O2 XDA Comet vs Xiaomi Mi Max

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: 58 g lighter

    XDA Comet:
    145 g
    Mi Max:
    203 g
  • Width

    XDA Comet: 30.3 mm narrower

    XDA Comet:
    58 mm
    Mi Max:
    88.3 mm
  • Screen diagonal

    XDA Comet: 3.74 in smaller diagonal

    XDA Comet:
    2.7 in
    Mi Max:
    6.44 in
  • Depth

    Mi Max: 11.5 mm thinner

    XDA Comet:
    19 mm
    Mi Max:
    7.5 mm
  • Height

    XDA Comet: 67.1 mm shorter

    XDA Comet:
    106 mm
    Mi Max:
    173.1 mm
  • Release year

    XDA Comet:
    2007
    Mi Max:
    2016

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 +11.5 mm versus Mi Max
  2. 2. Mi Max

    Height:
    173.1 mm +67.1 mm versus XDA Comet
    Width:
    88.3 mm +30.3 mm versus XDA Comet
    Depth:
    7.5 mm

Weight

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

  1. 1. XDA Comet

    145 g

  2. 2. Mi Max

    203 g

    +58 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. Mi Max

    Screen diagonal:
    6.44 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    114.3 cm²

Mi Max has approximately 406.4% 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.

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

XDA Comet: Original memory entry

64 MB RAM · 1 GB ROM

Mi Max: Original memory entry

16 GB · 2 GB RAM; 32/64 GB · 3 GB RAM128 GB · 4 GB RAM - Prime model

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. Mi Max

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (uses SIM 1 slot)

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. Mi Max

Everyday essentials
Everyday essentials — specifications for XDA Comet, Mi Max.
SpecificationXDA CometMi Max
Dimensions (HxWxD)
  • 106 Х 58 Х 19 mm
  • 173.1 Х 88.3 Х 7.5 mm
Weight
  • 145 g
  • 203 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.7" inch
  • 6.44" inch
Screen resolution
  • 240 x 320 px
  • 1080 x 1920 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
  • 16 GB
  • 2 GB RAM; 32/64 GB
  • 3 GB RAM128 GB
  • 4 GB RAM - Prime model
Memory card support
  • miniSD
  • microSD
  • up to 256 GB (uses SIM 1 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 0 mAh,
  • 4850 mAh
  • Non-removable Li-Ion
Operating system OS
  • Microsoft Windows Mobile 6.0 Professional
  • Android 6.0 (Marshmallow)
  • upgradable to 7.0 (Nougat); MIUI 10
Chipset Unknown
  • Qualcomm MSM8956 Snapdragon 650 -Qualcomm MSM8976 Snapdragon 652 (28 nm) Prime model
Headphone jack
  • No
  • Yes
Display
Display — specifications for XDA Comet, Mi Max.
SpecificationXDA CometMi Max
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 22.6 cm2
  • 114.3 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 36.7%
  • 74.8%
PPI /points per inch/
  • 148 PPI
  • 342 PPI
Screen protection Unknown
  • Corning Gorilla Glass 4
Camera and Video
Camera and Video — specifications for XDA Comet, Mi Max.
SpecificationXDA CometMi Max
Rear camera, main
  • 2 MP
  • Single
  • 16 MP
  • Single
Camera specs
  • 2 MP
  • 16 MP
  • PDAF
  • f/2.0
Functions
  • LED flash
  • Dual-LED dual-tone flash
  • panorama
  • HDR
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 5 MP
  • Single
Specifications
  • VGA videocall camera
  • 5 MP
  • f/2.0
Performance

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

Performance — specifications for XDA Comet, Mi Max.
SpecificationXDA CometMi Max
Processor CPU
  • Intel XScale PXA 270 620 MHz
  • Hexa-core (4x1.4 GHz Cortex-A53 & 2x1.8 GHz Cortex-A72) -Octa-core (4x1.4 GHz Cortex-A53 & 4x1.8 GHz Cortex-A72)
Graphics processor GPU Unknown
  • Adreno 510
GeekBench 4 Single Core * Unknown
  • 1376
GeekBench 4 Multi-Core * Unknown
  • 3146
GeekBench 4 RenderScript * Unknown
  • 3679
GeekBench 4 Battery * Unknown
  • 2489
GeekBench 5 Single Core * Unknown
  • 261
GeekBench 5 Multi-Core * Unknown
  • 770
General specs
General specs — specifications for XDA Comet, Mi Max.
SpecificationXDA CometMi Max
Release date
  • 2007
  • September
  • 2016
  • May
Colors
  • Silver
  • Gray
  • Silver
  • Gold
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 150 EUR
Battery life
  • Stand by time- Up to 200 h Talking time- Up to 6 h
Unknown
Body build Unknown
  • Front glass
  • aluminum body
Communication and Connectivity
Communication and Connectivity — specifications for XDA Comet, Mi Max.
SpecificationXDA CometMi Max
SIM card
  • Mini-SIM
  • Hybrid Dual SIM (Nano-SIM/ Micro-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 / 1900 -3G - HSDPA 850 / 900 / 1900 / 2100 CDMA2000 1xEV-DO TD-SCDMA -4G - LTE band 1(2100)
  • 3(1800)
  • 7(2600)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA
  • HSPA
  • LTE
GPRS
  • Class 10
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11b/g
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • DLNA
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • miniUSB
  • microUSB 2.0
  • USB Host
Bluetooth
  • 1.2
  • 4.2
  • A2DP
  • LE
Harmful irradiation Unknown
  • SAR - 0.84 W/kg (head) 0.63 W/kg (body)
Music and Audio
Music and Audio — specifications for XDA Comet, Mi Max.
SpecificationXDA CometMi Max
Radio
  • Stereo FM radio
  • RDS
  • FM radio
  • recording
Others
  • Handwriting recognition
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for XDA Comet, Mi Max.
SpecificationXDA CometMi Max
Dop
  • Infrared port - Pocket Office -Voice memo -MP3/AAC player
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - Versions: Global; Standard; Prime