O2 Xphone vs Xiaomi Mi 4

Compare recorded specifications, size and practical differences.

+ Add a third phone

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

    Xphone: 19 g lighter

    Xphone:
    130 g
    Mi 4:
    149 g
  • Width

    Xphone: 18.5 mm narrower

    Xphone:
    50 mm
    Mi 4:
    68.5 mm
  • Screen diagonal

    Xphone: 2.8 in smaller diagonal

    Xphone:
    2.2 in
    Mi 4:
    5 in
  • Chipset

    Xphone:
    TI OMAP 710
    Mi 4:
    Qualcomm MSM8974AC Snapdragon 801 (28 nm)
  • Depth

    Mi 4: 15.1 mm thinner

    Xphone:
    24 mm
    Mi 4:
    8.9 mm
  • Height

    Xphone: 19.2 mm shorter

    Xphone:
    120 mm
    Mi 4:
    139.2 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. Xphone

    Height:
    120 mm
    Width:
    50 mm
    Depth:
    24 mm +15.1 mm versus Mi 4
  2. 2. Mi 4

    Height:
    139.2 mm +19.2 mm versus Xphone
    Width:
    68.5 mm +18.5 mm versus Xphone
    Depth:
    8.9 mm

Weight

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

  1. 1. Xphone

    130 g

  2. 2. Mi 4

    149 g

    +19 g versus Xphone

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.

At least two phones need compatible screen dimensions for a drawing.

  1. 1. Xphone

    Xphone: Screen geometry unavailable or conflicting.

  2. 2. Mi 4

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

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.

Xphone: Original memory entry

64 MB RAM · 32 MB ROM

Mi 4: Original memory entry

16/64 GB · 2/3 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. Xphone

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details MMC/SD

2. Mi 4

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. Xphone

    1000 mAh

  2. 2. Mi 4

    3080 mAh

    +2080 mAh versus Xphone

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. Xphone2. Mi 4

Everyday essentials
Everyday essentials — specifications for Xphone, Mi 4.
SpecificationXphoneMi 4
Dimensions (HxWxD)
  • 120 Х 50 Х 24 mm
  • 139.2 Х 68.5 Х 8.9 mm
Weight
  • 130 g
  • 149 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.2" inch
  • 5" inch
Screen resolution
  • 176 x 220 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
  • 32 MB ROM
  • 16/64 GB
  • 2/3 GB RAM
Memory card support
  • MMC/SD
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 1000 mAh
  • Removable Li-Ion
  • 3080 mAh
  • Non-removable Li-Ion
Operating system OS
  • Microsoft Smartphone 2003
  • Android 4.4.3 (KitKat)
  • upgradable to 6.0.1 (Marshmallow); MIUI 10
Chipset
  • TI OMAP 710
  • Qualcomm MSM8974AC Snapdragon 801 (28 nm)
Headphone jack
  • No
  • Yes
Display
Display — specifications for Xphone, Mi 4.
SpecificationXphoneMi 4
Touchscreen Unknown
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 15.2 cm2
  • 68.9 cm2
Screen format Unknown
  • 16:9 (height:width)
Screen to body ratio
  • 25.4%
  • 72.3%
PPI /points per inch/
  • 0 PPI
  • 441 PPI
Camera and Video
Camera and Video — specifications for Xphone, Mi 4.
SpecificationXphoneMi 4
Rear camera, main
  • 0.3 MP
  • Single
  • 13 MP
  • Single
Camera specs Unknown
  • 13 MP
  • f/1.8
  • 1/3''
  • 1.12µm
  • AF
Functions Unknown
  • LED flash
  • panorama
  • HDR
Video
  • No
  • 1080p@30fps
Front camera, selfie
  • 0 MP,
  • 8 MP
  • Single
Specifications Unknown
  • 8 MP
  • f/1.8
Performance

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

Performance — specifications for Xphone, Mi 4.
SpecificationXphoneMi 4
Processor CPU
  • 133 MHz ARM925
  • Quad-core 2.5 GHz Krait 400
Graphics processor GPU Unknown
  • Adreno 330
Antutu 7 score * Unknown
  • 61632
GeekBench 4 Single Core * Unknown
  • 891
GeekBench 4 Multi-Core * Unknown
  • 1967
GeekBench 4 RenderScript * Unknown
  • 1997
General specs
General specs — specifications for Xphone, Mi 4.
SpecificationXphoneMi 4
Release date
  • 2003
  • 2014
  • July
Colors Unknown
  • Black
  • White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 230 EUR
Battery life
  • Stand by time- Up to 90 h Talking time- Up to 3 h
  • Stand by time- Up to 280 h (3G)
Body build Unknown
  • aluminum frame
  • plastic back
Communication and Connectivity
Communication and Connectivity — specifications for Xphone, Mi 4.
SpecificationXphoneMi 4
SIM card
  • Mini-SIM
  • Micro-SIM
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - all versions CDMA 800 / 1900 - Telecom 3G model -3G - TD-SCDMA - 4G model HSDPA 850 / 900 / 1900 / 2100 - Unicom 3G model
  • Telecom 3G model CDMA2000 1xEV-DO - Telecom 3G model -4G - LTE band 38(2600)
  • 39(1900)
  • 40(2300) - 4G model
Speed Unknown
  • HSPA 42.2/5.76 Mbps
  • LTE
  • EV-DO Rev.A 3.1 Mbps
GPRS
  • Class 8
  • Yes
Edge
  • No
  • Yes
Wi-Fi
  • No
  • 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
  • Proprietary
  • microUSB 2.0
  • USB Host
Bluetooth
  • Yes
  • 4.0
  • A2DP
Harmful irradiation Unknown
  • SAR - 1.36 W/kg (head)
Music and Audio
Music and Audio — specifications for Xphone, Mi 4.
SpecificationXphoneMi 4
Radio
  • No
  • FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Xphone, Mi 4.
SpecificationXphoneMi 4
Dop
  • Infrared port - Pocket applications(Outlook
  • IE
  • MSN
  • ActiveSync) -MP3/MP4 player -Voice memo - Produced by HTC. Functionally identical to Qtek 8080
  • i-mate Smartphone2 and Orange SPV E200.
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass
  • barometer
  • Infrared port - Fast battery charging (Quick Charge 2.0)