LG Optimus Z vs Samsung i620

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

    i620: 8.8 g lighter

    Optimus Z:
    135 g
    i620:
    126.2 g
  • Width

    Optimus Z: 2.4 mm narrower

    Optimus Z:
    56.9 mm
    i620:
    59.3 mm
  • Screen diagonal

    i620: 1.3 in smaller diagonal

    Optimus Z:
    3.5 in
    i620:
    2.2 in
  • Chipset

    Optimus Z:
    Qualcomm QSD8250 Snapdragon S1
    i620:
    TI OMAP 1710
  • Depth

    Optimus Z: 5.3 mm thinner

    Optimus Z:
    11 mm
    i620:
    16.3 mm
  • Height

    i620: 23 mm shorter

    Optimus Z:
    117.9 mm
    i620:
    94.9 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. Optimus Z

    Height:
    117.9 mm +23 mm versus i620
    Width:
    56.9 mm
    Depth:
    11 mm
  2. 2. i620

    Height:
    94.9 mm
    Width:
    59.3 mm +2.4 mm versus Optimus Z
    Depth:
    16.3 mm +5.3 mm versus Optimus Z

Weight

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

  1. 1. Optimus Z

    135 g

    +8.8 g versus i620

  2. 2. i620

    126.2 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. Optimus Z

    Screen diagonal:
    3.5 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    37.9 cm²
  2. 2. i620

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

Optimus Z has approximately 153.1% more rectangular screen area than i620.

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.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

i620: Original memory entry

80 MB · 64 MB RAM · 128 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. Optimus Z

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB (dedicated slot) · 4 GB included

2. i620

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. Optimus Z

    1350 mAh

    +150 mAh versus i620

  2. 2. i620

    1200 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. Optimus Z2. i620

Everyday essentials
Everyday essentials — specifications for Optimus Z, i620.
SpecificationOptimus Zi620
Dimensions (HxWxD)
  • 117.9 Х 56.9 Х 11 mm
  • 94.9 Х 59.3 Х 16.3 mm
Weight
  • 135 g
  • 126.2 g
Technology
  • TFT
  • TFT
Screen size
  • 3.5" inch
  • 2.2" inch
Screen resolution
  • 480 x 640 px
  • 320 x 240 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded. Unknown
  • 80 MB
  • 64 MB RAM
  • 128 MB ROM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • 4 GB included
  • microSD (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1350 mAh
  • Removable Li-Ion
  • 1200 mAh
  • Removable Li-Ion
Operating system OS
  • Android 2.1 (Eclair)
  • upgradable to 2.2 (Froyo)
  • Microsoft Windows Mobile 6.0 Standard Edition
Chipset
  • Qualcomm QSD8250 Snapdragon S1
  • TI OMAP 1710
Headphone jack
  • Yes
  • No
Display
Display — specifications for Optimus Z, i620.
SpecificationOptimus Zi620
Touchscreen
  • capacitive touchscreen
Unknown
Display colors
  • 256K
  • 65K
Screen area
  • 37.9 cm2
  • 15.0 cm2
Screen format
  • 4:3 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 56.5%
  • 26.6%
PPI /points per inch/
  • 229 PPI
  • 182 PPI
Screen protection
  • Corning Gorilla Glass
Unknown
Camera and Video
Camera and Video — specifications for Optimus Z, i620.
SpecificationOptimus Zi620
Rear camera, main
  • 5 MP
  • Single
  • 2 MP
  • Single
Camera specs
  • 5 MP
  • AF
  • 2 MP
Functions Unknown
  • LED flash
Video
  • 720p
  • Yes
Front camera, selfie
  • 0 MP,
  • 0.3 MP
  • Single
Specifications Unknown
  • VGA videocall camera
Performance
Performance — specifications for Optimus Z, i620.
SpecificationOptimus Zi620
Processor CPU
  • 1.0 GHz Scorpion
  • 220 MHz ARM926EJ-S
Graphics processor GPU
  • Adreno 200
Unknown
General specs
General specs — specifications for Optimus Z, i620.
SpecificationOptimus Zi620
Release date
  • 2010
  • April
  • 2007
  • June
Colors
  • Black
  • White
  • Pink
  • Silver
  • Black
  • Pink
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 130 EUR
Battery life
  • Stand by time- Up to 200 h Talking time- Up to 4 h 10 min
  • Stand by time- Up to 320 h Talking time- Up to 6 h 30 min
Communication and Connectivity
Communication and Connectivity — specifications for Optimus Z, i620.
SpecificationOptimus Zi620
SIM card
  • Mini-SIM
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900
Speed
  • HSPA 7.2/0.384 Mbps
  • HSPA 1.8 Mbps
GPRS
  • Class 10
  • Class 10
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g
  • DLNA
  • hotspot (Android 2.2)
  • No
GPS
  • Yes
  • with A-GPS
  • No
USB
  • microUSB 2.0
  • miniUSB 2.0
Bluetooth
  • 2.1
  • A2DP
  • 2.0
  • A2DP
Harmful irradiation Unknown
  • SAR - 0.33 W/kg (head) 0.29 W/kg (body) SAR EU - 0.38 W/kg (head)
Music and Audio
Music and Audio — specifications for Optimus Z, i620.
SpecificationOptimus Zi620
Radio
  • No
  • No
Others
  • Dolby Mobile
Unknown
Other features
Other features — specifications for Optimus Z, i620.
SpecificationOptimus Zi620
Dop
  • Sensors Accelerometer
  • proximity
  • compass - On-screen-phone function -Drag & Shake file sharing -TV Tuner (T-DMB) -HDMI port -MP3/WMA/AAC player -DivX/MP4/H.263 player -Organizer -Document viewer -Voice memo -Predictive text input - For South Korea Also known as LG KU9500
  • LG SU950
  • WMV/3GP/H.263/MP4 player -WMA/MP3/AAC/AAC+/OGG/ASF player -Organizer -Pocket Office