Haier G51 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.

  • Weight

    Aquos R2 compact: 20 g lighter

    G51:
    155 g
    Aquos R2 compact:
    135 g
  • Width

    Aquos R2 compact: 8.9 mm narrower

    G51:
    72.9 mm
    Aquos R2 compact:
    64 mm
  • Screen diagonal

    G51: 0.2 in smaller diagonal

    G51:
    5 in
    Aquos R2 compact:
    5.2 in
  • Chipset

    G51:
    Mediatek MT6737M (28 nm)
    Aquos R2 compact:
    Qualcomm SDM845 Snapdragon 845 (10 nm)
  • Height

    Aquos R2 compact: 11.6 mm shorter

    G51:
    142.6 mm
    Aquos R2 compact:
    131 mm
  • Release year

    G51:
    2017
    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.

  1. 1. G51

    Height:
    142.6 mm +11.6 mm versus Aquos R2 compact
    Width:
    72.9 mm +8.9 mm versus Aquos R2 compact
    Depth:
    9.1 mm
  2. 2. Aquos R2 compact

    Height:
    131 mm
    Width:
    64 mm
    Depth:
    9.3 mm

Weight

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

  1. 1. G51

    155 g

    +20 g versus Aquos R2 compact

  2. 2. Aquos R2 compact

    135 g

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. G51

    Screen diagonal:
    5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    68.9 cm²
  2. 2. Aquos R2 compact

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

G51 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.

Recorded RAM for G51, Aquos R2 compact, compared at the same storage capacity.
StorageG51Aquos R2 compact
8 GB 1 GB RAM Unknown
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. G51

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

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 battery capacity

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

  1. 1. G51

    2000 mAh

  2. 2. Aquos R2 compact

    2500 mAh

    +500 mAh versus G51

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. G512. Aquos R2 compact

Everyday essentials
Everyday essentials — specifications for G51, Aquos R2 compact.
SpecificationG51Aquos R2 compact
Dimensions (HxWxD)
  • 142.6 Х 72.9 Х 9.1 mm
  • 131 Х 64 Х 9.3 mm
Weight
  • 155 g
  • 135 g
Technology
  • IPS LCD
  • IGZO IPS LCD
Screen size
  • 5" inch
  • 5.2" inch
Screen resolution
  • 480 x 854 px
  • 1080 x 2280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 8 GB
  • 1 GB RAM
  • 64 GB
  • 512GB 4GB
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD
  • up to 512 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 2000 mAh
  • Removable Li-Ion
  • 2500 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 7.0 (Nougat)
  • Android 9.0 (Pie)
Chipset
  • Mediatek MT6737M (28 nm)
  • Qualcomm SDM845 Snapdragon 845 (10 nm)
NFC Unknown
  • Yes
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for G51, Aquos R2 compact.
SpecificationG51Aquos R2 compact
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 68.9 cm2
  • 67.5 cm2
Screen format
  • 16:9 (height:width)
  • 19:9 (height:width)
Screen to body ratio
  • 66.3%
  • 80.5%
PPI /points per inch/
  • 196 PPI
  • 485 PPI
Screen protection
  • Scratch-resistant glass
  • Corning Gorilla Glass 3
Camera and Video
Camera and Video — specifications for G51, Aquos R2 compact.
SpecificationG51Aquos R2 compact
Rear camera, main
  • 5 MP
  • Single
  • 22.6 MP
  • Single
Camera specs
  • 5 MP
  • AF
  • f/2.0
  • 22.6 MP
  • f/1.9
  • 22 mm
  • PDAF
  • OIS
Functions
  • Dual-LED dual-tone flash
  • LED flash
  • HDR
  • panorama
Video
  • 720p@30fps
  • 1080p@30fps
Front camera, selfie
  • 5 MP
  • Single
  • 8 MP
  • Single
Specifications
  • 5 MP
  • f/2.4
  • 8 MP
  • f/2.2
  • 23 mm
Performance

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

Performance — specifications for G51, Aquos R2 compact.
SpecificationG51Aquos R2 compact
Processor CPU
  • Quad-core 1.25 GHz Cortex-A53
  • Octa-core (4x2.6 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver)
Graphics processor GPU
  • Mali-T720MP1
  • Adreno 630
Antutu 7 score *
  • 29322
Unknown
General specs
General specs — specifications for G51, Aquos R2 compact.
SpecificationG51Aquos R2 compact
Release date
  • 2017
  • 2018
  • November
Colors
  • Black
  • Gold
  • White
  • Blue
  • Smokey Green
  • Deep White
  • Pure Black
Body build Unknown
  • Front glass
  • aluminum frame
  • plastic back
Communication and Connectivity
Communication and Connectivity — specifications for G51, Aquos R2 compact.
SpecificationG51Aquos R2 compact
SIM card
  • Dual SIM (Micro-SIM
  • dual stand-by)
  • Nano-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 900 / 2100 HSDPA 850 / 1900 -4G - LTE band 1(2100)
  • 3(1800)
  • 7(2600)
  • 8(900)
  • 20(800) LTE band 2(1900)
  • 4(1700/2100)
  • 5(850)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA 2100 -4G - LTE
Speed
  • HSPA 42.2/11.5 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA
  • LTE
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • 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
  • LE
  • 5.0
  • A2DP
  • LE
Harmful irradiation
  • SAR EU - 0.71 W/kg (head) 1.11 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for G51, Aquos R2 compact.
SpecificationG51Aquos 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 — specifications for G51, Aquos R2 compact.
SpecificationG51Aquos 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)