vivo X21 UD vs ZTE E N72

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

    E N72: 26.2 g lighter

    X21 UD:
    156.2 g
    E N72:
    130 g
  • Width

    E N72: 8.8 mm narrower

    X21 UD:
    74.8 mm
    E N72:
    66 mm
  • Screen diagonal

    E N72: 3.78 in smaller diagonal

    X21 UD:
    6.28 in
    E N72:
    2.5 in
  • Rear camera layout

    X21 UD:
    Dual
    E N72:
    Single
  • Depth

    X21 UD: 4.5 mm thinner

    X21 UD:
    7.4 mm
    E N72:
    11.9 mm
  • Height

    E N72: 40.5 mm shorter

    X21 UD:
    154.5 mm
    E N72:
    114 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.

  1. 1. X21 UD

    Height:
    154.5 mm +40.5 mm versus E N72
    Width:
    74.8 mm +8.8 mm versus E N72
    Depth:
    7.4 mm
  2. 2. E N72

    Height:
    114 mm
    Width:
    66 mm
    Depth:
    11.9 mm +4.5 mm versus X21 UD

Weight

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

  1. 1. X21 UD

    156.2 g

    +26.2 g versus E N72

  2. 2. E N72

    130 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. X21 UD

    Screen diagonal:
    6.28 in
    Aspect ratio (height:width):
    19:9
    Approximate rectangular screen area:
    98.4 cm²
  2. 2. E N72

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

X21 UD has approximately 408.6% more rectangular screen area than E N72.

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 X21 UD, E N72, compared at the same storage capacity.
StorageX21 UDE N72
128 GB 6 GB RAM Unknown
E N72: Original memory entry

100 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. X21 UD

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (uses SIM 2 slot)

2. E N72

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details microSD · up to 8 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. X21 UD

    3200 mAh

    +1900 mAh versus E N72

  2. 2. E N72

    1300 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. X21 UD2. E N72

Everyday essentials
Everyday essentials — specifications for X21 UD, E N72.
SpecificationX21 UDE N72
Dimensions (HxWxD)
  • 154.5 Х 74.8 Х 7.4 mm
  • 114 Х 66 Х 11.9 mm
Weight
  • 156.2 g
  • 130 g
Technology
  • Super AMOLED
  • TFT
Screen size
  • 6.28" inch
  • 2.5" inch
Screen resolution
  • 1080 x 2280 px
  • 320 x 240 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128 GB
  • 6 GB RAM
  • 100 MB
Memory card support
  • microSD
  • up to 256 GB (uses SIM 2 slot)
  • microSD
  • up to 8 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 3200 mAh
  • Non-removable Li-Ion
  • 1300 mAh
  • Removable Li-Ion
Operating system OS
  • Android 8.1 (Oreo); Funtouch 4
  • Microsoft Windows Mobile Professional
Chipset
  • Qualcomm SDM660 Snapdragon 660 (14 nm)
Unknown
Headphone jack
  • Yes
  • No
Display
Display — specifications for X21 UD, E N72.
SpecificationX21 UDE N72
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors
  • 16M
  • 256K
Screen area
  • 98.4 cm2
  • 19.4 cm2
Screen format
  • 19:9 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 85.2%
  • 25.7%
PPI /points per inch/
  • 402 PPI
  • 160 PPI
Camera and Video
Camera and Video — specifications for X21 UD, E N72.
SpecificationX21 UDE N72
Rear camera, main
  • 12 MP
  • Dual
  • 3.15 MP
  • Single
Camera specs
  • 12 MP
  • f/1.8
  • 1/2.55''
  • 1.4µm
  • dual pixel PDAF -5 MP
  • f/2.4
  • depth sensor
  • 3.15 MP
  • AF
Functions
  • LED flash
  • HDR
  • panorama
  • LED flash
Video
  • 1080p@30fps
  • Yes
Front camera, selfie
  • 12 MP
  • Single
  • 0 MP,
Specifications
  • 12 MP
  • f/2.0
Unknown
Performance

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

Performance — specifications for X21 UD, E N72.
SpecificationX21 UDE N72
Processor CPU
  • Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260)
Unknown
Graphics processor GPU
  • Adreno 512
Unknown
Antutu 7 score *
  • 143592
Unknown
General specs
General specs — specifications for X21 UD, E N72.
SpecificationX21 UDE N72
Release date
  • 2018
  • March
  • 2010
  • August
Colors
  • Black
  • Ruby Red
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 550 EUR
Unknown
Battery life Unknown
  • Stand by time- Up to 200 h Talking time- Up to 4 h
Body build
  • Front glass
  • aluminum body
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for X21 UD, E N72.
SpecificationX21 UDE N72
SIM card
  • Hybrid Dual SIM (Nano-SIM
  • dual stand-by)
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
  • 2(1900)
  • 3(1800)
  • 5(850)
  • 8(900)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
  • Show all network frequencies: -2G - CDMA 800 / 1900
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
  • HSPA
GPRS
  • Yes
  • No
Edge
  • Yes
  • No
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
  • No
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • No
USB
  • microUSB 2.0
  • USB On-The-Go
  • microUSB 2.0
Bluetooth
  • 5.0
  • A2DP
  • LE
  • 2.0
  • A2DP
Music and Audio
Music and Audio — specifications for X21 UD, E N72.
SpecificationX21 UDE N72
Radio
  • FM radio
  • No
Others
  • 32-bit/192kHz audio -Active noise cancellation with dedicated mic
Unknown
Other features
Other features — specifications for X21 UD, E N72.
SpecificationX21 UDE N72
Dop
  • Sensors Fingerprint (under display)
  • accelerometer
  • proximity
  • compass - Fast battery charging
  • MP3/WMA/eAAC+ player -MP4/H.264 player -Document viewer -Organizer -Voice memo -Predictive text input