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Karbonn Smart A12 Star vs Xiaomi Mi Mix Alpha

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

      Smart A12 Star:
      LCD
      Mi Mix Alpha:
      OLED

    • Weight

      Smart A12 Star: 111 g lighter

      Smart A12 Star:
      130 g
      Mi Mix Alpha:
      241 g

    • Width

      Smart A12 Star: 8.1 mm narrower

      Smart A12 Star:
      64.2 mm
      Mi Mix Alpha:
      72.3 mm

    • Screen diagonal

      Smart A12 Star: 3.92 in smaller diagonal

      Smart A12 Star:
      4 in
      Mi Mix Alpha:
      7.92 in

    • Rear camera layout

      Smart A12 Star:
      Single
      Mi Mix Alpha:
      Triple

    • Height

      Smart A12 Star: 30.2 mm shorter

      Smart A12 Star:
      124.2 mm
      Mi Mix Alpha:
      154.4 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. Smart A12 Star

      Height:
      124.2 mm
      Width:
      64.2 mm
      Depth:
      10.1 mm

    2. 2. Mi Mix Alpha

      Height:
      154.4 mm +30.2 mm versus Smart A12 Star
      Width:
      72.3 mm +8.1 mm versus Smart A12 Star
      Depth:
      10.4 mm

    Weight

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

    1. 1. Smart A12 Star

      130 g

    2. 2. Mi Mix Alpha

      241 g

      +111 g versus Smart A12 Star

    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.

    At least two phones need compatible screen dimensions for a drawing.

    1. 1. Smart A12 Star

      Screen diagonal:
      4 in
      Aspect ratio (height:width):
      5:3
      Approximate rectangular screen area:
      45.5 cm²

    2. 2. Mi Mix Alpha

      Mi Mix Alpha: Screen geometry unavailable or conflicting.

    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.

    No unambiguous storage/RAM pairings are recorded. See the original specifications below.

    Smart A12 Star: Original memory entry

    4 GB · 512 MB RAM

    Mi Mix Alpha: Original memory entry

    512GB 12GB RAM · UFS3.0

    Practical features

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

    1. Smart A12 Star

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

    2. Mi Mix Alpha

    NFC:
    Unknown
    Headphone jack:
    No
    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. Smart A12 Star

      1400 mAh

    2. 2. Mi Mix Alpha

      4050 mAh

      +2650 mAh versus Smart A12 Star

    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. Smart A12 Star2. Mi Mix Alpha

    Everyday essentials
    Everyday essentials — specifications for Smart A12 Star, Mi Mix Alpha.
    SpecificationSmart A12 StarMi Mix Alpha
    Dimensions (HxWxD)
    • 124.2 Х 64.2 Х 10.1 mm
    • 154.4 Х 72.3 Х 10.4 mm
    Weight
    • 130 g
    • 241 g
    Technology
    • IPS LCD
    • Flexible Super AMOLED
    Screen size
    • 4" inch
    • 7.92" inch
    Screen resolution
    • 480 x 800 px
    • 2088 x 2250 px
    Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
    • 4 GB
    • 512 MB RAM
    • 512GB 12GB RAM
    • UFS3.0
    Memory card support
    • microSD
    • up to 32 GB
    • No
    Battery Capacity is not battery life. No endurance test is implied.
    • 1400 mAh
    • Li-Ion
    • 4050 mAh
    • Non-removable Li-Po
    Operating system OS
    • Android 4.4.2 (KitKat)
    • Android 10
    Chipset Unknown
    • Qualcomm SM8150 Snapdragon 855+ (7 nm)
    Headphone jack
    • Yes
    • No
    Display
    Display — specifications for Smart A12 Star, Mi Mix Alpha.
    SpecificationSmart A12 StarMi Mix Alpha
    Touchscreen
    • capacitive touchscreen
    • capacitive touchscreen
    Display colors
    • 16M
    • 16M
    Screen area
    • 45.5 cm2
    • 201.8 cm2
    Screen format
    • 5:3 (height:width)
    		 Unknown
    Screen to body ratio
    • 57.1%
    • 180.8%
    PPI /points per inch/
    • 233 PPI
    • 388 PPI
    Camera and Video
    Camera and Video — specifications for Smart A12 Star, Mi Mix Alpha.
    SpecificationSmart A12 StarMi Mix Alpha
    Rear camera, main
    • 5 MP
    • Single
    • 108 MP
    • Triple
    Camera specs
    • 5 MP
    • 108 MP
    • f/1.7
    • (wide)
    • 1/1.33''
    • 0.8µm
    • PDAF
    • Laser AF -12 MP
    • f/2.0
    • 54mm (telephoto)
    • 1/2.55''
    • 1.4µm
    • dual pixel PDAF
    • laser AF
    • 2x optical zoom -20 MP
    • f/2.2
    • 13mm (ultrawide)
    • 1/2.8''
    • 1.0µm
    Functions
    • LED flash
    • Dual-LED flash
    • HDR
    • panorama
    Video
    • Yes
    • 3240p@30fps
    • 2160p@30/60fps
    • 1080p@30/120/240fps
    • 1080p@960fps
    Front camera, selfie
    • 0.3 MP
    • Single
    • 108 MP
    • Triple
    Specifications
    • VGA
    • uses main camera
    Performance

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

    Performance — specifications for Smart A12 Star, Mi Mix Alpha.
    SpecificationSmart A12 StarMi Mix Alpha
    Processor CPU
    • Dual-core 1.2 GHz
    • Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.8 GHz Kryo 485)
    Graphics processor GPU Unknown
    • Adreno 640 (700 MHz)
    Antutu 8 score * Unknown
    • 480830
    General specs
    General specs — specifications for Smart A12 Star, Mi Mix Alpha.
    SpecificationSmart A12 StarMi Mix Alpha
    Release date
    • 2014
    • July
    • 2019
    • September
    Colors
    • Black
    • Black
    Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
    • 50 EUR
    • 2500 EUR
    Battery life
    • Stand by time- Up to 300 h
    		 Unknown
    Body build Unknown
    • Glass front
    • ceramic/glass back
    • titanium alloy frame (TC4)
    Communication and Connectivity
    Communication and Connectivity — specifications for Smart A12 Star, Mi Mix Alpha.
    SpecificationSmart A12 StarMi Mix Alpha
    SIM card
    • Dual SIM (Micro-SIM
    • dual stand-by)
    • 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 / 1900 / 2100 -4G - LTE band 1(2100)
    • 2(1900)
    • 3(1800)
    • 4(1700/2100)
    • 5(850)
    • 7(2600)
    • 8(900)
    • 34(2000)
    • 38(2600)
    • 39(1900)
    • 40(2300)
    • 41(2500) - China -5G - 5G SA / NSA / Sub6 / mmWave; N41/N78/N79
    Speed
    • HSPA
    • HSPA 42.2/5.76 Mbps
    • LTE-A (7CA) Cat20 2048/150 Mbps
    • 5G (2+ Gbps DL)
    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
    • Wi-Fi Direct
    • DLNA
    • hotspot
    GPS
    • Yes
    • with A-GPS
    • Yes
    • with dual-band A-GPS
    • GLONASS
    • BDS
    • GALILEO
    • QZSS
    USB
    • microUSB 2.0
    • Type-C 1.0 reversible connector
    Bluetooth
    • 2.0
    • 5.0
    • A2DP
    • LE
    • aptX HD
    Harmful irradiation
    • SAR EU - 0.79 W/kg (head)
    		 Unknown
    Music and Audio
    Music and Audio — specifications for Smart A12 Star, Mi Mix Alpha.
    SpecificationSmart A12 StarMi Mix Alpha
    Radio
    • FM radio
    • No
    Others Unknown
    • Active noise cancellation with dedicated mic
    Other features
    Other features — specifications for Smart A12 Star, Mi Mix Alpha.
    SpecificationSmart A12 StarMi Mix Alpha
    Dop
    • Sensors Accelerometer
    • proximity
    • Sensors Fingerprint (under display
    • optical)
    • accelerometer
    • gyro
    • proximity
    • compass
    • barometer - Fast battery charging 40W

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