Acer DX900 vs Xiaomi Mi 4i

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

    Mi 4i: 17 g lighter

    DX900:
    147 g
    Mi 4i:
    130 g
  • Width

    DX900: 9.1 mm narrower

    DX900:
    60.5 mm
    Mi 4i:
    69.6 mm
  • Screen diagonal

    DX900: 2.2 in smaller diagonal

    DX900:
    2.8 in
    Mi 4i:
    5 in
  • Depth

    Mi 4i: 9.2 mm thinner

    DX900:
    17 mm
    Mi 4i:
    7.8 mm
  • Height

    DX900: 32.1 mm shorter

    DX900:
    106 mm
    Mi 4i:
    138.1 mm
  • Release year

    DX900:
    2009
    Mi 4i:
    2015

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. DX900

    Height:
    106 mm
    Width:
    60.5 mm
    Depth:
    17 mm +9.2 mm versus Mi 4i
  2. 2. Mi 4i

    Height:
    138.1 mm +32.1 mm versus DX900
    Width:
    69.6 mm +9.1 mm versus DX900
    Depth:
    7.8 mm

Weight

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

  1. 1. DX900

    147 g

    +17 g versus Mi 4i

  2. 2. Mi 4i

    130 g

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. DX900

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²
  2. 2. Mi 4i

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

Mi 4i has approximately 183.9% more rectangular screen area than DX900.

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 DX900, Mi 4i, compared at the same storage capacity.
StorageDX900Mi 4i
16 GB Unknown 2 GB RAM
32 GB Unknown 2 GB RAM
DX900: Original memory entry

128 MB RAM · 256 MB 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. DX900

NFC:
See details Super AMOLED
Headphone jack:
See details panorama
Memory card support:
See details microSD (dedicated slot)

2. Mi 4i

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. DX900

    1530 mAh

  2. 2. Mi 4i

    3120 mAh

    +1590 mAh versus DX900

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. DX9002. Mi 4i

Everyday essentials
Everyday essentials — specifications for DX900, Mi 4i.
SpecificationDX900Mi 4i
Dimensions (HxWxD)
  • 106 Х 60.5 Х 17 mm
  • 138.1 Х 69.6 Х 7.8 mm
Weight
  • 147 g
  • 130 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.8" inch
  • 5" inch
Screen resolution
  • 480 x 640 px
  • 1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128 MB RAM
  • 256 MB ROM
  • 16/32 GB
  • 2 GB RAM
Memory card support
  • microSD (dedicated slot)
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 1530 mAh
  • Removable Li-Po
  • 3120 mAh
  • Non-removable Li-Ion
Operating system OS
  • Microsoft Windows Mobile 6.1 Professional
  • Android 5.0.2 (Lollipop); MIUI 8.2
Chipset Unknown
  • Qualcomm MSM8939 Snapdragon 615 (28 nm)
NFC
  • Super AMOLED
Unknown
Headphone jack
  • panorama
  • Yes
Display
Display — specifications for DX900, Mi 4i.
SpecificationDX900Mi 4i
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 24.3 cm2
  • 68.9 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 37.9%
  • 71.7%
PPI /points per inch/
  • 286 PPI
  • 441 PPI
Screen protection Unknown
  • Corning scratch-resistant glass
Camera and Video
Camera and Video — specifications for DX900, Mi 4i.
SpecificationDX900Mi 4i
Rear camera, main
  • 3.15 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 3.15 MP
  • AF
  • 13 MP
  • AF
  • f/2.0
Functions
  • Dual-LED flash
  • Dual-LED dual-tone flash
  • panorama
  • HDR
Video
  • Yes
  • 1080p@30fps
  • 480p@120fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 5 MP
  • Single
Specifications
  • VGA videocall camera
  • 5 MP
  • f/1.8
Performance

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

Performance — specifications for DX900, Mi 4i.
SpecificationDX900Mi 4i
Processor CPU
  • 533 MHz Samsung S3C 6410
  • Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
Graphics processor GPU Unknown
  • Adreno 405
Antutu 7 score * Unknown
  • 40156
GeekBench 4 Single Core * Unknown
  • 617
GeekBench 4 Multi-Core * Unknown
  • 1374
GeekBench 4 RenderScript * Unknown
  • 1404
General specs
General specs — specifications for DX900, Mi 4i.
SpecificationDX900Mi 4i
Release date
  • 2009
  • February
  • 2015
  • April
Colors
  • Black
  • Dark Gray
  • Black
  • White
  • Yellow
  • Blue
  • Pink
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 90 EUR
  • 260 EUR
Battery life
  • Stand by time- Up to 150 h Talking time- Up to10 h
  • Talking time- Up to 35 h (3G)
Body build Unknown
  • plastic body
Communication and Connectivity
Communication and Connectivity — specifications for DX900, Mi 4i.
SpecificationDX900Mi 4i
SIM card
  • Dual SIM (Mini-SIM)
  • Dual SIM (Micro-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 GSM 900 / 1800 / 1900 - SIM 2
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 1900 / 2100 TD-SCDMA -4G - LTE band 3(1800)
  • 7(2600)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 7.2/0.384 Mbps
  • HSPA
  • LTE Cat4 150/50 Mbps
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
GPS
  • Yes
  • SiRF Star III chipset
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • miniUSB
  • microUSB 2.0
  • USB Host
Bluetooth
  • microUSB 2.0
  • A2DP
  • 4.1
  • A2DP
Harmful irradiation Unknown
  • SAR - 1.29 W/kg (head)
Music and Audio
Music and Audio — specifications for DX900, Mi 4i.
SpecificationDX900Mi 4i
Radio
  • panorama
  • Stereo FM radio
Others
  • Handwriting recognition
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for DX900, Mi 4i.
SpecificationDX900Mi 4i
Dop
  • Sensors Accelerometer Pocket Office -Voice memo -MP3 player Also known as Acer Tempo DX900
  • Acer Tempo X960
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging: 40% in 60 min (Quick Charge)