Sharp Aquos R2 compact vs ZTE N721

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

    N721: 30 g lighter

    Aquos R2 compact:
    135 g
    N721:
    105 g
  • Width

    N721: 7.8 mm narrower

    Aquos R2 compact:
    64 mm
    N721:
    56.2 mm
  • Screen diagonal

    N721: 2.4 in smaller diagonal

    Aquos R2 compact:
    5.2 in
    N721:
    2.8 in
  • Depth

    Aquos R2 compact: 4.9 mm thinner

    Aquos R2 compact:
    9.3 mm
    N721:
    14.2 mm
  • Height

    N721: 25 mm shorter

    Aquos R2 compact:
    131 mm
    N721:
    106 mm
  • Release year

    Aquos R2 compact:
    2018
    N721:
    2011

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 +25 mm versus N721
    Width:
    64 mm +7.8 mm versus N721
    Depth:
    9.3 mm
  2. 2. N721

    Height:
    106 mm
    Width:
    56.2 mm
    Depth:
    14.2 mm +4.9 mm versus Aquos R2 compact

Weight

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

  1. 1. Aquos R2 compact

    135 g

    +30 g versus N721

  2. 2. N721

    105 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. Aquos R2 compact

    Screen diagonal:
    5.2 in
    Aspect ratio (height:width):
    19:9
    Approximate rectangular screen area:
    67.5 cm²
  2. 2. N721

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²

Aquos R2 compact has approximately 178% more rectangular screen area than N721.

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

N721: Original memory entry

150 MB

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. N721

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. Aquos R2 compact

    2500 mAh

    +1400 mAh versus N721

  2. 2. N721

    1100 mAh

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. N721

Everyday essentials
Everyday essentials — specifications for Aquos R2 compact, N721.
SpecificationAquos R2 compactN721
Dimensions (HxWxD)
  • 131 Х 64 Х 9.3 mm
  • 106 Х 56.2 Х 14.2 mm
Weight
  • 135 g
  • 105 g
Technology
  • IGZO IPS LCD
  • TFT
Screen size
  • 5.2" inch
  • 2.8" inch
Screen resolution
  • 1080 x 2280 px
  • 240 x 320 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64 GB
  • 512GB 4GB
  • 150 MB
Memory card support
  • microSD
  • up to 512 GB
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 2500 mAh
  • Non-removable Li-Ion
  • 1100 mAh
  • Removable Li-Ion
Operating system OS
  • Android 9.0 (Pie)
  • Android OS
Chipset
  • Qualcomm SDM845 Snapdragon 845 (10 nm)
Unknown
NFC
  • Yes
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Aquos R2 compact, N721.
SpecificationAquos R2 compactN721
Touchscreen
  • capacitive touchscreen
  • touchscreen
Display colors
  • 16M
  • 256K
Screen area
  • 67.5 cm2
  • 24.3 cm2
Screen format
  • 19:9 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 80.5%
  • 40.8%
PPI /points per inch/
  • 485 PPI
  • 143 PPI
Screen protection
  • Corning Gorilla Glass 3
Unknown
Camera and Video
Camera and Video — specifications for Aquos R2 compact, N721.
SpecificationAquos R2 compactN721
Rear camera, main
  • 22.6 MP
  • Single
  • 2 MP
  • Single
Camera specs
  • 22.6 MP
  • f/1.9
  • 22 mm
  • PDAF
  • OIS
  • 2 MP
Functions
  • LED flash
  • HDR
  • panorama
Unknown
Video
  • 1080p@30fps
  • Yes
Front camera, selfie
  • 8 MP
  • Single
  • 0 MP,
Specifications
  • 8 MP
  • f/2.2
  • 23 mm
Unknown
Performance
Performance — specifications for Aquos R2 compact, N721.
SpecificationAquos R2 compactN721
Processor CPU
  • Octa-core (4x2.6 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver)
Unknown
Graphics processor GPU
  • Adreno 630
Unknown
General specs
General specs — specifications for Aquos R2 compact, N721.
SpecificationAquos R2 compactN721
Release date
  • 2018
  • November
  • 2011
Colors
  • Smokey Green
  • Deep White
  • Pure Black
  • Black
Battery life Unknown
  • Stand by time- Up to 250 h Talking time- Up to 4 h 10 min
Body build
  • Front glass
  • aluminum frame
  • plastic back
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Aquos R2 compact, N721.
SpecificationAquos R2 compactN721
SIM card
  • Nano-SIM
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA 2100 -4G - LTE
  • Show all network frequencies: -2G - GSM 900 / 1800
Speed
  • HSPA
  • LTE
  • HSPA 7.2/0.384 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 b/g
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • QZSS
  • Yes
  • with A-GPS
USB
  • 2.0
  • Type-C 1.0 reversible connector (PowerDelivery 2.0)
  • microUSB 2.0
Bluetooth
  • 5.0
  • A2DP
  • LE
  • 2.1
Harmful irradiation Unknown
  • SAR EU - 0.73 W/kg (head)
Music and Audio
Music and Audio — specifications for Aquos R2 compact, N721.
SpecificationAquos R2 compactN721
Radio
  • No
Unknown
Others
  • 120 Hz -HDR10 -DCI-P3
  • Active noise cancellation with dedicated mic -Dolby Vision & Dolby Atmos -24-bit/192kHz audio
Unknown
Other features
Other features — specifications for Aquos R2 compact, N721.
SpecificationAquos R2 compactN721
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 MP4/H.264 player -MP3/WAV/eAAC+ player -Organizer -Voice memo -Predictive text input