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HTC U11 vs Samsung Galaxy A51

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

      U11:
      LCD
      Galaxy A51:
      OLED

    • Width

      Galaxy A51: 2.3 mm narrower

      U11:
      75.9 mm
      Galaxy A51:
      73.6 mm

    • Screen diagonal

      U11: 1 in smaller diagonal

      U11:
      5.5 in
      Galaxy A51:
      6.5 in

    • Chipset

      U11:
      Qualcomm MSM8998 Snapdragon 835 (10 nm)
      Galaxy A51:
      Exynos 9611 (10nm)

    • Rear camera layout

      U11:
      Single
      Galaxy A51:
      Quad

    • Height

      U11: 4.6 mm shorter

      U11:
      153.9 mm
      Galaxy A51:
      158.5 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. U11

      Height:
      153.9 mm
      Width:
      75.9 mm +2.3 mm versus Galaxy A51
      Depth:
      7.9 mm

    2. 2. Galaxy A51

      Height:
      158.5 mm +4.6 mm versus U11
      Width:
      73.6 mm
      Depth:
      7.9 mm

    Weight

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

    1. 1. U11

      169 g

    2. 2. Galaxy A51

      172 g

      +3 g versus U11

    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. U11

      Screen diagonal:
      5.5 in
      Aspect ratio (height:width):
      16:9
      Approximate rectangular screen area:
      83.4 cm²

    2. 2. Galaxy A51

      Screen diagonal:
      6.5 in
      Aspect ratio (height:width):
      20:9
      Approximate rectangular screen area:
      102 cm²

    Galaxy A51 has approximately 22.3% more rectangular screen area than U11.

    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 U11, Galaxy A51, compared at the same storage capacity.
    StorageU11Galaxy A51
    64 GB Unknown 4 GB RAM
    128 GB Unknown 4 / 6 / 8 GB RAM Alternative RAM configurations
    U11: Original memory entry

    128 GB · 6 GB RAM 64 GB · 512GB 4GB

    Practical features

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

    1. U11

    NFC:
    Yes
    Headphone jack:
    No
    Memory card support:
    See details microSD · up to 512 GB (uses SIM 2 slot) - dual SIM model only

    2. Galaxy A51

    NFC:
    Yes
    Headphone jack:
    Yes
    Memory card support:
    See details microSD · up to 1 TB (dedicated 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. U11

      3000 mAh

    2. 2. Galaxy A51

      4000 mAh

      +1000 mAh versus U11

    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. U112. Galaxy A51

    Everyday essentials
    Everyday essentials — specifications for U11, Galaxy A51.
    SpecificationU11Galaxy A51
    Dimensions (HxWxD)
    • 153.9 Х 75.9 Х 7.9 mm
    • 158.5 Х 73.6 Х 7.9 mm
    Weight
    • 169 g
    • 172 g
    Technology
    • Super LCD5
    • Super AMOLED
    Screen size
    • 5.5" inch
    • 6.5" inch
    Screen resolution
    • 1440 x 2560 px
    • 1080 x 2400 px
    Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
    • 128 GB
    • 6 GB RAM 64 GB
    • 512GB 4GB
    • 64GB 4GB RAM
    • 128GB 4GB RAM
    • 128GB 6GB RAM
    • 128GB 8GB RAM
    Memory card support
    • microSD
    • up to 512 GB (uses SIM 2 slot) - dual SIM model only
    • microSD
    • up to 1 TB (dedicated slot)
    Battery Capacity is not battery life. No endurance test is implied.
    • 3000 mAh
    • Non-removable Li-Ion
    • 4000 mAh
    • Non-removable Li-Po
    Operating system OS
    • Android 7.1 (Nougat)
    • upgradable to Android 8.0 (Oreo); Sense UI
    • Android 10.0; One UI 2
    Chipset
    • Qualcomm MSM8998 Snapdragon 835 (10 nm)
    • Exynos 9611 (10nm)
    NFC
    • Yes
    • Yes
    Headphone jack
    • No
    • Yes
    Display
    Display — specifications for U11, Galaxy A51.
    SpecificationU11Galaxy A51
    Touchscreen
    • capacitive touchscreen
    • capacitive touchscreen
    Display colors
    • 16M
    • 16M
    Screen area
    • 83.4 cm2
    • 102.0 cm2
    Screen format
    • 16:9 (height:width)
    • 20:9 (height:width)
    Screen to body ratio
    • 71.4%
    • 87.4%
    PPI /points per inch/
    • 534 PPI
    • 405 PPI
    Screen protection
    • Corning Gorilla Glass 5
    • Corning Gorilla Glass 3
    Camera and Video

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

    Camera and Video — specifications for U11, Galaxy A51.
    SpecificationU11Galaxy A51
    Rear camera, main
    • 12 MP
    • Single
    • 48 MP
    • Quad
    Camera specs
    • 12 MP
    • f/1.7
    • 1/2.55''
    • 1.4µm
    • dual pixel PDAF
    • 5-axis OIS
    • 48 MP
    • f/2.0
    • 26mm (wide)
    • 1/2.0"
    • 0.8µm
    • PDAF -12 MP
    • f/2.2
    • 12mm (ultrawide) -5 MP
    • f/2.4
    • 25mm (macro)
    • 1/5.0"
    • 1.12µm -5 MP
    • 1.12µm
    • depth sensor
    Functions
    • Dual-LED dual-tone flash
    • HDR
    • panorama
    • HDR
    Video
    • 1080p@30fps
    • 1080p@30fps
    Front camera, selfie
    • 16 MP
    • Single
    • 32 MP
    • Single
    Specifications
    • 16 MP
    • f/2.0
    • 32 MP
    • f/2.2
    • 26mm (wide)
    • 1/2.8"
    • 0.8µm
    DxOMark Main Score *
    • 90
    		 Unknown
    DxOMark Photo *
    • 90
    		 Unknown
    DxOMark Video *
    • 89
    		 Unknown
    Performance

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

    Performance — specifications for U11, Galaxy A51.
    SpecificationU11Galaxy A51
    Processor CPU
    • Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo)
    • Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
    Graphics processor GPU
    • Adreno 540
    • Mali-G72 MP3
    Antutu 7 score *
    • 214359
    • 155326
    GeekBench 4 Single Core *
    • 1913
    		 Unknown
    GeekBench 4 Multi-Core *
    • 6333
    		 Unknown
    GeekBench 4 RenderScript *
    • 7938
    		 Unknown
    Antutu 8 score * Unknown
    • 186846
    GeekBench 5 Single Core *
    • 382
    • 322
    GeekBench 5 Multi-Core *
    • 1468
    • 1212
    General specs
    General specs — specifications for U11, Galaxy A51.
    SpecificationU11Galaxy A51
    Release date
    • 2017
    • May
    • 2019
    • December
    Colors
    • Amazing Silver
    • Sapphire Blue
    • Brilliant Black
    • Ice White
    • Solar Red
    • Prism Crush Black
    • White
    • Blue
    • Pink
    Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
    • 370 EUR
    • $280
    Battery life
    • Stand by time- Up to 336 h (3G) Talking time- Up to 24 h 30 min (3G)
    • Talking time- Up to 32 h (3G) Music play - Up to 87 h
    Body build
    • Front/back glass
    • aluminum frame
    • Glass front (Gorilla Glass 3)
    • plastic back
    • plastic frame
    Communication and Connectivity
    Communication and Connectivity — specifications for U11, Galaxy A51.
    SpecificationU11Galaxy A51
    SIM card
    • Single SIM (Nano-SIM)Hybrid Dual SIM (Nano-SIM
    • dual stand-by)
    • Single SIM (Nano-SIM)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 band 1(2100)
    • 3(1800)
    • 4(1700/2100)
    • 5(850)
    • 7(2600)
    • 8(900)
    • 12(700)
    • 17(700)
    • 20(800)
    • 28(700)
    • 32(1500)
    • 38(2600)
    • 39(1900)
    • 40(2300)
    • 41(2500)
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) -3G - HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE (unspecified)
    Speed
    • HSPA 42.2/5.76 Mbps
    • LTE-A (4CA) Cat16 1024/75 Mbps
    • HSPA
    • LTE-A
    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
    • Wi-Fi Direct
    • hotspot
    GPS
    • Yes
    • with A-GPS
    • GLONASS
    • BDS
    • Yes
    • with A-GPS
    • GLONASS
    • GALILEO
    • BDS
    USB
    • 3.1
    • Type-C 1.0 reversible connector
    • 2.0
    • Type-C 1.0 reversible connector
    • USB On-The-Go
    Bluetooth
    • 4.2
    • A2DP
    • LE (5.0 after SW update)
    • 5.0
    • A2DP
    • LE
    Harmful irradiation Unknown
    • SAR - 0.80 W/kg (head) 0.67 W/kg (body) SAR EU - 0.37 W/kg (head) 1.59 W/kg (body)
    Music and Audio
    Music and Audio — specifications for U11, Galaxy A51.
    SpecificationU11Galaxy A51
    Radio
    • No
    • FM radio
    Others
    • 24-bit/192kHz audio -Active noise cancellation with dedicated mic
    • Active noise cancellation with dedicated mic
    Other features
    Other features — specifications for U11, Galaxy A51.
    SpecificationU11Galaxy A51
    Dop
    • Sensors Fingerprint (front-mounted)
    • accelerometer
    • gyro
    • proximity
    • compass - Fast battery charging (Quick Charge 3.0) - IP67 dust/water resistant (up to 1m for 30 mins) - Also known as HTC U11 Dual SIM with dual-SIM card slots128GB/6GB (China
    • Taiwan
    • Malaysia
    • Singapore
    • India
    • Hong Kong
    • Russia
    • Saudi Arabia
    • Philippines)
    • Sensors Fingerprint (under display
    • optical)
    • accelerometer
    • gyro
    • proximity
    • compass - ANT+ - Fast battery charging 15W - Versions: SM-A515F/DSN (Global); SM-A515F/DS (LATAM); SM-A515F/DST (Brazil); SM-A515F/DSM (Russia); SM-A515F/N (Australia)

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