O2 XDA 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

    XDA Comet: 8 g lighter

    XDA Comet:
    145 g
    nubia Z18 mini:
    153 g
  • Width

    XDA Comet: 12.6 mm narrower

    XDA Comet:
    58 mm
    nubia Z18 mini:
    70.6 mm
  • Screen diagonal

    XDA Comet: 3 in smaller diagonal

    XDA Comet:
    2.7 in
    nubia Z18 mini:
    5.7 in
  • Rear camera layout

    XDA Comet:
    Single
    nubia Z18 mini:
    Dual
  • Depth

    nubia Z18 mini: 11.4 mm thinner

    XDA Comet:
    19 mm
    nubia Z18 mini:
    7.6 mm
  • Height

    XDA Comet: 42 mm shorter

    XDA Comet:
    106 mm
    nubia Z18 mini:
    148 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. XDA Comet

    Height:
    106 mm
    Width:
    58 mm
    Depth:
    19 mm +11.4 mm versus nubia Z18 mini
  2. 2. nubia Z18 mini

    Height:
    148 mm +42 mm versus XDA Comet
    Width:
    70.6 mm +12.6 mm versus XDA Comet
    Depth:
    7.6 mm

Weight

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

  1. 1. XDA Comet

    145 g

  2. 2. nubia Z18 mini

    153 g

    +8 g versus XDA 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. XDA Comet

    Screen diagonal:
    2.7 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    22.6 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 271.4% more rectangular screen area than XDA 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 XDA Comet, nubia Z18 mini, compared at the same storage capacity.
StorageXDA Cometnubia Z18 mini
64 GB Unknown 6 GB RAM
128 GB Unknown 6 GB RAM
XDA Comet: Original memory entry

64 MB RAM · 1 GB ROM

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. XDA Comet

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details miniSD

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.

At least two unambiguous positive capacity values are needed for a chart. Original entries remain in the specifications.

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. XDA Comet2. nubia Z18 mini

Everyday essentials
Everyday essentials — specifications for XDA Comet, nubia Z18 mini.
SpecificationXDA Cometnubia Z18 mini
Dimensions (HxWxD)
  • 106 Х 58 Х 19 mm
  • 148 Х 70.6 Х 7.6 mm
Weight
  • 145 g
  • 153 g
Technology
  • TFT
  • LTPS IPS LCD
Screen size
  • 2.7" 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.
  • 64 MB RAM
  • 1 GB ROM
  • 64/128 GB
  • 6 GB RAM
Memory card support
  • miniSD
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 0 mAh,
  • 3450 mAh
  • Non-removable Li-Po
Operating system OS
  • Microsoft Windows Mobile 6.0 Professional
  • Android 8.1 (Oreo); nubia UI
Chipset Unknown
  • Qualcomm SDM660 Snapdragon 660 (14 nm)
Headphone jack
  • No
  • Yes
Display
Display — specifications for XDA Comet, nubia Z18 mini.
SpecificationXDA Cometnubia Z18 mini
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 22.6 cm2
  • 83.8 cm2
Screen format
  • 4:3 (height:width)
  • 18:9 (height:width)
Screen to body ratio
  • 36.7%
  • 80.2%
PPI /points per inch/
  • 148 PPI
  • 424 PPI
Camera and Video
Camera and Video — specifications for XDA Comet, nubia Z18 mini.
SpecificationXDA Cometnubia Z18 mini
Rear camera, main
  • 2 MP
  • Single
  • 24 MP
  • Dual
Camera specs
  • 2 MP
  • 24 MP
  • f/1.7
  • PDAF -5 MP
  • depth sensor
Functions
  • LED flash
  • LED flash
  • HDR
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 8 MP
  • Single
Specifications
  • VGA videocall camera
  • 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 XDA Comet, nubia Z18 mini.
SpecificationXDA Cometnubia Z18 mini
Processor CPU
  • Intel XScale PXA 270 620 MHz
  • Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260)
Graphics processor GPU Unknown
  • Adreno 512
Antutu 7 score * Unknown
  • 145322
General specs
General specs — specifications for XDA Comet, nubia Z18 mini.
SpecificationXDA Cometnubia Z18 mini
Release date
  • 2007
  • September
  • 2018
  • April
Colors
  • Silver
  • Provence Edition
  • Ying Yu powder
  • Celadon blue
  • Diamond black
  • Glacier white
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 260 EUR
Battery life
  • Stand by time- Up to 200 h Talking time- Up to 6 h
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for XDA Comet, nubia Z18 mini.
SpecificationXDA Cometnubia Z18 mini
SIM card
  • Mini-SIM
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 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
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
GPRS
  • Class 10
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11b/g
  • Wi-Fi 802.11 b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • miniUSB
  • Type-C 1.0 reversible connector
Bluetooth
  • 1.2
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for XDA Comet, nubia Z18 mini.
SpecificationXDA Cometnubia Z18 mini
Radio
  • Stereo FM radio
  • RDS
  • No
Others
  • Handwriting recognition
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for XDA Comet, nubia Z18 mini.
SpecificationXDA Cometnubia Z18 mini
Dop
  • Infrared port - Pocket Office -Voice memo -MP3/AAC player
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass