Lava A51 vs vivo X23

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.

  • Width

    A51: 8.1 mm narrower

    A51:
    66 mm
    X23:
    74.1 mm
  • Screen diagonal

    A51: 1.91 in smaller diagonal

    A51:
    4.5 in
    X23:
    6.41 in
  • Chipset

    A51:
    Spreadtrum SC7731C
    X23:
    Qualcomm SDM670 Snapdragon 670 (10 nm)
  • Rear camera layout

    A51:
    Single
    X23:
    Dual
  • Depth

    X23: 2.4 mm thinner

    A51:
    9.9 mm
    X23:
    7.5 mm
  • Height

    A51: 21.7 mm shorter

    A51:
    136 mm
    X23:
    157.7 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. A51

    Height:
    136 mm
    Width:
    66 mm
    Depth:
    9.9 mm +2.4 mm versus X23
    Weight:
    Unknown
  2. 2. X23

    Height:
    157.7 mm +21.7 mm versus A51
    Width:
    74.1 mm +8.1 mm versus A51
    Depth:
    7.5 mm
    Weight:
    Unknown

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. A51

    Screen diagonal:
    4.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    55.8 cm²
  2. 2. X23

    Screen diagonal:
    6.41 in
    Aspect ratio (height:width):
    19.5:9
    Approximate rectangular screen area:
    100.9 cm²

X23 has approximately 80.7% more rectangular screen area than A51.

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 A51, X23, compared at the same storage capacity.
StorageA51X23
128 GB Unknown 8 GB RAM
A51: Original memory entry

8 GB · 512 MB 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. A51

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB

2. X23

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
No

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. A51

    1750 mAh

  2. 2. X23

    3400 mAh

    +1650 mAh versus A51

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. A512. X23

Everyday essentials
Everyday essentials — specifications for A51, X23.
SpecificationA51X23
Dimensions (HxWxD)
  • 136 Х 66 Х 9.9 mm
  • 157.7 Х 74.1 Х 7.5 mm
Weight
  • 0 g
  • 0 g
Technology
  • TFT
  • Super AMOLED
Screen size
  • 4.5" inch
  • 6.41" inch
Screen resolution
  • 480 x 854 px
  • 1080 x 2340 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 8 GB
  • 512 MB RAM
  • 128 GB
  • 8 GB RAM
Memory card support
  • microSD
  • up to 32 GB
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 1750 mAh
  • Removable Li-Ion
  • 3400 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 6.0 (Marshmallow)
  • Android 8.1 (Oreo); Funtouch 4.5
Chipset
  • Spreadtrum SC7731C
  • Qualcomm SDM670 Snapdragon 670 (10 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A51, X23.
SpecificationA51X23
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 55.8 cm2
  • 100.9 cm2
Screen format
  • 16:9 (height:width)
  • 19.5:9 (height:width)
Screen to body ratio
  • 62.2%
  • 86.3%
PPI /points per inch/
  • 218 PPI
  • 402 PPI
Camera and Video
Camera and Video — specifications for A51, X23.
SpecificationA51X23
Rear camera, main
  • 5 MP
  • Single
  • 12 MP
  • Dual
Camera specs
  • 5 MP
  • 12 MP
  • f/1.8
  • 1/2.55''
  • 1.4µm
  • dual pixel PDAF -13 MP
  • f/2.4
Functions
  • LED flash
  • panorama
  • HDR
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 12 MP
  • Single
Specifications
  • VGA
  • 12 MP
Performance

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

Performance — specifications for A51, X23.
SpecificationA51X23
Processor CPU
  • Quad-core 1.2 GHz
  • Octa-core (4x2.0 GHz Kryo 360 & 4x1.8 GHz Kryo 360)
Graphics processor GPU Unknown
  • Adreno 615
Antutu 7 score * Unknown
  • 146328
General specs
General specs — specifications for A51, X23.
SpecificationA51X23
Release date
  • 2016
  • October
  • 2018
  • September
Colors
  • Gray
  • Black
  • Gold
  • Phantom Purple
  • Magic Night
  • Phantom Red
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 500 EUR
Battery life
  • Stand by time- Up to 420 h (3G) Talking time- Up to 10 h 30 min (3G)
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for A51, X23.
SpecificationA51X23
SIM card
  • Dual SIM
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100)
  • 2(1900)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 8(900)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 300/150 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
USB
  • microUSB 2.0
  • microUSB 2.0
  • USB On-The-Go
Bluetooth
  • 2.1
  • EDR
  • 5.0
  • A2DP
  • EDR
  • LE
  • aptX
Music and Audio
Music and Audio — specifications for A51, X23.
SpecificationA51X23
Radio
  • FM radio
  • FM radio
Others Unknown
  • 32-bit/192kHz audio -Active noise cancellation with dedicated mic
Other features
Other features — specifications for A51, X23.
SpecificationA51X23
Dop
  • Sensors Accelerometer For India
  • Sensors Fingerprint (under display)
  • accelerometer
  • proximity
  • compass - Fast battery charging 10V/2.25A 22.5W