Plum Sync 4.0 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

    Sync 4.0: 52 g lighter

    Sync 4.0:
    97 g
    Mi 4:
    149 g
  • Width

    Sync 4.0: 4.9 mm narrower

    Sync 4.0:
    63.6 mm
    Mi 4:
    68.5 mm
  • Screen diagonal

    Sync 4.0: 1 in smaller diagonal

    Sync 4.0:
    4 in
    Mi 4:
    5 in
  • Chipset

    Sync 4.0:
    Mediatek MT6572M (28 nm)
    Mi 4:
    Qualcomm MSM8974AC Snapdragon 801 (28 nm)
  • Depth

    Mi 4: 0.9 mm thinner

    Sync 4.0:
    9.8 mm
    Mi 4:
    8.9 mm
  • Height

    Sync 4.0: 18.8 mm shorter

    Sync 4.0:
    120.4 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. Sync 4.0

    Height:
    120.4 mm
    Width:
    63.6 mm
    Depth:
    9.8 mm +0.9 mm versus Mi 4
  2. 2. Mi 4

    Height:
    139.2 mm +18.8 mm versus Sync 4.0
    Width:
    68.5 mm +4.9 mm versus Sync 4.0
    Depth:
    8.9 mm

Weight

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

  1. 1. Sync 4.0

    97 g

  2. 2. Mi 4

    149 g

    +52 g versus Sync 4.0

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. Sync 4.0

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    44.1 cm²
  2. 2. Mi 4

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

Mi 4 has approximately 56.3% more rectangular screen area than Sync 4.0.

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.

Sync 4.0: Original memory entry

512 MB · 256 MB RAM

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. Sync 4.0

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB

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. Sync 4.0

    1200 mAh

  2. 2. Mi 4

    3080 mAh

    +1880 mAh versus Sync 4.0

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. Sync 4.02. Mi 4

Everyday essentials
Everyday essentials — specifications for Sync 4.0, Mi 4.
SpecificationSync 4.0Mi 4
Dimensions (HxWxD)
  • 120.4 Х 63.6 Х 9.8 mm
  • 139.2 Х 68.5 Х 8.9 mm
Weight
  • 97 g
  • 149 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 4" inch
  • 5" inch
Screen resolution
  • 480 x 854 px
  • 1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 512 MB
  • 256 MB RAM
  • 16/64 GB
  • 2/3 GB RAM
Memory card support
  • microSD
  • up to 32 GB
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 1200 mAh
  • Removable Li-Ion
  • 3080 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 4.4 (KitKat)
  • Android 4.4.3 (KitKat)
  • upgradable to 6.0.1 (Marshmallow); MIUI 10
Chipset
  • Mediatek MT6572M (28 nm)
  • Qualcomm MSM8974AC Snapdragon 801 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Sync 4.0, Mi 4.
SpecificationSync 4.0Mi 4
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 44.1 cm2
  • 68.9 cm2
Screen format
  • 16:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 57.6%
  • 72.3%
PPI /points per inch/
  • 245 PPI
  • 441 PPI
Camera and Video
Camera and Video — specifications for Sync 4.0, Mi 4.
SpecificationSync 4.0Mi 4
Rear camera, main
  • 5 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 5 MP
  • AF
  • 13 MP
  • f/1.8
  • 1/3''
  • 1.12µm
  • AF
Functions
  • Face detection
  • LED flash
  • panorama
  • HDR
Video
  • 720p@30fps
  • 1080p@30fps
Front camera, selfie
  • 1.3 MP
  • Single
  • 8 MP
  • Single
Specifications
  • 1.3 MP
  • 8 MP
  • f/1.8
Performance

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

Performance — specifications for Sync 4.0, Mi 4.
SpecificationSync 4.0Mi 4
Processor CPU
  • Dual-core 1.2 GHz Cortex-A7
  • Quad-core 2.5 GHz Krait 400
Graphics processor GPU
  • Mali-400
  • Adreno 330
Antutu 7 score *
  • 5527
  • 61632
GeekBench 4 Single Core * Unknown
  • 891
GeekBench 4 Multi-Core * Unknown
  • 1967
GeekBench 4 RenderScript * Unknown
  • 1997
General specs
General specs — specifications for Sync 4.0, Mi 4.
SpecificationSync 4.0Mi 4
Release date
  • 2014
  • May
  • 2014
  • July
Colors
  • Black
  • White
  • Red
  • Blue
  • Black
  • White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 230 EUR
Battery life
  • Stand by time- Up to 760 h Talking time- Up to 14 h
  • Stand by time- Up to 280 h (3G)
Body build Unknown
  • aluminum frame
  • plastic back
Communication and Connectivity
Communication and Connectivity — specifications for Sync 4.0, Mi 4.
SpecificationSync 4.0Mi 4
SIM card
  • Dual 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 12
  • Yes
Edge
  • Class 12
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • DLNA
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • microUSB 2.0
  • USB Host
Bluetooth
  • 4.0
  • A2DP
  • 4.0
  • A2DP
Harmful irradiation Unknown
  • SAR - 1.36 W/kg (head)
Music and Audio
Music and Audio — specifications for Sync 4.0, Mi 4.
SpecificationSync 4.0Mi 4
Radio
  • FM radio
  • FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Sync 4.0, Mi 4.
SpecificationSync 4.0Mi 4
Dop
  • Sensors Accelerometer
  • gyro
  • proximity - Also known as Plum Sync 4.0 X400
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass
  • barometer
  • Infrared port - Fast battery charging (Quick Charge 2.0)