Sendo X 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: 15 g lighter

    X:
    120 g
    N721:
    105 g
  • Width

    X: 7.2 mm narrower

    X:
    49 mm
    N721:
    56.2 mm
  • Screen diagonal

    X: 0.6 in smaller diagonal

    X:
    2.2 in
    N721:
    2.8 in
  • Depth

    N721: 8.8 mm thinner

    X:
    23 mm
    N721:
    14.2 mm
  • Height

    N721: 4 mm shorter

    X:
    110 mm
    N721:
    106 mm
  • Release year

    X:
    2003
    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. X

    Height:
    110 mm +4 mm versus N721
    Width:
    49 mm
    Depth:
    23 mm +8.8 mm versus N721
  2. 2. N721

    Height:
    106 mm
    Width:
    56.2 mm +7.2 mm versus X
    Depth:
    14.2 mm

Weight

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

  1. 1. X

    120 g

    +15 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.

At least two phones need compatible screen dimensions for a drawing.

  1. 1. X

    X: Screen geometry unavailable or conflicting.

  2. 2. N721

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

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.

X: Original memory entry

32 MB

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. X

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details MMC/SD

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. X

    1050 mAh

  2. 2. N721

    1100 mAh

    +50 mAh versus X

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. X2. N721

Everyday essentials
Everyday essentials — specifications for X, N721.
SpecificationXN721
Dimensions (HxWxD)
  • 110 Х 49 Х 23 mm
  • 106 Х 56.2 Х 14.2 mm
Weight
  • 120 g
  • 105 g
Technology
  • TFT
  • TFT
Screen size
  • 2.2" inch
  • 2.8" inch
Screen resolution
  • 176 x 220 px
  • 240 x 320 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32 MB
  • 150 MB
Memory card support
  • MMC/SD
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1050 mAh
  • Removable Li-Po
  • 1100 mAh
  • Removable Li-Ion
Operating system OS
  • Symbian 6.1
  • Series 60 v1.0 UI
  • Android OS
Chipset
  • TI OMAP 5910
Unknown
Headphone jack
  • No
  • Yes
Display
Display — specifications for X, N721.
SpecificationXN721
Touchscreen Unknown
  • touchscreen
Display colors
  • 65K
  • 256K
Screen area
  • 15.2 cm2
  • 24.3 cm2
Screen format Unknown
  • 4:3 (height:width)
Screen to body ratio
  • 28.3%
  • 40.8%
PPI /points per inch/
  • 0 PPI
  • 143 PPI
Camera and Video
Camera and Video — specifications for X, N721.
SpecificationXN721
Rear camera, main
  • 0.3 MP
  • Single
  • 2 MP
  • Single
Camera specs Unknown
  • 2 MP
Functions
  • LED flash
Unknown
Video
  • Yes
  • Yes
Front camera, selfie
  • 0 MP,
  • 0 MP,
Performance
Performance — specifications for X, N721.
SpecificationXN721
Processor CPU
  • 120 MHz ARM925T
Unknown
General specs
General specs — specifications for X, N721.
SpecificationXN721
Release date
  • 2003
  • Q4
  • 2011
Colors Unknown
  • Black
Battery life
  • Stand by time- Up to 170 h Talking time- Up to 7 h
  • Stand by time- Up to 250 h Talking time- Up to 4 h 10 min
Communication and Connectivity
Communication and Connectivity — specifications for X, N721.
SpecificationXN721
SIM card
  • Mini-SIM
  • Mini-SIM
Network Unknown
  • Show all network frequencies: -2G - GSM 900 / 1800
Speed Unknown
  • HSPA 7.2/0.384 Mbps
GPRS
  • Class 8
  • Yes
Edge
  • No
  • Yes
Wi-Fi
  • No
  • Wi-Fi 802.11 b/g
GPS
  • No
  • Yes
  • with A-GPS
USB
  • Proprietary
  • microUSB 2.0
Bluetooth
  • 1.1
  • 2.1
Harmful irradiation Unknown
  • SAR EU - 0.73 W/kg (head)
Music and Audio
Music and Audio — specifications for X, N721.
SpecificationXN721
Radio
  • No
Unknown
Other features
Other features — specifications for X, N721.
SpecificationXN721
Dop
  • Infrared port - MP4/MP3 player -Sync ML
  • Sensors Accelerometer MP4/H.264 player -MP3/WAV/eAAC+ player -Organizer -Voice memo -Predictive text input