Xiaomi Mi 4 vs Xiaomi Redmi 8

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

    Mi 4: 39 g lighter

    Mi 4:
    149 g
    Redmi 8:
    188 g
  • Width

    Mi 4: 6.9 mm narrower

    Mi 4:
    68.5 mm
    Redmi 8:
    75.4 mm
  • Screen diagonal

    Mi 4: 1.22 in smaller diagonal

    Mi 4:
    5 in
    Redmi 8:
    6.22 in
  • Chipset

    Mi 4:
    Qualcomm MSM8974AC Snapdragon 801 (28 nm)
    Redmi 8:
    Qualcomm SDM439 Snapdragon 439 (12 nm)
  • Depth

    Mi 4: 0.5 mm thinner

    Mi 4:
    8.9 mm
    Redmi 8:
    9.4 mm
  • Height

    Mi 4: 17.3 mm shorter

    Mi 4:
    139.2 mm
    Redmi 8:
    156.5 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. Mi 4

    Height:
    139.2 mm
    Width:
    68.5 mm
    Depth:
    8.9 mm
  2. 2. Redmi 8

    Height:
    156.5 mm +17.3 mm versus Mi 4
    Width:
    75.4 mm +6.9 mm versus Mi 4
    Depth:
    9.4 mm +0.5 mm versus Mi 4

Weight

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

  1. 1. Mi 4

    149 g

  2. 2. Redmi 8

    188 g

    +39 g versus Mi 4

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 4

    Screen diagonal:
    5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    68.9 cm²
  2. 2. Redmi 8

    Screen diagonal:
    6.22 in
    Aspect ratio (height:width):
    19:9
    Approximate rectangular screen area:
    96.6 cm²

Redmi 8 has approximately 40.1% more rectangular screen area than Mi 4.

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 4, Redmi 8, compared at the same storage capacity.
StorageMi 4Redmi 8
32 GB Unknown 3 GB RAM
64 GB Unknown 4 GB RAM
Mi 4: Original memory entry

16/64 GB · 2/3 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 4

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

2. Redmi 8

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 512 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 4

    3080 mAh

  2. 2. Redmi 8

    5000 mAh

    +1920 mAh versus Mi 4

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 42. Redmi 8

Everyday essentials
Everyday essentials — specifications for Mi 4, Redmi 8.
SpecificationMi 4Redmi 8
Dimensions (HxWxD)
  • 139.2 Х 68.5 Х 8.9 mm
  • 156.5 Х 75.4 Х 9.4 mm
Weight
  • 149 g
  • 188 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 5" inch
  • 6.22" inch
Screen resolution
  • 1080 x 1920 px
  • 720 x 1520 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16/64 GB
  • 2/3 GB RAM
  • 32GB 3GB RAM
  • 64GB 4GB RAM
Memory card support
  • No
  • microSD
  • up to 512 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 3080 mAh
  • Non-removable Li-Ion
  • 5000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 4.4.3 (KitKat)
  • upgradable to 6.0.1 (Marshmallow); MIUI 10
  • Android 9.0 (Pie)
Chipset
  • Qualcomm MSM8974AC Snapdragon 801 (28 nm)
  • Qualcomm SDM439 Snapdragon 439 (12 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Mi 4, Redmi 8.
SpecificationMi 4Redmi 8
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 68.9 cm2
  • 96.6 cm2
Screen format
  • 16:9 (height:width)
  • 19:9 (height:width)
Screen to body ratio
  • 72.3%
  • 81.8%
PPI /points per inch/
  • 441 PPI
  • 270 PPI
Screen protection Unknown
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for Mi 4, Redmi 8.
SpecificationMi 4Redmi 8
Rear camera, main
  • 13 MP
  • Single
  • 12 MP
  • Single
Camera specs
  • 13 MP
  • f/1.8
  • 1/3''
  • 1.12µm
  • AF
  • 12 MP
  • f/1.8
  • 1/2.55''
  • 1.4µm
  • Dual Pixel PDAF -2 MP
  • depth sensor
Functions
  • LED flash
  • panorama
  • HDR
  • HDR
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 8 MP
  • Single
Specifications
  • 8 MP
  • f/1.8
  • 8 MP
  • f/2.0
  • 1.12µm
Performance

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

Performance — specifications for Mi 4, Redmi 8.
SpecificationMi 4Redmi 8
Processor CPU
  • Quad-core 2.5 GHz Krait 400
  • Octa-core (2x1.95 GHz Cortex-A53 & 6x1.45 GHz Cortex A53)
Graphics processor GPU
  • Adreno 330
  • Adreno 505
Antutu 7 score *
  • 61632
  • 83198
GeekBench 4 Single Core *
  • 891
Unknown
GeekBench 4 Multi-Core *
  • 1967
Unknown
GeekBench 4 RenderScript *
  • 1997
Unknown
Antutu 8 score * Unknown
  • 99402
GeekBench 5 Single Core * Unknown
  • 177
GeekBench 5 Multi-Core * Unknown
  • 822
General specs
General specs — specifications for Mi 4, Redmi 8.
SpecificationMi 4Redmi 8
Release date
  • 2014
  • July
  • 2019
  • October
Colors
  • Black
  • White
  • Onyx Black
  • Ruby Red
  • Sapphire Blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 230 EUR
  • 100 EUR
Battery life
  • Stand by time- Up to 280 h (3G)
Unknown
Body build
  • aluminum frame
  • plastic back
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Mi 4, Redmi 8.
SpecificationMi 4Redmi 8
SIM card
  • Micro-SIM
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - all versions CDMA 800 / 1900 - Telecom 3G model -3G - TD-SCDMA - 4G model HSDPA 850 / 900 / 1900 / 2100 - Unicom 3G model
  • Telecom 3G model CDMA2000 1xEV-DO - Telecom 3G model -4G - LTE band 38(2600)
  • 39(1900)
  • 40(2300) - 4G model
  • 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)
  • 3(1800)
  • 5(850)
  • 8(900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE
  • EV-DO Rev.A 3.1 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 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • BDS
USB
  • microUSB 2.0
  • USB Host
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • 4.0
  • A2DP
  • 4.2
  • A2DP
  • LE
Harmful irradiation
  • SAR - 1.36 W/kg (head)
  • SAR - 0.34 W/kg (head) 1.00 W/kg (body)
Music and Audio
Music and Audio — specifications for Mi 4, Redmi 8.
SpecificationMi 4Redmi 8
Radio
  • FM radio
  • Wireless FM radio (no wired he
Others
  • Active noise cancellation with dedicated mic
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Mi 4, Redmi 8.
SpecificationMi 4Redmi 8
Dop
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass
  • barometer
  • Infrared port - Fast battery charging (Quick Charge 2.0)
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass
  • Infrared port - Fast battery charging 18W - Splash resistant