O2 XDA Zest vs ZTE Obsidian

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

    XDA Zest: 35 g lighter

    XDA Zest:
    102.5 g
    Obsidian:
    137.5 g
  • Width

    XDA Zest: 8.1 mm narrower

    XDA Zest:
    60.5 mm
    Obsidian:
    68.6 mm
  • Screen diagonal

    XDA Zest: 1.7 in smaller diagonal

    XDA Zest:
    2.8 in
    Obsidian:
    4.5 in
  • Depth

    Obsidian: 6.3 mm thinner

    XDA Zest:
    16.5 mm
    Obsidian:
    10.2 mm
  • Height

    XDA Zest: 35.4 mm shorter

    XDA Zest:
    102 mm
    Obsidian:
    137.4 mm
  • Release year

    XDA Zest:
    2008
    Obsidian:
    2015

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. XDA Zest

    Height:
    102 mm
    Width:
    60.5 mm
    Depth:
    16.5 mm +6.3 mm versus Obsidian
  2. 2. Obsidian

    Height:
    137.4 mm +35.4 mm versus XDA Zest
    Width:
    68.6 mm +8.1 mm versus XDA Zest
    Depth:
    10.2 mm

Weight

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

  1. 1. XDA Zest

    102.5 g

  2. 2. Obsidian

    137.5 g

    +35 g versus XDA Zest

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. XDA Zest

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

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

Obsidian has approximately 129.9% more rectangular screen area than XDA Zest.

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 XDA Zest, Obsidian, compared at the same storage capacity.
StorageXDA ZestObsidian
4 GB Unknown 1 GB RAM
XDA Zest: Original memory entry

128 MB RAM · 256 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. XDA Zest

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details microSD · up to 16 GB (dedicated slot)

2. Obsidian

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 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. XDA Zest

    1300 mAh

  2. 2. Obsidian

    1800 mAh

    +500 mAh versus XDA Zest

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. XDA Zest2. Obsidian

Everyday essentials
Everyday essentials — specifications for XDA Zest, Obsidian.
SpecificationXDA ZestObsidian
Dimensions (HxWxD)
  • 102 Х 60.5 Х 16.5 mm
  • 137.4 Х 68.6 Х 10.2 mm
Weight
  • 102.5 g
  • 137.5 g
Technology
  • TFT
  • TFT
Screen size
  • 2.8" inch
  • 4.5" inch
Screen resolution
  • 480 x 640 px
  • 480 x 854 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128 MB RAM
  • 256 MB ROM
  • 4 GB
  • 1 GB RAM
Memory card support
  • microSD
  • up to 16 GB (dedicated slot)
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1300 mAh
  • Removable Li-Ion
  • 1800 mAh
  • Removable Li-Ion
Operating system OS
  • Microsoft Windows Mobile 6.1 Professional
  • Android 5.1 (Lollipop)
Chipset Unknown
  • Mediatek MT6735M (28 nm)
Headphone jack
  • No
  • Yes
Display
Display — specifications for XDA Zest, Obsidian.
SpecificationXDA ZestObsidian
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 24.3 cm2
  • 55.8 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 39.3%
  • 59.2%
PPI /points per inch/
  • 286 PPI
  • 218 PPI
Camera and Video
Camera and Video — specifications for XDA Zest, Obsidian.
SpecificationXDA ZestObsidian
Rear camera, main
  • 3.15 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 3.15 MP
  • AF
  • 5 MP
Functions Unknown
  • LED flash
Video
  • Yes
  • Yes
Front camera, selfie
  • 0.3 MP
  • Single
  • 2 MP
  • Single
Specifications
  • VGA videocall camera
  • 2 MP
Performance
Performance — specifications for XDA Zest, Obsidian.
SpecificationXDA ZestObsidian
Processor CPU
  • 624MHz Marvell TavorP
  • Quad-core 1.0 GHz Cortex-A53
Graphics processor GPU Unknown
  • Mali-T720MP2
General specs
General specs — specifications for XDA Zest, Obsidian.
SpecificationXDA ZestObsidian
Release date
  • 2008
  • October
  • 2015
  • August
Colors
  • Black
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 130 EUR
Battery life
  • Stand by time- Up to 260 h Talking time- Up to 5 h
  • Stand by time- Up to 252 h (3G) Talking time- Up to 6 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for XDA Zest, Obsidian.
SpecificationXDA ZestObsidian
SIM card
  • Mini-SIM
  • Micro-SIM
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA 850 / 1700(AWS) / 1900 -4G - LTE band 2(1900)
  • 4(1700/2100)
  • 12(700)
Speed
  • HSPA 3.6/0.384 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • with A-GPS
  • SiRF Star III chipset
  • Yes
  • with A-GPS
USB
  • miniUSB 1.1
  • microUSB 2.0
Bluetooth
  • 2.0
  • A2DP
  • 4.0
  • A2DP
Music and Audio
Music and Audio — specifications for XDA Zest, Obsidian.
SpecificationXDA ZestObsidian
Radio
  • No
  • FM radio
Others
  • Handwriting recognition
Unknown
Other features
Other features — specifications for XDA Zest, Obsidian.
SpecificationXDA ZestObsidian
Dop
  • SiRF star III chipset -Pocket Office -Voice memo -MP3 player -Predictive text input
  • Sensors Accelerometer