Acer F900 vs Lenovo A820

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

    F900: 4.7 mm narrower

    F900:
    63.5 mm
    A820:
    68.2 mm
  • Screen diagonal

    F900: 0.7 in smaller diagonal

    F900:
    3.8 in
    A820:
    4.5 in
  • Depth

    A820: 5.9 mm thinner

    F900:
    15.8 mm
    A820:
    9.9 mm
  • Height

    F900: 17.5 mm shorter

    F900:
    117.5 mm
    A820:
    135 mm
  • Release year

    F900:
    2009
    A820:
    2013

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. F900

    Height:
    117.5 mm
    Width:
    63.5 mm
    Depth:
    15.8 mm +5.9 mm versus A820
  2. 2. A820

    Height:
    135 mm +17.5 mm versus F900
    Width:
    68.2 mm +4.7 mm versus F900
    Depth:
    9.9 mm

Weight

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

  1. 1. F900

    150 g

  2. 2. A820

    151 g

    +1 g versus F900

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. F900

    Screen diagonal:
    3.8 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    41.1 cm²
  2. 2. A820

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

A820 has approximately 35.8% more rectangular screen area than F900.

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 F900, A820, compared at the same storage capacity.
StorageF900A820
4 GB Unknown 1 GB RAM
F900: 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. F900

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

2. A820

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

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. F900

    1530 mAh

  2. 2. A820

    2000 mAh

    +470 mAh versus F900

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. F9002. A820

Everyday essentials
Everyday essentials — specifications for F900, A820.
SpecificationF900A820
Dimensions (HxWxD)
  • 117.5 Х 63.5 Х 15.8 mm
  • 135 Х 68.2 Х 9.9 mm
Weight
  • 150 g
  • 151 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 3.8" inch
  • 4.5" inch
Screen resolution
  • 480 x 800 px
  • 540 x 960 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
  • 4 GB
  • 1 GB RAM
Memory card support
  • microSD (dedicated slot)
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1530 mAh
  • Removable Li-Ion
  • 2000 mAh
  • Removable Li-Ion
Operating system OS
  • Microsoft Windows Mobile 6.1 Professional
  • Android 4.1.2 (Jelly Bean)
Chipset Unknown
  • Mediatek MT6589 (28 nm)
NFC
  • Super AMOLED
Unknown
Headphone jack
  • panorama
  • Yes
Display
Display — specifications for F900, A820.
SpecificationF900A820
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 41.1 cm2
  • 55.8 cm2
Screen format
  • 5:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 55.1%
  • 60.6%
PPI /points per inch/
  • 246 PPI
  • 245 PPI
Camera and Video
Camera and Video — specifications for F900, A820.
SpecificationF900A820
Rear camera, main
  • 3.15 MP
  • Single
  • 8 MP
  • Single
Camera specs
  • 3.15 MP
  • AF
  • 8 MP
  • AF
Functions
  • Dual-LED flash
Unknown
Video
  • 480p@30fps
  • 720p
Front camera, selfie
  • 0 MP,
  • 0 MP,
Specifications
  • Super AMOLED
Unknown
Performance

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

Performance — specifications for F900, A820.
SpecificationF900A820
Processor CPU
  • 533 MHz Samsung S3C 6410
  • Quad-core 1.2 GHz Cortex-A7
Graphics processor GPU Unknown
  • PowerVR SGX544
Antutu 7 score * Unknown
  • 17141
General specs
General specs — specifications for F900, A820.
SpecificationF900A820
Release date
  • 2009
  • February
  • 2013
Colors
  • Black
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 210 EUR
  • 110 EUR
Battery life
  • Stand by time- Up to 150 h Talking time- Up to 4 h
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for F900, A820.
SpecificationF900A820
SIM card
  • Single SIM (Mini-SIM)Dual SIM (Mini-SIM/Micro-SIM
  • Dual SIM (Mini-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 900 / 1800 / 1900 - SIM 1 & SIM 2
Speed
  • HSPA 7.2/2 Mbps
  • HSPA
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • SiRF Star III chipset
  • Yes
  • with A-GPS
USB
  • miniUSB 2.0
  • microUSB 2.0
Bluetooth
  • microUSB 2.0
  • A2DP
  • Yes
Harmful irradiation
  • SAR - 0.59 W/kg (head) 0.82 W/kg (body)
  • SAR EU - 0.37 W/kg (head)
Music and Audio
Music and Audio — specifications for F900, A820.
SpecificationF900A820
Radio
  • Stereo FM radio
  • RDS
  • FM radio
Others
  • Handwriting recognition
Unknown
Other features
Other features — specifications for F900, A820.
SpecificationF900A820
Dop
  • Sensors Accelerometer MP3/WMA/WAV/AAC+ player -MP4/H.264/WMV player -Pocket Office -Organizer -Voice memo/dial -Predictive text input
  • Sensors Accelerometer
  • proximity