Xiaomi Mi 4i vs YU Ace

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.

  • Screen diagonal

    Mi 4i: 0.45 in smaller diagonal

    Mi 4i:
    5 in
    Ace:
    5.45 in
  • Chipset

    Mi 4i:
    Qualcomm MSM8939 Snapdragon 615 (28 nm)
    Ace:
    Mediatek MT6739WW (28 nm)
  • Depth

    Mi 4i: 1.8 mm thinner

    Mi 4i:
    7.8 mm
    Ace:
    9.6 mm
  • Height

    Mi 4i: 9.9 mm shorter

    Mi 4i:
    138.1 mm
    Ace:
    148 mm
  • Release year

    Mi 4i:
    2015
    Ace:
    2018

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. Mi 4i

    Height:
    138.1 mm
    Width:
    69.6 mm
    Depth:
    7.8 mm
    Weight:
    130 g
  2. 2. Ace

    Height:
    148 mm +9.9 mm versus Mi 4i
    Width:
    70.5 mm
    Depth:
    9.6 mm +1.8 mm versus Mi 4i
    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.

  1. 1. Mi 4i

    Screen diagonal:
    5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    68.9 cm²
  2. 2. Ace

    Screen diagonal:
    5.45 in
    Aspect ratio (height:width):
    18:9
    Approximate rectangular screen area:
    76.7 cm²

Ace has approximately 11.2% more rectangular screen area than Mi 4i.

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 Mi 4i, Ace, compared at the same storage capacity.
StorageMi 4iAce
16 GB 2 GB RAM Unknown
32 GB 2 GB RAM Unknown
Ace: Original memory entry

32 GB · 3 RAM 16 GB · 2 GB 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. Mi 4i

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
No

2. Ace

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 128 GB (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. Mi 4i

    3120 mAh

  2. 2. Ace

    4000 mAh

    +880 mAh versus Mi 4i

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. Mi 4i2. Ace

Everyday essentials
Everyday essentials — specifications for Mi 4i, Ace.
SpecificationMi 4iAce
Dimensions (HxWxD)
  • 138.1 Х 69.6 Х 7.8 mm
  • 148 Х 70.5 Х 9.6 mm
Weight
  • 130 g
  • 0 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 5" inch
  • 5.45" inch
Screen resolution
  • 1080 x 1920 px
  • 720 x 1440 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16/32 GB
  • 2 GB RAM
  • 32 GB
  • 3 RAM 16 GB
  • 2 GB RAM
Memory card support
  • No
  • microSD
  • up to 128 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 3120 mAh
  • Non-removable Li-Ion
  • 4000 mAh
  • Removable Li-Po
Operating system OS
  • Android 5.0.2 (Lollipop); MIUI 8.2
  • Android 8.0 (Oreo)
Chipset
  • Qualcomm MSM8939 Snapdragon 615 (28 nm)
  • Mediatek MT6739WW (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Mi 4i, Ace.
SpecificationMi 4iAce
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 68.9 cm2
  • 76.7 cm2
Screen format
  • 16:9 (height:width)
  • 18:9 (height:width)
Screen to body ratio
  • 71.7%
  • 73.5%
PPI /points per inch/
  • 441 PPI
  • 295 PPI
Screen protection
  • Corning scratch-resistant glass
Unknown
Camera and Video
Camera and Video — specifications for Mi 4i, Ace.
SpecificationMi 4iAce
Rear camera, main
  • 13 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 13 MP
  • AF
  • f/2.0
  • 13 MP
  • AF
Functions
  • Dual-LED dual-tone flash
  • panorama
  • HDR
  • LED flash
Video
  • 1080p@30fps
  • 480p@120fps
  • 720p@30fps
Front camera, selfie
  • 5 MP
  • Single
  • 5 MP
  • Single
Specifications
  • 5 MP
  • f/1.8
  • 5 MP
Performance

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

Performance — specifications for Mi 4i, Ace.
SpecificationMi 4iAce
Processor CPU
  • Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
  • Quad-core 1.5 GHz Cortex-A53
Graphics processor GPU
  • Adreno 405
  • PowerVR GE8100
Antutu 7 score *
  • 40156
  • 31252
GeekBench 4 Single Core *
  • 617
Unknown
GeekBench 4 Multi-Core *
  • 1374
Unknown
GeekBench 4 RenderScript *
  • 1404
Unknown
General specs
General specs — specifications for Mi 4i, Ace.
SpecificationMi 4iAce
Release date
  • 2015
  • April
  • 2018
  • August
Colors
  • Dark Gray
  • Black
  • White
  • Yellow
  • Blue
  • Pink
  • Charcoal Grey
  • Elektric Blue
  • Rose Gold
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 260 EUR
  • 6000 INR
Battery life
  • Talking time- Up to 35 h (3G)
Unknown
Body build
  • plastic body
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Mi 4i, Ace.
SpecificationMi 4iAce
SIM card
  • Dual SIM (Micro-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 / 1900 / 2100 TD-SCDMA -4G - LTE band 3(1800)
  • 7(2600)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA
  • LTE Cat4 150/50 Mbps
  • HSPA 21.1/5.76 Mbps
  • LTE Cat4 150/50 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • WiFi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • USB Host
  • microUSB 2.0
  • USB On-The-Go
Bluetooth
  • 4.1
  • A2DP
  • 4.1
  • A2DP
Harmful irradiation
  • SAR - 1.29 W/kg (head)
Unknown
Music and Audio
Music and Audio — specifications for Mi 4i, Ace.
SpecificationMi 4iAce
Radio
  • Stereo FM radio
  • FM radio
Others
  • Active noise cancellation with dedicated mic
Unknown
Other features
Other features — specifications for Mi 4i, Ace.
SpecificationMi 4iAce
Dop
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging: 40% in 60 min (Quick Charge)
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity - Fast battery charging 10W - For India