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  2. HTC First vs Karbonn A21

HTC First vs Karbonn A21

Compare recorded specifications, size and practical differences.

HTC First

HTC First

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    Karbonn A21

    Karbonn A21

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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.

        • Screen diagonalFirst: 0.2 in smaller diagonalFirst: 4.3 in · A21: 4.5 in
        • Release year2013 / 2012First: 2013 · A21: 2012

        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.

        Front
        First: 126 × 65 mm 1
        Side
        First: 126 × 8.9 mm 1
        1. 1. First
          Height
          126 mm
          Width
          65 mm
          Depth
          8.9 mm
          Weight
          123.9 g
        2. 2. A21
          Height
          Unknown
          Width
          Unknown
          Depth
          Unknown
          Weight
          Unknown

          Unavailable dimensions are omitted from the drawing.

        Specifications

        Open a section for more detail. Scroll inside a table to keep phone names visible; on narrow screens, swipe sideways or use the arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

        Everyday essentials
        Everyday essentials
        SpecificationFirstA21
        Dimensions (HxWxD)
        • 126 Х 65 Х 8.9 mm
        • Х Х mm
        Weight
        • 123.9 g
        • 0 g
        Technology
        • Super LCD
        • TFT
        Screen size
        • 4.3" inch
        • 4.5" inch
        Screen resolution
        • 720 x 1280 px
        • 480 x 800 px
        Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
        • 16 GB
        • 1 GB RAM
        • 4 GB
        • 512 MB RAM
        Memory card support
        • No
        • microSD
        • up to 32 GB (dedicated slot)
        BatteryCapacity is not battery life. No endurance test is implied.
        • 2000 mAh
        • Non-removable Li-Po
        • 1800 mAh
        • Removable Li-Ion
        Operating system OS
        • Android 4.1 (Jelly Bean); Facebook Home UI
        • Android 4.0 (Ice Cream Sandwich)
        Chipset
        • Qualcomm MSM8930 Snapdragon 400 (28 nm)
        		 Unknown
        NFC
        • Yes
        		 Unknown
        Headphone jack
        • Yes
        • Yes
        Display
        Display
        SpecificationFirstA21
        Touchscreen
        • capacitive touchscreen
        • capacitive touchscreen
        Display colors
        • 16M
        • 256K
        Screen area
        • 51.0 cm2
        • 57.6 cm2
        Screen format
        • 16:9 (height:width)
        • 5:3 (height:width)
        Screen to body ratio
        • 62.2%
        		 Unknown
        PPI /points per inch/
        • 342 PPI
        • 207 PPI
        Screen protection
        • Corning Gorilla Glass
        		 Unknown
        Camera and Video
        Camera and Video
        SpecificationFirstA21
        Rear camera, main
        • 5 MP
        • Single
        • 5 MP
        • Single
        Camera specs
        • 5 MP
        • AF
        • 5 MP
        • AF
        Functions
        • LED flash
        • LED flash
        Video
        • 1080p@30fps
        • Yes
        Front camera, selfie
        • 1.6 MP
        • Single
        • 1.3 MP
        • Single
        Specifications
        • 1.6 MP
        • 1.3 MP
        Performance
        Performance
        SpecificationFirstA21
        Processor CPU
        • Dual-core 1.4 GHz Krait
        • Dual-core 1.2 GHz
        Graphics processor GPU
        • Adreno 305
        		 Unknown
        Antutu 7 scoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.
        • 18456
        		 Unknown
        General specs
        General specs
        SpecificationFirstA21
        Release date
        • 2013
        • April
        • 2012
        Colors
        • White
        • Black
        • Red
        • Pale Blue
        • Pearl White
        Historical recorded priceLegacy catalogue value; date unknown. Not a current offer.
        • 200 EUR
        • 130 EUR
        Battery life
        • Stand by time- Up to 432 h Talking time- Up to 14 h 20 min
        • Stand by time- Up to 200 h Talking time- Up to 5 h
        Communication and Connectivity
        Communication and Connectivity
        SpecificationFirstA21
        SIM card
        • Micro-SIM
        • Dual SIM (Mini-SIM)
        Network
        • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 1900 / 2100 - AT&T -4G - LTE band 2(1900)
        • 4(1700/2100)
        • 5(850)
        • 17(700) - AT&T
        • Show all network frequencies: -2G - GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
        Speed
        • HSPA
        • HSPA 7.2/0.384 Mbps
        GPRS
        • Yes
        • Yes
        Edge
        • Yes
        • Yes
        Wi-Fi
        • Wi-Fi 802.11 a/b/g/n
        • dual-band
        • hotspot
        • Wi-Fi 802.11 b/g/n
        GPS
        • Yes
        • with A-GPS
        • GLONASS
        • Yes
        • with A-GPS
        USB
        • microUSB 2.0
        • microUSB 2.0
        Bluetooth
        • 4.0
        • A2DP
        • LE
        • 2.1
        • A2DP
        Harmful irradiation Unknown
        • SAR EU - 0.44 W/kg (head)
        Music and Audio
        Music and Audio
        SpecificationFirstA21
        Radio
        • FM radio
        • No
        Others
        • Active noise cancellation with dedicated mic
        		 Unknown
        Other features
        Other features
        SpecificationFirstA21
        Dop
        • Sensors Accelerometer
        • gyro
        • proximity
        • compass
        • Sensors Accelerometer
        • proximity

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