Acer Allegro 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.

  • Width

    Allegro: 10.6 mm narrower

    Allegro:
    59 mm
    Mi 4i:
    69.6 mm
  • Screen diagonal

    Allegro: 1.4 in smaller diagonal

    Allegro:
    3.6 in
    Mi 4i:
    5 in
  • Chipset

    Allegro:
    Qualcomm MSM8255 Snapdragon S2
    Mi 4i:
    Qualcomm MSM8939 Snapdragon 615 (28 nm)
  • Depth

    Mi 4i: 5.2 mm thinner

    Allegro:
    13 mm
    Mi 4i:
    7.8 mm
  • Height

    Allegro: 22.1 mm shorter

    Allegro:
    116 mm
    Mi 4i:
    138.1 mm
  • Release year

    Allegro:
    2011
    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. Allegro

    Height:
    116 mm
    Width:
    59 mm
    Depth:
    13 mm +5.2 mm versus Mi 4i
  2. 2. Mi 4i

    Height:
    138.1 mm +22.1 mm versus Allegro
    Width:
    69.6 mm +10.6 mm versus Allegro
    Depth:
    7.8 mm

Weight

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

  1. 1. Allegro

    126 g

  2. 2. Mi 4i

    130 g

    +4 g versus Allegro

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. Allegro

    Screen diagonal:
    3.6 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    36.9 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 86.8% more rectangular screen area than Allegro.

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

8 GB

Practical features

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

1. Allegro

NFC:
See details Super AMOLED
Headphone jack:
Yes
Memory card support:
See details panorama

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. Allegro

    1300 mAh

  2. 2. Mi 4i

    3120 mAh

    +1820 mAh versus Allegro

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. Allegro2. Mi 4i

Everyday essentials
Everyday essentials — specifications for Allegro, Mi 4i.
SpecificationAllegroMi 4i
Dimensions (HxWxD)
  • 116 Х 59 Х 13 mm
  • 138.1 Х 69.6 Х 7.8 mm
Weight
  • 126 g
  • 130 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 3.6" inch
  • 5" inch
Screen resolution
  • 480 x 800 px
  • 1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 8 GB
  • 16/32 GB
  • 2 GB RAM
Memory card support
  • panorama
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 1300 mAh
  • Removable Li-Ion
  • 3120 mAh
  • Non-removable Li-Ion
Operating system OS
  • Microsoft Windows Phone 7.5 Mango
  • Android 5.0.2 (Lollipop); MIUI 8.2
Chipset
  • Qualcomm MSM8255 Snapdragon S2
  • Qualcomm MSM8939 Snapdragon 615 (28 nm)
NFC
  • Super AMOLED
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Allegro, Mi 4i.
SpecificationAllegroMi 4i
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 36.9 cm2
  • 68.9 cm2
Screen format
  • 5:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 53.9%
  • 71.7%
PPI /points per inch/
  • 259 PPI
  • 441 PPI
Screen protection Unknown
  • Corning scratch-resistant glass
Camera and Video
Camera and Video — specifications for Allegro, Mi 4i.
SpecificationAllegroMi 4i
Rear camera, main
  • 5 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 5 MP
  • AF
  • 13 MP
  • AF
  • f/2.0
Functions Unknown
  • Dual-LED dual-tone flash
  • panorama
  • HDR
Video
  • Yes
  • 1080p@30fps
  • 480p@120fps
Front camera, selfie
  • 0 MP,
  • 5 MP
  • Single
Specifications
  • Super AMOLED
  • 5 MP
  • f/1.8
Performance

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

Performance — specifications for Allegro, Mi 4i.
SpecificationAllegroMi 4i
Processor CPU
  • 1.0 GHz Scorpion
  • Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
Graphics processor GPU
  • Adreno 205
  • Adreno 405
Antutu 7 score *
  • 586
  • 40156
GeekBench 4 Single Core * Unknown
  • 617
GeekBench 4 Multi-Core * Unknown
  • 1374
GeekBench 4 RenderScript * Unknown
  • 1404
General specs
General specs — specifications for Allegro, Mi 4i.
SpecificationAllegroMi 4i
Release date
  • 2011
  • October
  • 2015
  • April
Colors
  • Black
  • White
  • Dark Gray
  • Black
  • White
  • Yellow
  • Blue
  • Pink
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 140 EUR
  • 260 EUR
Battery life
  • Talking time- Up to 6 h (3G)
  • Talking time- Up to 35 h (3G)
Body build Unknown
  • plastic body
Communication and Connectivity
Communication and Connectivity — specifications for Allegro, Mi 4i.
SpecificationAllegroMi 4i
SIM card
  • Single SIM (Mini-SIM)Dual SIM (Mini-SIM/Micro-SIM
  • Dual SIM (Micro-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-3G - HSDPA 900 / 2100-4G - LTE
  • 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 42.2/5.76 Mbps
  • HSPA
  • LTE Cat4 150/50 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • DLNA
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • microUSB 2.0
  • USB Host
Bluetooth
  • Wi-Fi 802.11 a/b/g/n/ac
  • A2DP
  • EDR
  • 4.1
  • A2DP
Harmful irradiation Unknown
  • SAR - 1.29 W/kg (head)
Music and Audio
Music and Audio — specifications for Allegro, Mi 4i.
SpecificationAllegroMi 4i
Radio
  • panorama
  • Stereo FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Allegro, Mi 4i.
SpecificationAllegroMi 4i
Dop
  • Sensors Accelerometer
  • proximity
  • compass - MP3/WAV/WMA/eAAC+ player -MP4/WMV/H.264 player -Document viewer -Voice memo -Predictive text input - Also known as Acer W4
  • Acer M310
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging: 40% in 60 min (Quick Charge)