HTC U Ultra vs Xiaomi Mi Mix

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.

  • Weight

    U Ultra: 39 g lighter

    U Ultra:
    170 g
    Mi Mix:
    209 g
  • Width

    U Ultra: 2.1 mm narrower

    U Ultra:
    79.8 mm
    Mi Mix:
    81.9 mm
  • Screen diagonal

    U Ultra: 0.7 in smaller diagonal

    U Ultra:
    5.7 in
    Mi Mix:
    6.4 in
  • Height

    Mi Mix: 3.6 mm shorter

    U Ultra:
    162.4 mm
    Mi Mix:
    158.8 mm
  • Release year

    U Ultra:
    2017
    Mi Mix:
    2016

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. U Ultra

    Height:
    162.4 mm +3.6 mm versus Mi Mix
    Width:
    79.8 mm
    Depth:
    8 mm
  2. 2. Mi Mix

    Height:
    158.8 mm
    Width:
    81.9 mm +2.1 mm versus U Ultra
    Depth:
    7.9 mm

Weight

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

  1. 1. U Ultra

    170 g

  2. 2. Mi Mix

    209 g

    +39 g versus U Ultra

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. U Ultra

    Screen diagonal:
    5.7 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    89.6 cm²
  2. 2. Mi Mix

    Screen diagonal:
    6.4 in
    Aspect ratio (height:width):
    17:9
    Approximate rectangular screen area:
    109.3 cm²

Mi Mix has approximately 22% more rectangular screen area than U Ultra.

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

Mi Mix: Original memory entry

256 GB · 6 GB RAM 128 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. U Ultra

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

2. Mi Mix

NFC:
Yes
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. U Ultra

    3000 mAh

  2. 2. Mi Mix

    4400 mAh

    +1400 mAh versus U Ultra

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. Mi Mix

Everyday essentials
Everyday essentials — specifications for U Ultra, Mi Mix.
SpecificationU UltraMi Mix
Dimensions (HxWxD)
  • 162.4 Х 79.8 Х 8 mm
  • 158.8 Х 81.9 Х 7.9 mm
Weight
  • 170 g
  • 209 g
Technology
  • Super LCD5
  • IPS LCD
Screen size
  • 5.7" inch
  • 6.4" inch
Screen resolution
  • 1440 x 2560 px
  • 1080 x 2040 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64/128 GB
  • 512GB 4GB
  • 256 GB
  • 6 GB RAM 128 GB
  • 512GB 4GB
Memory card support
  • microSD
  • up to 512 GB (uses SIM 2 slot)
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 3000 mAh
  • Non-removable Li-Ion
  • 4400 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 7.0 (Nougat)
  • upgradable to Android 8.0 (Oreo)
  • Android 6.0 (Marshmallow)
  • upgradable to 8.0 (Oreo); MIUI 10
Chipset
  • Qualcomm MSM8996 Snapdragon 821 (14 nm)
  • Qualcomm MSM8996 Snapdragon 821 (14 nm)
NFC
  • Yes
  • Yes
Headphone jack
  • No
  • Yes
Display
Display — specifications for U Ultra, Mi Mix.
SpecificationU UltraMi Mix
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 90.3 cm2
  • 108.7 cm2
Screen format
  • 16:9 (height:width)
  • 17:9 (height:width)
Screen to body ratio
  • 69.7%
  • 83.6%
PPI /points per inch/
  • 513 PPI
  • 362 PPI
Screen protection
  • Corning Gorilla Glass 5 (64 GB version)Sapphire crystal glass (128 GB version)
Unknown
Camera and Video
Camera and Video — specifications for U Ultra, Mi Mix.
SpecificationU UltraMi Mix
Rear camera, main
  • 12 MP
  • Single
  • 16 MP
  • Single
Camera specs
  • 12 MP
  • f/1.8
  • 26mm (wide)
  • 1/2.3''
  • 1.55µm
  • OIS
  • PDAF & laser AF
  • 16 MP
  • f/2.0
  • 1/3''
  • 1.0µm
  • PDAF
Functions
  • Auto-HDR
  • Dual-LED dual-tone flash
  • HDR
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 16 MP
  • Single
  • 5 MP
  • Single
Specifications
  • 16 MP
  • 5 MP
  • f/2.2
Performance

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

Performance — specifications for U Ultra, Mi Mix.
SpecificationU UltraMi Mix
Processor CPU
  • Quad-core (2x2.15 GHz Kryo & 2x1.6 GHz Kryo)
  • Quad-core (2x2.35 GHz Kryo & 2x2.19 GHz Kryo)
Graphics processor GPU
  • Adreno 530
  • Adreno 530
Antutu 7 score *
  • 168385
  • 157822
GeekBench 4 Single Core *
  • 1662
  • 1749
GeekBench 4 Multi-Core *
  • 3920
  • 3882
GeekBench 4 RenderScript *
  • 7174
  • 6859
GeekBench 5 Single Core *
  • 302
  • 335
GeekBench 5 Multi-Core *
  • 795
  • 789
General specs
General specs — specifications for U Ultra, Mi Mix.
SpecificationU UltraMi Mix
Release date
  • 2017
  • January
  • 2016
  • October
Colors
  • Brilliant Black
  • Cosmetic Pink
  • Ice White
  • Sapphire Blue
  • Black
  • White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 250 EUR
  • 390 EUR
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
  • Front glass
  • ceramic frame
  • back
Communication and Connectivity
Communication and Connectivity — specifications for U Ultra, Mi Mix.
SpecificationU UltraMi Mix
SIM card
  • Hybrid Dual SIM (Nano-SIM
  • dual stand-by)
  • Dual SIM (Nano-SIM
  • dual stand-by)
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 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
  • 2(1900)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE-A (3CA) Cat11 600/50 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A (3CA) Cat12 600/150 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 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • 3.1
  • Type-C 1.0 reversible connector
  • Type-C 1.0 reversible connector
Bluetooth
  • 4.2
  • A2DP
  • LE
  • 4.2
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for U Ultra, Mi Mix.
SpecificationU UltraMi Mix
Radio
  • No
  • No
Others
  • Secondary display
  • 160 x 1040 pixels
  • 2 inches
  • 24-bit/192kHz audio -Active noise cancellation with dedicated mic
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for U Ultra, Mi Mix.
SpecificationU UltraMi Mix
Dop
  • Sensors Fingerprint (front-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging (Quick Charge 3.0) - Also known as HTC Ocean Note
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • barometer - Fast battery charging (Quick Charge 3.0)