vivo X21i vs Wiko Robby

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.

  • Display technology

    OLED versus LCD

    X21i:
    OLED
    Robby:
    LCD
  • Weight

    X21i: 26 g lighter

    X21i:
    159 g
    Robby:
    185 g
  • Width

    X21i: 4.1 mm narrower

    X21i:
    75 mm
    Robby:
    79.1 mm
  • Screen diagonal

    Robby: 0.78 in smaller diagonal

    X21i:
    6.28 in
    Robby:
    5.5 in
  • Chipset

    X21i:
    Mediatek MT6771 Helio P60 (12 nm)
    Robby:
    Mediatek MT6580M (28 nm)
  • Rear camera layout

    X21i:
    Dual
    Robby:
    Single

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. X21i

    Height:
    154.4 mm
    Width:
    75 mm
    Depth:
    7 mm
  2. 2. Robby

    Height:
    155 mm
    Width:
    79.1 mm +4.1 mm versus X21i
    Depth:
    10 mm +3 mm versus X21i

Weight

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

  1. 1. X21i

    159 g

  2. 2. Robby

    185 g

    +26 g versus X21i

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. X21i

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

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

X21i has approximately 18% more rectangular screen area than Robby.

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 X21i, Robby, compared at the same storage capacity.
StorageX21iRobby
16 GB Unknown 1 GB RAM
X21i: Original memory entry

128 GB · 4 GB RAM 64 GB · 6 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. X21i

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

2. Robby

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 64 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. X21i

    3425 mAh

    +925 mAh versus Robby

  2. 2. Robby

    2500 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. X21i2. Robby

Everyday essentials
Everyday essentials — specifications for X21i, Robby.
SpecificationX21iRobby
Dimensions (HxWxD)
  • 154.4 Х 75 Х 7 mm
  • 155 Х 79.1 Х 10 mm
Weight
  • 159 g
  • 185 g
Technology
  • Super AMOLED
  • IPS LCD
Screen size
  • 6.28" inch
  • 5.5" inch
Screen resolution
  • 1080 x 2280 px
  • 720 x 1280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128 GB
  • 4 GB RAM 64 GB
  • 6 GB RAM
  • 16 GB
  • 1 GB RAM
Memory card support
  • microSD
  • up to 256 GB (uses SIM 2 slot)
  • microSD
  • up to 64 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 3425 mAh
  • Non-removable Li-Ion
  • 2500 mAh
  • Removable Li-Po
Operating system OS
  • Android 8.1 (Oreo); Funtouch 4
  • Android 6.0.1 (Marshmallow)
Chipset
  • Mediatek MT6771 Helio P60 (12 nm)
  • Mediatek MT6580M (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for X21i, Robby.
SpecificationX21iRobby
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 98.4 cm2
  • 83.4 cm2
Screen format
  • 19:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 85.0%
  • 68.0%
PPI /points per inch/
  • 402 PPI
  • 267 PPI
Camera and Video
Camera and Video — specifications for X21i, Robby.
SpecificationX21iRobby
Rear camera, main
  • 12 MP
  • Dual
  • 8 MP
  • Single
Camera specs
  • 12 MP
  • f/1.8
  • 1/2.55''
  • 1.4µm
  • dual pixel PDAF -5 MP
  • f/2.0
  • depth sensor
  • 8 MP
  • f/2.0
  • 1/4''
  • 1.12µm
Functions
  • LED flash
  • HDR
  • panorama
  • LED flash
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 24 MP
  • Single
  • 5 MP
  • Single
Specifications
  • 24 MP
  • 5 MP
  • f/2.4
  • 1/5''
  • 1.1µm
Performance

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

Performance — specifications for X21i, Robby.
SpecificationX21iRobby
Processor CPU
  • Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
  • Quad-core 1.3 GHz Cortex-A7
Graphics processor GPU
  • Mali-G72 MP3
  • Mali-400MP2
Antutu 7 score *
  • 130256
  • 34192
GeekBench 4 Single Core *
  • 1497
  • 405
GeekBench 4 Multi-Core *
  • 5759
  • 1112
General specs
General specs — specifications for X21i, Robby.
SpecificationX21iRobby
Release date
  • 2018
  • May
  • 2016
  • February
Colors
  • Black
  • Aurora White
  • Ruby Red
  • Night Purple
  • Space Grey
  • Gold
  • Bleen
  • Rose Gold
  • Lime
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 430 EUR
Unknown
Battery life Unknown
  • Stand by time- Up to 270 h (2G) / Up to 270 h (3G) Talking time- Up to 17 h (2G) / Up to 15 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for X21i, Robby.
SpecificationX21iRobby
SIM card
  • Hybrid Dual SIM (Nano-SIM
  • dual stand-by)
  • Dual SIM (Micro-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 8(900)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Speed
  • HSPA
  • LTE
  • HSPA 21.1/5.76 Mbps
GPRS
  • Yes
  • Up to 107 kbps
Edge
  • Yes
  • Up to 296 kbps
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • USB On-The-Go
  • microUSB 2.0
  • USB Host
Bluetooth
  • 5.0
  • A2DP
  • LE
  • 4.0
  • A2DP
Harmful irradiation Unknown
  • SAR EU - 0.30 W/kg (head) 0.46 W/kg (body)
Music and Audio
Music and Audio — specifications for X21i, Robby.
SpecificationX21iRobby
Radio
  • FM radio
  • FM radio
Others
  • 32-bit/192kHz audio -Active noise cancellation with dedicated mic
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for X21i, Robby.
SpecificationX21iRobby
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass - Fast battery charging
  • Sensors Accelerometer
  • proximity - For Europe