HTC Desire 820 vs Xiaomi Redmi 4a

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

    Redmi 4a: 23.5 g lighter

    Desire 820:
    155 g
    Redmi 4a:
    131.5 g
  • Width

    Redmi 4a: 8.3 mm narrower

    Desire 820:
    78.7 mm
    Redmi 4a:
    70.4 mm
  • Screen diagonal

    Redmi 4a: 0.5 in smaller diagonal

    Desire 820:
    5.5 in
    Redmi 4a:
    5 in
  • Chipset

    Desire 820:
    Qualcomm MSM8939 Snapdragon 615 (28 nm)
    Redmi 4a:
    Qualcomm MSM8917 Snapdragon 425 (28 nm)
  • Depth

    Desire 820: 0.8 mm thinner

    Desire 820:
    7.7 mm
    Redmi 4a:
    8.5 mm
  • Height

    Redmi 4a: 17.8 mm shorter

    Desire 820:
    157.7 mm
    Redmi 4a:
    139.9 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. Desire 820

    Height:
    157.7 mm +17.8 mm versus Redmi 4a
    Width:
    78.7 mm +8.3 mm versus Redmi 4a
    Depth:
    7.7 mm
  2. 2. Redmi 4a

    Height:
    139.9 mm
    Width:
    70.4 mm
    Depth:
    8.5 mm +0.8 mm versus Desire 820

Weight

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

  1. 1. Desire 820

    155 g

    +23.5 g versus Redmi 4a

  2. 2. Redmi 4a

    131.5 g

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. Desire 820

    Screen diagonal:
    5.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    83.4 cm²
  2. 2. Redmi 4a

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

Desire 820 has approximately 21% more rectangular screen area than Redmi 4a.

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 Desire 820, Redmi 4a, compared at the same storage capacity.
StorageDesire 820Redmi 4a
16 GB Recorded for all phones 2 GB RAM 2 GB RAM
32 GB Not recorded 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. Desire 820

NFC:
See details Yes (optional)
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (dedicated slot)

2. Redmi 4a

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (uses SIM 2 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. Desire 820

    2600 mAh

  2. 2. Redmi 4a

    3120 mAh

    +520 mAh versus Desire 820

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. Desire 8202. Redmi 4a

Everyday essentials
Everyday essentials — specifications for Desire 820, Redmi 4a.
SpecificationDesire 820Redmi 4a
Dimensions (HxWxD)
  • 157.7 Х 78.7 Х 7.7 mm
  • 139.9 Х 70.4 Х 8.5 mm
Weight
  • 155 g
  • 131.5 g
Technology
  • LCD
  • IPS LCD
Screen size
  • 5.5" inch
  • 5" inch
Screen resolution
  • 720 x 1280 px
  • 720 x 1280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16 GB
  • 2 GB RAM
  • 16/32 GB
  • 2 GB RAM
Memory card support
  • microSD
  • up to 256 GB (dedicated slot)
  • microSD
  • up to 256 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 2600 mAh
  • Non-removable Li-Po
  • 3120 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 4.4.2 (KitKat)
  • upgradable to 6.1 (Marshmallow); Sense UI 7
  • Android 6.0.1 (Marshmallow); MIUI 10
Chipset
  • Qualcomm MSM8939 Snapdragon 615 (28 nm)
  • Qualcomm MSM8917 Snapdragon 425 (28 nm)
NFC
  • Yes (optional)
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Desire 820, Redmi 4a.
SpecificationDesire 820Redmi 4a
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 83.4 cm2
  • 68.0 cm2
Screen format
  • 16:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 67.2%
  • 69.0%
PPI /points per inch/
  • 267 PPI
  • 296 PPI
Screen protection
  • Corning Gorilla Glass 3
Unknown
Camera and Video
Camera and Video — specifications for Desire 820, Redmi 4a.
SpecificationDesire 820Redmi 4a
Rear camera, main
  • 13 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 13 MP
  • f/2.2
  • 28mm (wide)
  • AF
  • 13 MP
  • AF
  • f/2.2
Functions
  • LED flash
  • HDR
  • LED flash
  • HDR
  • panorama
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 5 MP
  • Single
Specifications
  • 8 MP
  • f/2.3
  • 5 MP
  • f/2.2
Performance

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

Performance — specifications for Desire 820, Redmi 4a.
SpecificationDesire 820Redmi 4a
Processor CPU
  • Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
  • Quad-core 1.4 GHz Cortex-A53
Graphics processor GPU
  • Adreno 405
  • Adreno 308
Antutu 7 score *
  • 37236
  • 43152
GeekBench 4 Single Core *
  • 573
  • 664
GeekBench 4 Multi-Core *
  • 1447
  • 1740
GeekBench 4 RenderScript *
  • 1914
  • 1350
GeekBench 5 Single Core * Unknown
  • 123
GeekBench 5 Multi-Core * Unknown
  • 396
General specs
General specs — specifications for Desire 820, Redmi 4a.
SpecificationDesire 820Redmi 4a
Release date
  • 2014
  • September
  • 2016
  • November
Colors
  • Marble white
  • Tuxedo Grey
  • Santorini White
  • Milky-way Grey
  • Tangerine White
  • Saffron Grey
  • Flamingo Grey
  • Blue Misty
  • Monarch Orange
  • Gold
  • Rose Gold
  • Dark Gray
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 340 EUR
  • 110 EUR
Battery life
  • Stand by time- Up to 424 h (3G) Talking time- Up to 22 h 24 min (3G)
Unknown
Body build Unknown
  • plastic body
Communication and Connectivity
Communication and Connectivity — specifications for Desire 820, Redmi 4a.
SpecificationDesire 820Redmi 4a
SIM card
  • Nano-SIM
  • Hybrid Dual SIM (Nano-SIM/ Micro-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA 850 / 900 / 1900 / 2100 - EMEA
  • Asia HSDPA 850 / 900 / 2100 - Europe TD-SCDMA - Asia -4G - LTE band 3(1800)
  • 7(2600)
  • 8(900)
  • 20(800) - Europe LTE band 1(2100)
  • 3(1800)
  • 8(900) - EMEA LTE band 1(2100)
  • 28(700)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500) - Asia
  • 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)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 20(800)
  • 38(2600)
  • 40(2300)
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA
  • LTE
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n
  • dual-band
  • Wi-Fi Direct
  • DLNA
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • USB Host
  • microUSB 2.0
Bluetooth
  • 4.0
  • A2DP
  • aptX
  • 4.1
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for Desire 820, Redmi 4a.
SpecificationDesire 820Redmi 4a
Radio
  • FM radio
  • FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Desire 820, Redmi 4a.
SpecificationDesire 820Redmi 4a
Dop
  • Sensors Accelerometer
  • proximity
  • compass
  • Sensors Accelerometer
  • gyro
  • proximity
  • Infrared port