LG K50 vs vivo X21

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

    K50:
    LCD
    X21:
    OLED
  • Weight

    X21: 13.8 g lighter

    K50:
    170 g
    X21:
    156.2 g
  • Width

    X21: 2.2 mm narrower

    K50:
    77 mm
    X21:
    74.8 mm
  • Chipset

    K50:
    Mediatek MT6762 Helio P22 (12 nm)
    X21:
    Qualcomm SDM660 Snapdragon 660 (14 nm)
  • Depth

    X21: 1.3 mm thinner

    K50:
    8.7 mm
    X21:
    7.4 mm
  • Height

    X21: 6.8 mm shorter

    K50:
    161.3 mm
    X21:
    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. K50

    Height:
    161.3 mm +6.8 mm versus X21
    Width:
    77 mm +2.2 mm versus X21
    Depth:
    8.7 mm +1.3 mm versus X21
  2. 2. X21

    Height:
    154.5 mm
    Width:
    74.8 mm
    Depth:
    7.4 mm

Weight

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

  1. 1. K50

    170 g

    +13.8 g versus X21

  2. 2. X21

    156.2 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. K50

    Screen diagonal:
    6.26 in
    Aspect ratio (height:width):
    19:9
    Approximate rectangular screen area:
    97.8 cm²
  2. 2. X21

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

Recorded RAM for K50, X21, compared at the same storage capacity.
StorageK50X21
32 GB 3 GB RAM Not recorded
64 GB Not recorded 6 GB RAM
128 GB Not recorded 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. K50

NFC:
See details Yes (market/region dependent)
Headphone jack:
Yes
Memory card support:
See details microSD · up to 1 TB (dedicated slot)

2. X21

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. K50

    3500 mAh

    +300 mAh versus X21

  2. 2. X21

    3200 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. K502. X21

Everyday essentials
Everyday essentials — specifications for K50, X21.
SpecificationK50X21
Dimensions (HxWxD)
  • 161.3 Х 77 Х 8.7 mm
  • 154.5 Х 74.8 Х 7.4 mm
Weight
  • 170 g
  • 156.2 g
Technology
  • IPS LCD
  • Super AMOLED
Screen size
  • 6.26" inch
  • 6.28" inch
Screen resolution
  • 720 x 1520 px
  • 1080 x 2280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32 GB
  • 3 GB RAM
  • 64/128 GB
  • 6 GB RAM
Memory card support
  • microSD
  • up to 1 TB (dedicated slot)
  • microSD
  • up to 256 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 3500 mAh
  • Non-removable Li-Po
  • 3200 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 9.0 (Pie)
  • Android 8.1 (Oreo); Funtouch 4
Chipset
  • Mediatek MT6762 Helio P22 (12 nm)
  • Qualcomm SDM660 Snapdragon 660 (14 nm)
NFC
  • Yes (market/region dependent)
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for K50, X21.
SpecificationK50X21
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 97.8 cm2
  • 98.4 cm2
Screen format
  • 19:9 (height:width)
  • 19:9 (height:width)
Screen to body ratio
  • 78.8%
  • 85.2%
PPI /points per inch/
  • 269 PPI
  • 402 PPI
Camera and Video
Camera and Video — specifications for K50, X21.
SpecificationK50X21
Rear camera, main
  • 13 MP
  • Dual
  • 12 MP
  • Dual
Camera specs
  • 13 MP
  • f/2.2
  • 26mm (wide)
  • PDAF -2 MP
  • f/2.4 depth sensor
  • 12 MP
  • f/1.8
  • 1/2.55''
  • 1.4µm
  • dual pixel PDAF -5 MP
  • f/2.4
  • depth sensor
Functions
  • LED flash
  • panorama
  • HDR
  • LED flash
  • HDR
  • panorama
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 13 MP
  • Single
  • 12 MP
  • Single
Specifications
  • 13 MP
  • f/2.0
  • 12 MP
  • f/2.0
Performance

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

Performance — specifications for K50, X21.
SpecificationK50X21
Processor CPU
  • Octa-core 2.0 GHz Cortex-A53
  • Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260)
Graphics processor GPU
  • PowerVR GE8320
  • Adreno 512
Antutu 7 score *
  • 75122
  • 143728
GeekBench 4 Single Core * Unknown
  • 1806
GeekBench 4 Multi-Core * Unknown
  • 4240
General specs
General specs — specifications for K50, X21.
SpecificationK50X21
Release date
  • 2019
  • February
  • 2018
  • March
Colors
  • Aurora Black
  • Moroccan Blue
  • Platinum Gray
  • Black
  • Aurora White
  • Ruby Red
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 180 EUR
  • 450 EUR
Body build Unknown
  • Front glass
  • aluminum body
Communication and Connectivity
Communication and Connectivity — specifications for K50, X21.
SpecificationK50X21
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 -4G - LTE
  • 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
  • LTE-A
  • 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
  • Wi-Fi Direct
  • DLNA
  • 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
  • USB On-The-Go
  • microUSB 2.0
  • USB On-The-Go
Bluetooth
  • 5.0
  • A2DP
  • LE
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for K50, X21.
SpecificationK50X21
Radio Unknown
  • FM radio
Others
  • DTS: X Surround Sound -Active noise cancellation with dedicated mic
  • 32-bit/192kHz audio -Active noise cancellation with dedicated mic
Other features
Other features — specifications for K50, X21.
SpecificationK50X21
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity - MIL-STD-810G compliant - Also known as LG K12 Max for Brazil
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass - Fast battery charging