LG K10 vs vivo X21 UD

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

    K10:
    LCD
    X21 UD:
    OLED
  • Weight

    K10: 14.2 g lighter

    K10:
    142 g
    X21 UD:
    156.2 g
  • Screen diagonal

    K10: 0.98 in smaller diagonal

    K10:
    5.3 in
    X21 UD:
    6.28 in
  • Rear camera layout

    K10:
    Single
    X21 UD:
    Dual
  • Depth

    X21 UD: 1.4 mm thinner

    K10:
    8.8 mm
    X21 UD:
    7.4 mm
  • Height

    K10: 8.5 mm shorter

    K10:
    146 mm
    X21 UD:
    154.5 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. K10

    Height:
    146 mm
    Width:
    74.8 mm
    Depth:
    8.8 mm +1.4 mm versus X21 UD
  2. 2. X21 UD

    Height:
    154.5 mm +8.5 mm versus K10
    Width:
    74.8 mm
    Depth:
    7.4 mm

Weight

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

  1. 1. K10

    142 g

  2. 2. X21 UD

    156.2 g

    +14.2 g versus K10

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. K10

    Screen diagonal:
    5.3 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    77.4 cm²
  2. 2. X21 UD

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

X21 UD has approximately 27.1% more rectangular screen area than K10.

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 K10, X21 UD, compared at the same storage capacity.
StorageK10X21 UD
128 GB Unknown 6 GB RAM
K10: Original memory entry

16 GB · 1 GB RAM - K430DSF/ 1.5 GB RAM - K420N · K430DS/ 2 GB RAM - K430DSY

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. K10

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

2. X21 UD

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (uses SIM 2 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. K10

    2300 mAh

  2. 2. X21 UD

    3200 mAh

    +900 mAh versus K10

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. K102. X21 UD

Everyday essentials
Everyday essentials — specifications for K10, X21 UD.
SpecificationK10X21 UD
Dimensions (HxWxD)
  • 146 Х 74.8 Х 8.8 mm
  • 154.5 Х 74.8 Х 7.4 mm
Weight
  • 142 g
  • 156.2 g
Technology
  • IPS LCD
  • Super AMOLED
Screen size
  • 5.3" inch
  • 6.28" inch
Screen resolution
  • 720 x 1280 px
  • 1080 x 2280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16 GB
  • 1 GB RAM - K430DSF/ 1.5 GB RAM - K420N
  • K430DS/ 2 GB RAM - K430DSY
  • 128 GB
  • 6 GB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD
  • up to 256 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 2300 mAh
  • Removable Li-Ion
  • 3200 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 5.1.1 (Lollipop) or Android 6.0 (Marshmallow)
  • Android 8.1 (Oreo); Funtouch 4
Chipset
  • Qualcomm MSM8916 Snapdragon 410 (28 nm) K420N -Mediatek MT6753 K430DS
  • K430DSF
  • K430DSY
  • Qualcomm SDM660 Snapdragon 660 (14 nm)
NFC
  • Yes
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for K10, X21 UD.
SpecificationK10X21 UD
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 77.4 cm2
  • 98.4 cm2
Screen format
  • 16:9 (height:width)
  • 19:9 (height:width)
Screen to body ratio
  • 70.9%
  • 85.2%
PPI /points per inch/
  • 277 PPI
  • 402 PPI
Screen protection
  • Corning Gorilla Glass 3
Unknown
Camera and Video
Camera and Video — specifications for K10, X21 UD.
SpecificationK10X21 UD
Rear camera, main
  • 13 MP
  • Single
  • 12 MP
  • Dual
Camera specs
  • 13 MP
  • f/2.2
  • AF (LTE model) -8 MP
  • AF (3G model)
  • 12 MP
  • f/1.8
  • 1/2.55''
  • 1.4µm
  • dual pixel PDAF -5 MP
  • f/2.4
  • depth sensor
Functions
  • LED flash
  • panorama
  • LED flash
  • HDR
  • panorama
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 5 MP
  • Single
  • 12 MP
  • Single
Specifications
  • 5 MP
  • f/2.4
  • or 8 MP
  • 12 MP
  • f/2.0
Performance

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

Performance — specifications for K10, X21 UD.
SpecificationK10X21 UD
Processor CPU
  • Quad-core 1.2 GHz Cortex-A53 K420N -Octa-core 1.14 GHz Cortex-A53 K430DS
  • K430DSF
  • K430DSY
  • Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260)
Graphics processor GPU
  • Adreno 306 K420N -Mali-T720MP3 K430DS
  • K430DSF
  • K430DSY
  • Adreno 512
Antutu 7 score *
  • 23981
  • 143592
GeekBench 4 Single Core *
  • 567
Unknown
GeekBench 4 Multi-Core *
  • 1732
Unknown
GeekBench 4 RenderScript *
  • 1508
Unknown
General specs
General specs — specifications for K10, X21 UD.
SpecificationK10X21 UD
Release date
  • 2016
  • January
  • 2018
  • March
Colors
  • White
  • Indigo
  • Gold
  • Black
  • Ruby Red
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 170 EUR
  • 550 EUR
Body build
  • plastic body
  • Front glass
  • aluminum body
Communication and Connectivity
Communication and Connectivity — specifications for K10, X21 UD.
SpecificationK10X21 UD
SIM card
  • Single SIM (Nano-SIM)Dual SIM (Nano-SIM
  • dual stand-by)
  • Hybrid Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) -3G - HSDPA 850 / 900 / 1900 / 2100 - K420N
  • K430DSF
  • K430DS -4G - LTE band 1(2100)
  • 3(1800)
  • 7(2600)
  • 8(900)
  • 20(800) - K420N LTE band 3(1800)
  • 20(800) - K430DS LTE 700 / 1800 / 2600 - K430DSF
  • 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)
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 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 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • Yes
  • with A-GPS
  • GLONASS
USB
  • microUSB 2.0
  • microUSB 2.0
  • USB On-The-Go
Bluetooth
  • 4.1
  • A2DP
  • LE
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for K10, X21 UD.
SpecificationK10X21 UD
Radio
  • FM radio
  • RDS
  • FM radio
Others Unknown
  • 32-bit/192kHz audio -Active noise cancellation with dedicated mic
Other features
Other features — specifications for K10, X21 UD.
SpecificationK10X21 UD
Dop
  • Sensors Accelerometer
  • proximity - Versions: K420N (Europe); K430DS (Russia); K430DSF (LATAM); K430DSY (Taiwan) Also known as LG K10 Dual SIM with dual-SIM card slots
  • Sensors Fingerprint (under display)
  • accelerometer
  • proximity
  • compass - Fast battery charging