mm
    nubia Z18 mini:
    70.6 mm
  • Screen diagonal

    Comet: 2.9 in smaller diagonal

    Comet:
    2.8 in
    nubia Z18 mini:
    5.7 in
  • Chipset

    Comet:
    Qualcomm MSM7225 Snapdragon S1
    nubia Z18 mini:
    Qualcomm SDM660 Snapdragon 660 (14 nm)
  • Rear camera layout

    Comet:
    Single
    nubia Z18 mini:
    Dual
  • Depth

    nubia Z18 mini: 5.1 mm thinner

    Comet:
    12.7 mm
    nubia Z18 mini:
    7.6 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 +5.1 mm versus nubia Z18 mini
  2. 2. nubia Z18 mini

    Height:
    148 mm +43.9 mm versus Comet
    Width:
    70.6 mm +14.7 mm versus Comet
    Depth:
    7.6 mm

Weight

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

  1. 1. Comet

    102.1 g

  2. 2. nubia Z18 mini

    153 g

    +50.9 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. nubia Z18 mini

    Screen diagonal:
    5.7 in
    Aspect ratio (height:width):
    18:9
    Approximate rectangular screen area:
    83.8 cm²

nubia Z18 mini has approximately 245.3% 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, nubia Z18 mini, compared at the same storage capacity.
StorageCometnubia Z18 mini
64 GB Unknown 6 GB RAM
128 GB Unknown 6 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. nubia Z18 mini

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

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. nubia Z18 mini

    3450 mAh

    +2250 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. nubia Z18 mini

Everyday essentials
Everyday essentials — specifications for Comet, nubia Z18 mini.
SpecificationCometnubia Z18 mini
Dimensions (HxWxD)
  • 104.1 Х 55.9 Х 12.7 mm
  • 148 Х 70.6 Х 7.6 mm
Weight
  • 102.1 g
  • 153 g
Technology
  • TFT
  • LTPS IPS LCD
Screen size
  • 2.8" inch
  • 5.7" inch
Screen resolution
  • 240 x 320 px
  • 1080 x 2160 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded. Unknown
  • 64/128 GB
  • 6 GB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • 2 GB included
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 1200 mAh
  • Removable Li-Ion
  • 3450 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 2.2 (Froyo)
  • Android 8.1 (Oreo); nubia UI
Chipset
  • Qualcomm MSM7225 Snapdragon S1
  • Qualcomm SDM660 Snapdragon 660 (14 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Comet, nubia Z18 mini.
SpecificationCometnubia Z18 mini
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 256K
  • 16M
Screen area
  • 24.3 cm2
  • 83.8 cm2
Screen format
  • 4:3 (height:width)
  • 18:9 (height:width)
Screen to body ratio
  • 41.7%
  • 80.2%
PPI /points per inch/
  • 143 PPI
  • 424 PPI
Camera and Video
Camera and Video — specifications for Comet, nubia Z18 mini.
SpecificationCometnubia Z18 mini
Rear camera, main
  • 3.15 MP
  • Single
  • 24 MP
  • Dual
Camera specs
  • 3.15 MP
  • 24 MP
  • f/1.7
  • PDAF -5 MP
  • depth sensor
Functions Unknown
  • LED flash
  • HDR
Video
  • CIF
  • 1080p@30fps
Front camera, selfie
  • 0 MP,
  • 8 MP
  • Single
Specifications Unknown
  • 8 MP
  • f/2.0
  • 1/4''
  • 1.12µm
Performance

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

Performance — specifications for Comet, nubia Z18 mini.
SpecificationCometnubia Z18 mini
Processor CPU
  • 528 MHz ARM 11
  • Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260)
Graphics processor GPU
  • No
  • Adreno 512
Antutu 7 score * Unknown
  • 145322
General specs
General specs — specifications for Comet, nubia Z18 mini.
SpecificationCometnubia Z18 mini
Release date
  • 2010
  • November
  • 2018
  • April
Colors
  • Black
  • Provence Edition
  • Ying Yu powder
  • Celadon blue
  • Diamond black
  • Glacier white
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 150 EUR
  • 260 EUR
Battery life
  • Stand by time- Up to 288 h Talking time- Up to 9 h
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Comet, nubia Z18 mini.
SpecificationCometnubia Z18 mini
SIM card
  • Mini-SIM
  • 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 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 CDMA2000 1xEV-DO -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 8(900)
  • 19(800)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 7.2/0.384 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
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/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • Type-C 1.0 reversible connector
Bluetooth
  • 2.0
  • A2DP
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for Comet, nubia Z18 mini.
SpecificationCometnubia Z18 mini
Radio
  • FM radio
  • No
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Comet, nubia Z18 mini.
SpecificationCometnubia Z18 mini
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
  • gyro
  • proximity
  • compass