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  2. Allview A4 Duo vs Sharp Aquos R2 compact

Allview A4 Duo vs Sharp Aquos R2 compact

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.

    • WeightA4 Duo: 24.4 g lighterA4 Duo: 110.6 g · Aquos R2 compact: 135 g
    • Screen diagonalA4 Duo: 1.7 in smaller diagonalA4 Duo: 3.5 in · Aquos R2 compact: 5.2 in
    • DepthAquos R2 compact: 2.7 mm thinnerAquos R2 compact: 9.3 mm · A4 Duo: 12 mm
    • HeightA4 Duo: 14.9 mm shorterA4 Duo: 116.1 mm · Aquos R2 compact: 131 mm
    • Release year2013 / 2018A4 Duo: 2013 · Aquos R2 compact: 2018

    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.

    Front
    A4 Duo: 116.1 × 63.2 mm 1 Aquos R2 compact: 131 × 64 mm 2
    Side
    A4 Duo: 116.1 × 12 mm 1 Aquos R2 compact: 131 × 9.3 mm 2
    1. 1. A4 Duo
      Height
      116.1 mm
      Width
      63.2 mm
      Depth
      12 mm+2.7 mm versus Aquos R2 compact
      Weight
      110.6 g
    2. 2. Aquos R2 compact
      Height
      131 mm+14.9 mm versus A4 Duo
      Width
      64 mm
      Depth
      9.3 mm
      Weight
      135 g
    Weight

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

    1. 1. A4 Duo110.6 g
    2. 2. Aquos R2 compact135 g

      +24.4 g versus A4 Duo

    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.

    Screen size
    A4 Duo: 3.5 in, 3:2, About 36.5 cm² rectangular area 1 Aquos R2 compact: 5.2 in, 19:9, About 67.5 cm² rectangular area 2
    1. 1. A4 Duo 3.5 in · 3:2 About 36.5 cm² rectangular area
    2. 2. Aquos R2 compact 5.2 in · 19:9 About 67.5 cm² rectangular area

    Aquos R2 compact has approximately 85% more rectangular screen area than A4 Duo.

    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.

    A4 Duo: Original memory entry

    512 MB RAM - Liquid M2208 GB

    Aquos R2 compact: Original memory entry

    64 GB · 512GB 4GB

    Practical features

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

    1. A4 Duo

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

    2. Aquos R2 compact

    NFC
    Yes
    Headphone jack
    Yes
    Memory card support
    See details microSD · up to 512 GB

    Battery capacity

    Capacity is not battery life. No endurance test is implied.

    Recorded capacity

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

    1. 1. A4 Duo1200 mAh
    2. 2. Aquos R2 compact2500 mAh

      +1300 mAh versus A4 Duo

    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. A4 Duo2. Aquos R2 compact

    Everyday essentials
    Everyday essentials
    SpecificationA4 DuoAquos R2 compact
    Dimensions (HxWxD)
    • 116.1 Х 63.2 Х 12 mm
    • 131 Х 64 Х 9.3 mm
    Weight
    • 110.6 g
    • 135 g
    Technology
    • TFT
    • IGZO IPS LCD
    Screen size
    • 3.5" inch
    • 5.2" inch
    Screen resolution
    • 320 x 480 px
    • 1080 x 2280 px
    Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
    • 512 MB RAM - Liquid M2208 GB
    • 64 GB
    • 512GB 4GB
    Memory card support
    • panorama
    • microSD
    • up to 512 GB
    BatteryCapacity is not battery life. No endurance test is implied.
    • 1200 mAh
    • Removable Li-Ion
    • 2500 mAh
    • Non-removable Li-Ion
    Operating system OS
    • Android 4.2 (Jelly Bean)
    • Android 9.0 (Pie)
    Chipset Unknown
    • Qualcomm SDM845 Snapdragon 845 (10 nm)
    NFC
    • Super AMOLED
    • Yes
    Headphone jack
    • Yes
    • Yes
    Display
    Display
    SpecificationA4 DuoAquos R2 compact
    Touchscreen
    • capacitive touchscreen
    • capacitive touchscreen
    Display colors
    • Super AMOLED
    • 16M
    Screen area
    • 36.5 cm2
    • 67.5 cm2
    Screen format
    • 3:2 (height:width)
    • 19:9 (height:width)
    Screen to body ratio
    • 149.7 g
    • 80.5%
    PPI /points per inch/
    • 165 PPI
    • 485 PPI
    Screen protection Unknown
    • Corning Gorilla Glass 3
    Camera and Video
    Camera and Video
    SpecificationA4 DuoAquos R2 compact
    Rear camera, main
    • 2 MP
    • Single
    • 22.6 MP
    • Single
    Camera specs
    • 2 MP
    • 22.6 MP
    • f/1.9
    • 22 mm
    • PDAF
    • OIS
    Functions Unknown
    • LED flash
    • HDR
    • panorama
    Video
    • Yes
    • 1080p@30fps
    Front camera, selfie
    • 0 MP,
    • 8 MP
    • Single
    Specifications
    • Super AMOLED
    • 8 MP
    • f/2.2
    • 23 mm
    Performance
    Performance
    SpecificationA4 DuoAquos R2 compact
    Processor CPU
    • Dual-core 1.0 GHz Cotex-A7
    • Octa-core (4x2.6 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver)
    Graphics processor GPU
    • Mali-400MP2 Z525 -Mali-T720MP2 Z528
    • Adreno 630
    Antutu 7 scoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.
    • 11698
    		 Unknown
    General specs
    General specs
    SpecificationA4 DuoAquos R2 compact
    Release date
    • 2013
    • November
    • 2018
    • November
    Colors
    • Black
    • Smokey Green
    • Deep White
    • Pure Black
    Historical recorded priceLegacy catalogue value; date unknown. Not a current offer.
    • 80 EUR
    		 Unknown
    Battery life
    • Stand by time- Up to 200 h Talking time- Up to 8 h 20 min
    		 Unknown
    Body build Unknown
    • Front glass
    • aluminum frame
    • plastic back
    Communication and Connectivity
    Communication and Connectivity
    SpecificationA4 DuoAquos R2 compact
    SIM card
    • Dual SIM (dual stand-by)
    • Nano-SIM
    Network
    • Show all network frequencies: -2G - GSM 900 / 1800 / 1900
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA 2100 -4G - LTE
    Speed
    • HSPA 42.2/5.76 Mbps
    • HSPA
    • LTE
    GPRS
    • Class 12
    • Yes
    Edge
    • Class 10
    • Yes
    Wi-Fi
    • Wi-Fi 802.11 b/g/n
    • hotspot
    • Wi-Fi Direct
    • Wi-Fi 802.11 a/b/g/n/ac
    • dual-band
    • WiFi Direct
    • hotspot
    GPS
    • panorama
    • Yes
    • with A-GPS
    • GLONASS
    • GALILEO
    • QZSS
    USB
    • microUSB 2.0
    • 2.0
    • Type-C 1.0 reversible connector (PowerDelivery 2.0)
    Bluetooth
    • 4.0
    • A2DP
    • EDR
    • 5.0
    • A2DP
    • LE
    Music and Audio
    Music and Audio
    SpecificationA4 DuoAquos R2 compact
    Radio
    • FM radio
    • No
    Others Unknown
    • 120 Hz -HDR10 -DCI-P3
    • Active noise cancellation with dedicated mic -Dolby Vision & Dolby Atmos -24-bit/192kHz audio
    Other features
    Other features
    SpecificationA4 DuoAquos R2 compact
    Dop
    • Sensors Accelerometer
    • proximity
    • Sensors Fingerprint (front-mounted)
    • accelerometer
    • gyro
    • proximity
    • compass - Fast battery charging - IP68 dust/water proof (up to 1.5m for 30 mins)

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