Sharp Aquos R2 compact vs Xiaomi Mi 4

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.

  • Weight

    Aquos R2 compact: 14 g lighter

    Aquos R2 compact:
    135 g
    Mi 4:
    149 g
  • Width

    Aquos R2 compact: 4.5 mm narrower

    Aquos R2 compact:
    64 mm
    Mi 4:
    68.5 mm
  • Screen diagonal

    Mi 4: 0.2 in smaller diagonal

    Aquos R2 compact:
    5.2 in
    Mi 4:
    5 in
  • Chipset

    Aquos R2 compact:
    Qualcomm SDM845 Snapdragon 845 (10 nm)
    Mi 4:
    Qualcomm MSM8974AC Snapdragon 801 (28 nm)
  • Height

    Aquos R2 compact: 8.2 mm shorter

    Aquos R2 compact:
    131 mm
    Mi 4:
    139.2 mm
  • Release year

    Aquos R2 compact:
    2018
    Mi 4:
    2014

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. Aquos R2 compact

    Height:
    131 mm
    Width:
    64 mm
    Depth:
    9.3 mm
  2. 2. Mi 4

    Height:
    139.2 mm +8.2 mm versus Aquos R2 compact
    Width:
    68.5 mm +4.5 mm versus Aquos R2 compact
    Depth:
    8.9 mm

Weight

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

  1. 1. Aquos R2 compact

    135 g

  2. 2. Mi 4

    149 g

    +14 g versus Aquos R2 compact

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. Aquos R2 compact

    Screen diagonal:
    5.2 in
    Aspect ratio (height:width):
    19:9
    Approximate rectangular screen area:
    67.5 cm²
  2. 2. Mi 4

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

Mi 4 has approximately 2.1% more rectangular screen area than Aquos R2 compact.

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.

Aquos R2 compact: Original memory entry

64 GB · 512GB 4GB

Mi 4: Original memory entry

16/64 GB · 2/3 GB RAM

Practical features

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

1. Aquos R2 compact

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

2. Mi 4

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. Aquos R2 compact

    2500 mAh

  2. 2. Mi 4

    3080 mAh

    +580 mAh versus Aquos R2 compact

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. Aquos R2 compact2. Mi 4

Everyday essentials
Everyday essentials — specifications for Aquos R2 compact, Mi 4.
SpecificationAquos R2 compactMi 4
Dimensions (HxWxD)
  • 131 Х 64 Х 9.3 mm
  • 139.2 Х 68.5 Х 8.9 mm
Weight
  • 135 g
  • 149 g
Technology
  • IGZO IPS LCD
  • IPS LCD
Screen size
  • 5.2" inch
  • 5" inch
Screen resolution
  • 1080 x 2280 px
  • 1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64 GB
  • 512GB 4GB
  • 16/64 GB
  • 2/3 GB RAM
Memory card support
  • microSD
  • up to 512 GB
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 2500 mAh
  • Non-removable Li-Ion
  • 3080 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 9.0 (Pie)
  • Android 4.4.3 (KitKat)
  • upgradable to 6.0.1 (Marshmallow); MIUI 10
Chipset
  • Qualcomm SDM845 Snapdragon 845 (10 nm)
  • Qualcomm MSM8974AC Snapdragon 801 (28 nm)
NFC
  • Yes
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Aquos R2 compact, Mi 4.
SpecificationAquos R2 compactMi 4
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 67.5 cm2
  • 68.9 cm2
Screen format
  • 19:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 80.5%
  • 72.3%
PPI /points per inch/
  • 485 PPI
  • 441 PPI
Screen protection
  • Corning Gorilla Glass 3
Unknown
Camera and Video
Camera and Video — specifications for Aquos R2 compact, Mi 4.
SpecificationAquos R2 compactMi 4
Rear camera, main
  • 22.6 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 22.6 MP
  • f/1.9
  • 22 mm
  • PDAF
  • OIS
  • 13 MP
  • f/1.8
  • 1/3''
  • 1.12µm
  • AF
Functions
  • LED flash
  • HDR
  • panorama
  • LED flash
  • panorama
  • HDR
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 8 MP
  • Single
Specifications
  • 8 MP
  • f/2.2
  • 23 mm
  • 8 MP
  • f/1.8
Performance

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

Performance — specifications for Aquos R2 compact, Mi 4.
SpecificationAquos R2 compactMi 4
Processor CPU
  • Octa-core (4x2.6 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver)
  • Quad-core 2.5 GHz Krait 400
Graphics processor GPU
  • Adreno 630
  • Adreno 330
Antutu 7 score * Unknown
  • 61632
GeekBench 4 Single Core * Unknown
  • 891
GeekBench 4 Multi-Core * Unknown
  • 1967
GeekBench 4 RenderScript * Unknown
  • 1997
General specs
General specs — specifications for Aquos R2 compact, Mi 4.
SpecificationAquos R2 compactMi 4
Release date
  • 2018
  • November
  • 2014
  • July
Colors
  • Smokey Green
  • Deep White
  • Pure Black
  • Black
  • White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 230 EUR
Battery life Unknown
  • Stand by time- Up to 280 h (3G)
Body build
  • Front glass
  • aluminum frame
  • plastic back
  • aluminum frame
  • plastic back
Communication and Connectivity
Communication and Connectivity — specifications for Aquos R2 compact, Mi 4.
SpecificationAquos R2 compactMi 4
SIM card
  • Nano-SIM
  • Micro-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA 2100 -4G - LTE
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - all versions CDMA 800 / 1900 - Telecom 3G model -3G - TD-SCDMA - 4G model HSDPA 850 / 900 / 1900 / 2100 - Unicom 3G model
  • Telecom 3G model CDMA2000 1xEV-DO - Telecom 3G model -4G - LTE band 38(2600)
  • 39(1900)
  • 40(2300) - 4G model
Speed
  • HSPA
  • LTE
  • HSPA 42.2/5.76 Mbps
  • LTE
  • EV-DO Rev.A 3.1 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • DLNA
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • QZSS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • 2.0
  • Type-C 1.0 reversible connector (PowerDelivery 2.0)
  • microUSB 2.0
  • USB Host
Bluetooth
  • 5.0
  • A2DP
  • LE
  • 4.0
  • A2DP
Harmful irradiation Unknown
  • SAR - 1.36 W/kg (head)
Music and Audio
Music and Audio — specifications for Aquos R2 compact, Mi 4.
SpecificationAquos R2 compactMi 4
Radio
  • No
  • FM radio
Others
  • 120 Hz -HDR10 -DCI-P3
  • Active noise cancellation with dedicated mic -Dolby Vision & Dolby Atmos -24-bit/192kHz audio
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Aquos R2 compact, Mi 4.
SpecificationAquos R2 compactMi 4
Dop
  • Sensors Fingerprint (front-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging - IP68 dust/water proof (up to 1.5m for 30 mins)
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass
  • barometer
  • Infrared port - Fast battery charging (Quick Charge 2.0)