HTC Desire 820 dual sim vs O2 XDA Serra

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

    Desire 820 dual sim: 10 g lighter

    Desire 820 dual sim:
    155 g
    XDA Serra:
    165 g
  • Width

    XDA Serra: 27.7 mm narrower

    Desire 820 dual sim:
    78.7 mm
    XDA Serra:
    51 mm
  • Screen diagonal

    XDA Serra: 2.7 in smaller diagonal

    Desire 820 dual sim:
    5.5 in
    XDA Serra:
    2.8 in
  • Chipset

    Desire 820 dual sim:
    Qualcomm MSM8939 Snapdragon 615 (28 nm)
    XDA Serra:
    Qualcomm MSM7201A
  • Depth

    Desire 820 dual sim: 10.4 mm thinner

    Desire 820 dual sim:
    7.7 mm
    XDA Serra:
    18.1 mm
  • Height

    XDA Serra: 55.7 mm shorter

    Desire 820 dual sim:
    157.7 mm
    XDA Serra:
    102 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 dual sim

    Height:
    157.7 mm +55.7 mm versus XDA Serra
    Width:
    78.7 mm +27.7 mm versus XDA Serra
    Depth:
    7.7 mm
  2. 2. XDA Serra

    Height:
    102 mm
    Width:
    51 mm
    Depth:
    18.1 mm +10.4 mm versus Desire 820 dual sim

Weight

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

  1. 1. Desire 820 dual sim

    155 g

  2. 2. XDA Serra

    165 g

    +10 g versus Desire 820 dual sim

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 dual sim

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

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²

Desire 820 dual sim has approximately 243.5% more rectangular screen area than XDA Serra.

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 dual sim, XDA Serra, compared at the same storage capacity.
StorageDesire 820 dual simXDA Serra
16 GB 2 GB RAM Unknown
XDA Serra: Original memory entry

288 MB RAM · 512 MB ROM

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 dual sim

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

2. XDA Serra

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details microSD (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. Desire 820 dual sim

    2600 mAh

    +1260 mAh versus XDA Serra

  2. 2. XDA Serra

    1340 mAh

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 820 dual sim2. XDA Serra

Everyday essentials
Everyday essentials — specifications for Desire 820 dual sim, XDA Serra.
SpecificationDesire 820 dual simXDA Serra
Dimensions (HxWxD)
  • 157.7 Х 78.7 Х 7.7 mm
  • 102 Х 51 Х 18.1 mm
Weight
  • 155 g
  • 165 g
Technology
  • LCD
  • TFT
Screen size
  • 5.5" inch
  • 2.8" inch
Screen resolution
  • 720 x 1280 px
  • 480 x 640 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16 GB
  • 2 GB RAM
  • 288 MB RAM
  • 512 MB ROM
Memory card support
  • microSD
  • up to 256 GB (dedicated slot)
  • microSD (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 2600 mAh
  • Non-removable Li-Po
  • 1340 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.4.2 (KitKat); Sense UI 6
  • Microsoft Windows Mobile 6.1 Professional
Chipset
  • Qualcomm MSM8939 Snapdragon 615 (28 nm)
  • Qualcomm MSM7201A
NFC
  • Yes
Unknown
Headphone jack
  • Yes
  • No
Display
Display — specifications for Desire 820 dual sim, XDA Serra.
SpecificationDesire 820 dual simXDA Serra
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors
  • 16M
  • 65K
Screen area
  • 83.4 cm2
  • 24.3 cm2
Screen format
  • 16:9 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 67.2%
  • 46.7%
PPI /points per inch/
  • 267 PPI
  • 286 PPI
Screen protection
  • Corning Gorilla Glass 3
Unknown
Camera and Video
Camera and Video — specifications for Desire 820 dual sim, XDA Serra.
SpecificationDesire 820 dual simXDA Serra
Rear camera, main
  • 13 MP
  • Single
  • 3.15 MP
  • Single
Camera specs
  • 13 MP
  • AF
  • 3.15 MP
  • AF
Functions
  • LED flash
  • HDR
  • LED flash
Video
  • 1080p@30fps
  • Yes
Front camera, selfie
  • 8 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • 8 MP
  • VGA videocall camera
Performance

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

Performance — specifications for Desire 820 dual sim, XDA Serra.
SpecificationDesire 820 dual simXDA Serra
Processor CPU
  • Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
  • 528 MHz ARM 11
Graphics processor GPU
  • Adreno 405
  • Adreno 130
Antutu 7 score *
  • 37396
Unknown
General specs
General specs — specifications for Desire 820 dual sim, XDA Serra.
SpecificationDesire 820 dual simXDA Serra
Release date
  • 2014
  • September
  • 2008
  • July
Colors
  • Marble white
  • Tuxedo Grey
  • Santorini White
  • Milky-way Grey
  • Tangerine White
  • Saffron Grey
  • Flamingo Grey
  • Blue Misty
  • Monarch Orange
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 320 EUR
Unknown
Battery life
  • Stand by time- Up to 424 h (3G) Talking time- Up to 22 h 40 min (3G)
  • Stand by time- Up to 406 h Talking time- Up to 8 h
Communication and Connectivity
Communication and Connectivity — specifications for Desire 820 dual sim, XDA Serra.
SpecificationDesire 820 dual simXDA Serra
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1900 / 2100 - EMEA
  • Asia HSDPA 850 / 900 / 2100 - India TD-SCDMA -4G - LTE band 1(2100)
  • 3(1800)
  • 7(2600)
  • 8(900)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500) - Asia
  • India
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA 7.2/0.384 Mbps
GPRS
  • Yes
  • Class 10
Edge
  • Yes
  • Class 10
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n
  • dual-band
  • Wi-Fi Direct
  • DLNA
  • hotspot
  • Wi-Fi 802.11 b/g
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • USB Host
  • miniUSB
Bluetooth
  • 4.0
  • A2DP
  • aptX
  • 2.0
  • A2DP
Harmful irradiation
  • SAR EU - 0.14 W/kg (head)
Unknown
Music and Audio
Music and Audio — specifications for Desire 820 dual sim, XDA Serra.
SpecificationDesire 820 dual simXDA Serra
Radio
  • FM radio
  • Stereo FM radio
  • RDS
Others Unknown
  • Handwriting recognition
Other features
Other features — specifications for Desire 820 dual sim, XDA Serra.
SpecificationDesire 820 dual simXDA Serra
Dop
  • Sensors Accelerometer
  • proximity
  • compass
  • Sensors Accelerometer MP3/WAV/WMA player -MP4/WMV/3gp player -Pocket Office -Voice memo -Predictive text input