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  2. HTC U Ultra vs ZTE Open

HTC U Ultra vs ZTE Open

Compare recorded specifications, size and practical differences.

HTC U Ultra

HTC U Ultra

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    ZTE Open

    ZTE Open

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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.

        • WidthOpen: 17.8 mm narrowerOpen: 62 mm · U Ultra: 79.8 mm
        • Screen diagonalOpen: 2.2 in smaller diagonalOpen: 3.5 in · U Ultra: 5.7 in
        • ChipsetQualcomm MSM8996 Snapdragon 821 (14 nm) / Qualcomm MSM7225A Snapdragon S1U Ultra: Qualcomm MSM8996 Snapdragon 821 (14 nm) · Open: Qualcomm MSM7225A Snapdragon S1
        • DepthU Ultra: 4.5 mm thinnerU Ultra: 8 mm · Open: 12.5 mm
        • HeightOpen: 48.4 mm shorterOpen: 114 mm · U Ultra: 162.4 mm
        • Release year2017 / 2013U Ultra: 2017 · Open: 2013

        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
        U Ultra: 162.4 × 79.8 mm 1 Open: 114 × 62 mm 2
        Side
        U Ultra: 162.4 × 8 mm 1 Open: 114 × 12.5 mm 2
        1. 1. U Ultra
          Height
          162.4 mm+48.4 mm versus Open
          Width
          79.8 mm+17.8 mm versus Open
          Depth
          8 mm
          Weight
          170 g
        2. 2. Open
          Height
          114 mm
          Width
          62 mm
          Depth
          12.5 mm+4.5 mm versus U Ultra
          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.

        Screen size
        U Ultra: 5.7 in, 16:9, About 89.6 cm² rectangular area 1 Open: 3.5 in, 3:2, About 36.5 cm² rectangular area 2
        1. 1. U Ultra 5.7 in · 16:9 About 89.6 cm² rectangular area
        2. 2. Open 3.5 in · 3:2 About 36.5 cm² rectangular area

        U Ultra has approximately 145.5% more rectangular screen area than Open.

        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.

        U Ultra: Original memory entry

        64/128 GB · 512GB 4GB

        Open: Original memory entry

        512 MB ROM · 256 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. U Ultra

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

        2. Open

        NFC
        Unknown
        Headphone jack
        Yes
        Memory card support
        See details microSD · up to 32 GB (dedicated slot) · 2 GB included

        Battery capacity

        Capacity is not battery life. No endurance test is implied.

        Recorded capacity

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

        1. 1. U Ultra3000 mAh

          +1800 mAh versus Open

        2. 2. Open1200 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. U Ultra2. Open

        Everyday essentials
        Everyday essentials
        SpecificationU UltraOpen
        Dimensions (HxWxD)
        • 162.4 Х 79.8 Х 8 mm
        • 114 Х 62 Х 12.5 mm
        Weight
        • 170 g
        • 0 g
        Technology
        • Super LCD5
        • TFT
        Screen size
        • 5.7" inch
        • 3.5" inch
        Screen resolution
        • 1440 x 2560 px
        • 320 x 480 px
        Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
        • 64/128 GB
        • 512GB 4GB
        • 512 MB ROM
        • 256 MB RAM
        Memory card support
        • microSD
        • up to 512 GB (uses SIM 2 slot)
        • microSD
        • up to 32 GB (dedicated slot)
        • 2 GB included
        BatteryCapacity is not battery life. No endurance test is implied.
        • 3000 mAh
        • Non-removable Li-Ion
        • 1200 mAh
        • Removable Li-Ion
        Operating system OS
        • Android 7.0 (Nougat)
        • upgradable to Android 8.0 (Oreo)
        • Firefox OS 1.0
        Chipset
        • Qualcomm MSM8996 Snapdragon 821 (14 nm)
        • Qualcomm MSM7225A Snapdragon S1
        NFC
        • Yes
        		 Unknown
        Headphone jack
        • No
        • Yes
        Display
        Display
        SpecificationU UltraOpen
        Touchscreen
        • capacitive touchscreen
        • capacitive touchscreen
        Display colors
        • 16M
        		 Unknown
        Screen area
        • 90.3 cm2
        • 36.5 cm2
        Screen format
        • 16:9 (height:width)
        • 3:2 (height:width)
        Screen to body ratio
        • 69.7%
        • 51.6%
        PPI /points per inch/
        • 513 PPI
        • 165 PPI
        Screen protection
        • Corning Gorilla Glass 5 (64 GB version)Sapphire crystal glass (128 GB version)
        		 Unknown
        Camera and Video
        Camera and Video
        SpecificationU UltraOpen
        Rear camera, main
        • 12 MP
        • Single
        • 3.15 MP
        • Single
        Camera specs
        • 12 MP
        • f/1.8
        • 26mm (wide)
        • 1/2.3''
        • 1.55µm
        • OIS
        • PDAF & laser AF
        • 3.15 MP
        Functions
        • Auto-HDR
        		 Unknown
        Video
        • 1080p@30fps
        • Yes
        Front camera, selfie
        • 16 MP
        • Single
        • 0 MP,
        Specifications
        • 16 MP
        		 Unknown
        Performance
        Performance
        SpecificationU UltraOpen
        Processor CPU
        • Quad-core (2x2.15 GHz Kryo & 2x1.6 GHz Kryo)
        • 1.0 GHz Cortex-A5
        Graphics processor GPU
        • Adreno 530
        • Adreno 200
        Antutu 7 scoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.
        • 168385
        • 1456
        GeekBench 4 Single CoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.
        • 1662
        		 Unknown
        GeekBench 4 Multi-CoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.
        • 3920
        		 Unknown
        GeekBench 4 RenderScriptLegacy recorded score. Test conditions are unspecified; no new testing is implied.
        • 7174
        		 Unknown
        GeekBench 5 Single CoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.
        • 302
        		 Unknown
        GeekBench 5 Multi-CoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.
        • 795
        		 Unknown
        General specs
        General specs
        SpecificationU UltraOpen
        Release date
        • 2017
        • January
        • 2013
        • February
        Colors
        • Brilliant Black
        • Cosmetic Pink
        • Ice White
        • Sapphire Blue
        • Blue
        • Orange
        Historical recorded priceLegacy catalogue value; date unknown. Not a current offer.
        • 250 EUR
        		 Unknown
        Battery life
        • Stand by time- Up to 312 h (3G) Talking time- Up to 26 h (3G)
        		 Unknown
        Body build
        • Front/back glass
        • aluminum frame
        		 Unknown
        Communication and Connectivity
        Communication and Connectivity
        SpecificationU UltraOpen
        SIM card
        • Hybrid Dual SIM (Nano-SIM
        • dual stand-by)
        • Mini-SIM
        Network
        • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100)
        • 2(1900)
        • 3(1800)
        • 4(1700/2100)
        • 5(850)
        • 7(2600)
        • 8(900)
        • 12(700)
        • 17(700)
        • 20(800)
        • 28(700)
        • 38(2600)
        • 39(1900)
        • 40(2300)
        • 41(2500)
        • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
        Speed
        • HSPA 42.2/5.76 Mbps
        • LTE-A (3CA) Cat11 600/50 Mbps
        • HSPA 7.2/5.76 Mbps
        GPRS
        • Yes
        • Yes
        Edge
        • Yes
        • Yes
        Wi-Fi
        • Wi-Fi 802.11 a/b/g/n/ac
        • dual-band
        • WiFi Direct
        • DLNA
        • hotspot
        • Wi-Fi 802.11 b/g/n
        GPS
        • Yes
        • with A-GPS
        • GLONASS
        • BDS
        • Yes
        • with A-GPS
        USB
        • 3.1
        • Type-C 1.0 reversible connector
        • microUSB 2.0
        Bluetooth
        • 4.2
        • A2DP
        • LE
        • 2.1
        • A2DP
        • EDR
        Music and Audio
        Music and Audio
        SpecificationU UltraOpen
        Radio
        • No
        • Stereo FM radio
        Others
        • Secondary display
        • 160 x 1040 pixels
        • 2 inches
        • 24-bit/192kHz audio -Active noise cancellation with dedicated mic
        		 Unknown
        Other features
        Other features
        SpecificationU UltraOpen
        Dop
        • Sensors Fingerprint (front-mounted)
        • accelerometer
        • gyro
        • proximity
        • compass - Fast battery charging (Quick Charge 3.0) - Also known as HTC Ocean Note
        • Sensors Accelerometer
        • proximity - MP3/eAAC+/WAV/WMA player -MP4/H.264/WMV player -Document viewer -Photo viewer -Organizer -Voice memo/dial -Predictive text input

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