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Allview A4 Duo vs Sharp Aquos R2

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.

  • WeightA4 Duo: 70.4 g lighterA4 Duo: 110.6 g · Aquos R2: 181 g
  • WidthA4 Duo: 10.8 mm narrowerA4 Duo: 63.2 mm · Aquos R2: 74 mm
  • Screen diagonalA4 Duo: 2.5 in smaller diagonalA4 Duo: 3.5 in · Aquos R2: 6 in
  • Rear camera layoutSingle / DualA4 Duo: Single · Aquos R2: Dual
  • DepthAquos R2: 3 mm thinnerAquos R2: 9 mm · A4 Duo: 12 mm
  • HeightA4 Duo: 39.9 mm shorterA4 Duo: 116.1 mm · Aquos R2: 156 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.

Front
A4 Duo: 116.1 × 63.2 mm 1 Aquos R2: 156 × 74 mm 2
Side
A4 Duo: 116.1 × 12 mm 1 Aquos R2: 156 × 9 mm 2
  1. 1. A4 Duo
    Height
    116.1 mm
    Width
    63.2 mm
    Depth
    12 mm+3 mm versus Aquos R2
    Weight
    110.6 g
  2. 2. Aquos R2
    Height
    156 mm+39.9 mm versus A4 Duo
    Width
    74 mm+10.8 mm versus A4 Duo
    Depth
    9 mm
    Weight
    181 g
Weight

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

  1. 1. A4 Duo110.6 g
  2. 2. Aquos R2181 g

    +70.4 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: 6 in, 19:9, About 89.9 cm² rectangular area 2
  1. 1. A4 Duo 3.5 in · 3:2 About 36.5 cm² rectangular area
  2. 2. Aquos R2 6 in · 19:9 About 89.9 cm² rectangular area

Aquos R2 has approximately 146.3% 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: 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

NFC
Unknown
Headphone jack
Yes
Memory card support
See details microSD · up to 512 GB (uses SIM 2 slot)

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 R23130 mAh

    +1930 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

Everyday essentials
Everyday essentials
SpecificationA4 DuoAquos R2
Dimensions (HxWxD)
  • 116.1 Х 63.2 Х 12 mm
  • 156 Х 74 Х 9 mm
Weight
  • 110.6 g
  • 181 g
Technology
  • TFT
  • IGZO IPS LCD
Screen size
  • 3.5" inch
  • 6" inch
Screen resolution
  • 320 x 480 px
  • 1440 x 3040 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 (uses SIM 2 slot)
BatteryCapacity is not battery life. No endurance test is implied.
  • 1200 mAh
  • Removable Li-Ion
  • 3130 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 4.2 (Jelly Bean)
  • Android 8.0 (Oreo)
Chipset Unknown
  • Qualcomm SDM845 Snapdragon 845 (10 nm)
NFC
  • Super AMOLED
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display
SpecificationA4 DuoAquos R2
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • Super AMOLED
  • 16M
Screen area
  • 36.5 cm2
  • 89.9 cm2
Screen format
  • 3:2 (height:width)
  • 19:9 (height:width)
Screen to body ratio
  • 149.7 g
  • 77.8%
PPI /points per inch/
  • 165 PPI
  • 561 PPI
Camera and Video
Camera and Video
SpecificationA4 DuoAquos R2
Rear camera, main
  • 2 MP
  • Single
  • 22.6 MP
  • Dual
Camera specs
  • 2 MP
  • 22.6 MP
  • PDAF -16.3 MP
  • PDAF (for video recording only)
Functions Unknown
  • LED flash
  • HDR
  • panorama
Video
  • Yes
  • 2160p@30fps (dedicated video camera)
Front camera, selfie
  • 0 MP,
  • 16.3 MP
  • Single
Specifications
  • Super AMOLED
  • 16.3 MP
Performance
Performance
SpecificationA4 DuoAquos R2
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
  • 265822
General specs
General specs
SpecificationA4 DuoAquos R2
Release date
  • 2013
  • November
  • 2018
  • May
Colors
  • Black
  • Black
  • White
Historical recorded priceLegacy catalogue value; date unknown. Not a current offer.
  • 80 EUR
  • 350 EUR
Battery life
  • Stand by time- Up to 200 h Talking time- Up to 8 h 20 min
Unknown
Communication and Connectivity
Communication and Connectivity
SpecificationA4 DuoAquos R2
SIM card
  • Dual SIM (dual stand-by)
  • Hybrid Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 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
USB
  • microUSB 2.0
  • 2.0
  • Type-C 1.0 reversible connector
Bluetooth
  • 4.0
  • A2DP
  • EDR
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio
SpecificationA4 DuoAquos R2
Radio
  • FM radio
  • No
Others Unknown
  • Active noise cancellation with dedicated mic -Dolby Vision & Dolby Atmos
Other features
Other features
SpecificationA4 DuoAquos R2
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Fingerprint (front-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging - IPX5/IPX8/IP6X