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Energizer Energy E401 vs LG GT540 Optimus

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.

    • Screen diagonal

      GT540 Optimus: 1 in smaller diagonal

      Energy E401:
      4 in
      GT540 Optimus:
      3 in

    • Release year

      Energy E401:
      2019
      GT540 Optimus:
      2010

    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. Energy E401

      Height:
      Unknown
      Width:
      Unknown
      Depth:
      Unknown
      Weight:
      Unknown

      Unavailable dimensions are omitted from the drawing.

    2. 2. GT540 Optimus

      Height:
      109 mm
      Width:
      54.5 mm
      Depth:
      12.7 mm
      Weight:
      115.5 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. Energy E401

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

    2. 2. GT540 Optimus

      Screen diagonal:
      3 in
      Aspect ratio (height:width):
      3:2
      Approximate rectangular screen area:
      26.8 cm²

    Energy E401 has approximately 64.6% more rectangular screen area than GT540 Optimus.

    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 Energy E401, GT540 Optimus, compared at the same storage capacity.
    StorageEnergy E401GT540 Optimus
    8 GB 1 GB RAM Unknown
    GT540 Optimus: Original memory entry

    139 MB · 156 MB 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. Energy E401

    NFC:
    Unknown
    Headphone jack:
    Yes
    Memory card support:
    See details microSD · up to 32 GB (uses SIM 2 slot)

    2. GT540 Optimus

    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. Energy E401

      2000 mAh

      +500 mAh versus GT540 Optimus

    2. 2. GT540 Optimus

      1500 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. Energy E4012. GT540 Optimus

    Everyday essentials
    Everyday essentials — specifications for Energy E401, GT540 Optimus.
    SpecificationEnergy E401GT540 Optimus
    Dimensions (HxWxD)
    • Х Х mm
    • 109 Х 54.5 Х 12.7 mm
    Weight
    • 0 g
    • 115.5 g
    Technology
    • TFT
    • TFT
    Screen size
    • 4" inch
    • 3" inch
    Screen resolution
    • 480 x 854 px
    • 320 x 480 px
    Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
    • 8 GB
    • 1 GB RAM
    • 139 MB
    • 156 MB RAM
    Memory card support
    • microSD
    • up to 32 GB (uses SIM 2 slot)
    • microSD
    • up to 32 GB (dedicated slot)
    Battery Capacity is not battery life. No endurance test is implied.
    • 2000 mAh
    • Li-Ion
    • 1500 mAh
    • Removable Li-Ion
    Operating system OS
    • Android 8.0 Oreo (Go edition)
    • Android 1.6 (Donut)
    • upgradable to 2.1 (Eclair)
    Chipset
    • Mediatek MT6580M (28 nm)
    		 Unknown
    Headphone jack
    • Yes
    • Yes
    Display
    Display — specifications for Energy E401, GT540 Optimus.
    SpecificationEnergy E401GT540 Optimus
    Touchscreen
    • capacitive touchscreen
    • resistive touchscreen
    Display colors
    • 16M
    		 Unknown
    Screen area
    • 44.1 cm2
    • 26.8 cm2
    Screen format
    • 16:9 (height:width)
    • 3:2 (height:width)
    Screen to body ratio Unknown
    • 45.1%
    PPI /points per inch/
    • 245 PPI
    • 192 PPI
    Camera and Video
    Camera and Video — specifications for Energy E401, GT540 Optimus.
    SpecificationEnergy E401GT540 Optimus
    Rear camera, main
    • 5 MP
    • Single
    • 3.15 MP
    • Single
    Camera specs
    • 5 MP
    • 3.15 MP
    • AF
    Functions
    • LED flash
    		 Unknown
    Video
    • 720p@30fps
    • 480p@17fps
    Front camera, selfie
    • 2 MP
    • Single
    • 0 MP,
    Specifications
    • 2 MP
    		 Unknown
    Performance
    Performance — specifications for Energy E401, GT540 Optimus.
    SpecificationEnergy E401GT540 Optimus
    Processor CPU
    • Quad-core 1.3 GHz Cortex-A7
    • 600 MHz
    Graphics processor GPU
    • Mali-400MP2
    		 Unknown
    General specs
    General specs — specifications for Energy E401, GT540 Optimus.
    SpecificationEnergy E401GT540 Optimus
    Release date
    • 2019
    • February
    • 2010
    • January
    Colors
    • Black
    • Black
    • White
    • Pink
    Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
    • 70 EUR
    Battery life Unknown
    • Stand by time- Up to 500 h (2G) / Up to 500 h (3G) Talking time- Up to 5 h 30 min (2G) / Up to 7 h 20 min (3G)
    Communication and Connectivity
    Communication and Connectivity — specifications for Energy E401, GT540 Optimus.
    SpecificationEnergy E401GT540 Optimus
    SIM card
    • Dual SIM (Micro-SIM
    • dual stand-by)
    • Mini-SIM
    Network
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
    Speed
    • HSPA 42.2/11.5 Mbps
    • HSPA 7.2/0.384 Mbps
    GPRS
    • Yes
    • Class 10
    Edge
    • Yes
    • Class 10
    Wi-Fi
    • Wi-Fi 802.11 b/g/n
    • hotspot
    • Wi-Fi 802.11 b/g
    GPS
    • Yes
    • with A-GPS
    • Yes
    • with A-GPS
    USB
    • microUSB 2.0
    • microUSB
    Bluetooth
    • 4.0
    • A2DP
    • LE
    • 2.1
    • A2DP
    Harmful irradiation Unknown
    • SAR - 0.93 W/kg (head) 0.63 W/kg (body)
    Music and Audio
    Music and Audio — specifications for Energy E401, GT540 Optimus.
    SpecificationEnergy E401GT540 Optimus
    Radio
    • FM radio
    • Stereo FM radio
    • RDS
    Other features
    Other features — specifications for Energy E401, GT540 Optimus.
    SpecificationEnergy E401GT540 Optimus
    Dop
    • Sensors Accelerometer
    • Sensors Accelerometer MP4/DivX/Xvid/H.264/WMV player -MP3/WAV/WMA/eAAC+ player -Organizer -Document viewer -Voice memo -Predictive text input Also known as LG GT540 Swift
    • LG Loop GT540