HTC Desire 820 vs Oppo Ace2

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.

  • Display technology

    OLED versus LCD

    Desire 820:
    LCD
    Ace2:
    OLED
  • Weight

    Desire 820: 31 g lighter

    Desire 820:
    155 g
    Ace2:
    186 g
  • Width

    Ace2: 3.3 mm narrower

    Desire 820:
    78.7 mm
    Ace2:
    75.4 mm
  • Screen diagonal

    Desire 820: 1.05 in smaller diagonal

    Desire 820:
    5.5 in
    Ace2:
    6.55 in
  • Chipset

    Desire 820:
    Qualcomm MSM8939 Snapdragon 615 (28 nm)
    Ace2:
    Qualcomm SM8250 Snapdragon 865 (7 nm+)
  • Rear camera layout

    Desire 820:
    Single
    Ace2:
    Quad

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
    Width:
    78.7 mm +3.3 mm versus Ace2
    Depth:
    7.7 mm
  2. 2. Ace2

    Height:
    160 mm +2.3 mm versus Desire 820
    Width:
    75.4 mm
    Depth:
    8.6 mm +0.9 mm versus Desire 820

Weight

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

  1. 1. Desire 820

    155 g

  2. 2. Ace2

    186 g

    +31 g versus Desire 820

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. Ace2

    Screen diagonal:
    6.55 in
    Aspect ratio (height:width):
    20:9
    Approximate rectangular screen area:
    103.6 cm²

Ace2 has approximately 24.2% more rectangular screen area than Desire 820.

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, Ace2, compared at the same storage capacity.
StorageDesire 820Ace2
16 GB 2 GB RAM Not recorded
128 GB Not recorded 8 GB RAM
256 GB Not recorded 8 / 12 GB RAM Alternative RAM configurations

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. Ace2

NFC:
Yes
Headphone jack:
No
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. Desire 820

    2600 mAh

  2. 2. Ace2

    4000 mAh

    +1400 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. Ace2

Everyday essentials
Everyday essentials — specifications for Desire 820, Ace2.
SpecificationDesire 820Ace2
Dimensions (HxWxD)
  • 157.7 Х 78.7 Х 7.7 mm
  • 160 Х 75.4 Х 8.6 mm
Weight
  • 155 g
  • 186 g
Technology
  • LCD
  • AMOLED
Screen size
  • 5.5" inch
  • 6.55" inch
Screen resolution
  • 720 x 1280 px
  • 1080 x 2400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16 GB
  • 2 GB RAM
  • 128GB 8GB RAM
  • 256GB 8GB RAM
  • 256GB 12GB RAM
Memory card support
  • microSD
  • up to 256 GB (dedicated slot)
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 2600 mAh
  • Non-removable Li-Po
  • 4000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 4.4.2 (KitKat)
  • upgradable to 6.1 (Marshmallow); Sense UI 7
  • Android 10.0; ColorOS 7.1
Chipset
  • Qualcomm MSM8939 Snapdragon 615 (28 nm)
  • Qualcomm SM8250 Snapdragon 865 (7 nm+)
NFC
  • Yes (optional)
  • Yes
Headphone jack
  • Yes
  • No
Display
Display — specifications for Desire 820, Ace2.
SpecificationDesire 820Ace2
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 83.4 cm2
  • 103.6 cm2
Screen format
  • 16:9 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 67.2%
  • 85.9%
PPI /points per inch/
  • 267 PPI
  • 402 PPI
Screen protection
  • Corning Gorilla Glass 3
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for Desire 820, Ace2.
SpecificationDesire 820Ace2
Rear camera, main
  • 13 MP
  • Single
  • 48 MP
  • Quad
Camera specs
  • 13 MP
  • f/2.2
  • 28mm (wide)
  • AF
  • 48 MP
  • f/1.7
  • 26mm (wide)
  • 1/2.0''
  • 0.8µm
  • PDAF -8 MP
  • f/2.2
  • 13mm (ultrawide)
  • 1/4.0''
  • 1.12µm
  • AF -2 MP B/W
  • (depth) -2 MP
  • (depth)
Functions
  • LED flash
  • HDR
  • HDR
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 16 MP
  • Single
Specifications
  • 8 MP
  • f/2.3
  • 16 MP
  • f/2.4
  • 29mm (wide)
  • 1/3.1''
  • 1.0µm
Performance

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

Performance — specifications for Desire 820, Ace2.
SpecificationDesire 820Ace2
Processor CPU
  • Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
  • Octa-core (1x2.84 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.8 GHz Kryo 585)
Graphics processor GPU
  • Adreno 405
  • Adreno 650
Antutu 7 score *
  • 37236
Unknown
GeekBench 4 Single Core *
  • 573
Unknown
GeekBench 4 Multi-Core *
  • 1447
Unknown
GeekBench 4 RenderScript *
  • 1914
Unknown
General specs
General specs — specifications for Desire 820, Ace2.
SpecificationDesire 820Ace2
Release date
  • 2014
  • September
  • 2020
  • April 13
Colors
  • Marble white
  • Tuxedo Grey
  • Santorini White
  • Milky-way Grey
  • Tangerine White
  • Saffron Grey
  • Flamingo Grey
  • Blue Misty
  • Monarch Orange
  • Aurora Silver
  • Moon Rock Grey
  • Fantasy Purple
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 340 EUR
  • 520 EUR
Battery life
  • Stand by time- Up to 424 h (3G) Talking time- Up to 22 h 24 min (3G)
Unknown
Body build Unknown
  • Glass front (Gorilla Glass 5)
  • glass back (Gorilla Glass 5)
  • aluminum frame
Communication and Connectivity
Communication and Connectivity — specifications for Desire 820, Ace2.
SpecificationDesire 820Ace2
SIM card
  • Nano-SIM
  • Dual SIM (Nano-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 2CDMA 800 / 1900 & TD-SCDMA -3G - HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1xEV-DO -4G - LTE band 1(2100)
  • 2(1900)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 12(700)
  • 17(700)
  • 20(800)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500) - China -5G - 5G band 1(2100)
  • 41(2500)
  • 78(3500)
  • 79(4700); SA/NSA - China
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA
  • LTE-A
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 a/b/g/n/ac/ax
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • Yes
  • with dual-band A-GPS
  • GLONASS
  • BDS
  • GALILEO
  • QZSS
USB
  • microUSB 2.0
  • USB Host
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • 4.0
  • A2DP
  • aptX
  • 5.1
  • A2DP
  • LE
  • aptX HD
Music and Audio
Music and Audio — specifications for Desire 820, Ace2.
SpecificationDesire 820Ace2
Radio
  • FM radio
Unknown
Others Unknown
  • 500 nits typ. brightness (advertised) -HDR10+ -90Hz refresh rate
Other features
Other features — specifications for Desire 820, Ace2.
SpecificationDesire 820Ace2
Dop
  • Sensors Accelerometer
  • proximity
  • compass
  • Sensors Fingerprint (under display
  • optical)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast charging 65W
  • 100% in 30 min (advertised) -SuperVOOC 2.0 -Fast wireless charging 40W
  • 100% in 56 min (advertised) -Wireless reverse charging 10W