Acer DX900 vs Energizer Energy 400 LTE

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

    DX900: 57 g lighter

    DX900:
    147 g
    Energy 400 LTE:
    204 g
  • Width

    DX900: 11.5 mm narrower

    DX900:
    60.5 mm
    Energy 400 LTE:
    72 mm
  • Screen diagonal

    DX900: 1.2 in smaller diagonal

    DX900:
    2.8 in
    Energy 400 LTE:
    4 in
  • Depth

    Energy 400 LTE: 2 mm thinner

    DX900:
    17 mm
    Energy 400 LTE:
    15 mm
  • Height

    DX900: 28 mm shorter

    DX900:
    106 mm
    Energy 400 LTE:
    134 mm
  • Release year

    DX900:
    2009
    Energy 400 LTE:
    2017

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. DX900

    Height:
    106 mm
    Width:
    60.5 mm
    Depth:
    17 mm +2 mm versus Energy 400 LTE
  2. 2. Energy 400 LTE

    Height:
    134 mm +28 mm versus DX900
    Width:
    72 mm +11.5 mm versus DX900
    Depth:
    15 mm

Weight

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

  1. 1. DX900

    147 g

  2. 2. Energy 400 LTE

    204 g

    +57 g versus DX900

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. DX900

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²
  2. 2. Energy 400 LTE

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    45.5 cm²

Energy 400 LTE has approximately 87.6% more rectangular screen area than DX900.

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 DX900, Energy 400 LTE, compared at the same storage capacity.
StorageDX900Energy 400 LTE
8 GB Unknown 1 GB RAM
DX900: 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. DX900

NFC:
See details Super AMOLED
Headphone jack:
See details panorama
Memory card support:
See details microSD (dedicated slot)

2. Energy 400 LTE

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 64 GB (uses SIM 2 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. DX900

    1530 mAh

  2. 2. Energy 400 LTE

    2500 mAh

    +970 mAh versus DX900

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. DX9002. Energy 400 LTE

Everyday essentials
Everyday essentials — specifications for DX900, Energy 400 LTE.
SpecificationDX900Energy 400 LTE
Dimensions (HxWxD)
  • 106 Х 60.5 Х 17 mm
  • 134 Х 72 Х 15 mm
Weight
  • 147 g
  • 204 g
Technology
  • TFT
  • TN TFT
Screen size
  • 2.8" inch
  • 4" inch
Screen resolution
  • 480 x 640 px
  • 480 x 800 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
  • 8 GB
  • 1 GB RAM
Memory card support
  • microSD (dedicated slot)
  • microSD
  • up to 64 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1530 mAh
  • Removable Li-Po
  • 2500 mAh
  • Li-Ion
Operating system OS
  • Microsoft Windows Mobile 6.1 Professional
  • Android 6.0 (Marshmallow)
Chipset Unknown
  • Mediatek MT6737M (28 nm)
NFC
  • Super AMOLED
Unknown
Headphone jack
  • panorama
  • Yes
Display
Display — specifications for DX900, Energy 400 LTE.
SpecificationDX900Energy 400 LTE
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 24.3 cm2
  • 45.5 cm2
Screen format
  • 4:3 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 37.9%
  • 47.2%
PPI /points per inch/
  • 286 PPI
  • 233 PPI
Screen protection Unknown
  • Asahi Dragontrail Glass
Camera and Video
Camera and Video — specifications for DX900, Energy 400 LTE.
SpecificationDX900Energy 400 LTE
Rear camera, main
  • 3.15 MP
  • Single
  • 8 MP
  • Single
Camera specs
  • 3.15 MP
  • AF
  • 8 MP
  • AF
Functions
  • Dual-LED flash
  • LED flash
  • HDR
Video
  • Yes
  • Yes
Front camera, selfie
  • 0.3 MP
  • Single
  • 1.3 MP
  • Single
Specifications
  • VGA videocall camera
  • 1.3 MP
Performance
Performance — specifications for DX900, Energy 400 LTE.
SpecificationDX900Energy 400 LTE
Processor CPU
  • 533 MHz Samsung S3C 6410
  • Quad-core 1.3 GHz Cortex-A53
Graphics processor GPU Unknown
  • Mali-T720MP2
General specs
General specs — specifications for DX900, Energy 400 LTE.
SpecificationDX900Energy 400 LTE
Release date
  • 2009
  • February
  • 2017
  • Q3
Colors
  • Black
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 90 EUR
  • 180 EUR
Battery life
  • Stand by time- Up to 150 h Talking time- Up to10 h
  • Stand by time- Up to 420 h (3G) Talking time- Up to 16 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for DX900, Energy 400 LTE.
SpecificationDX900Energy 400 LTE
SIM card
  • Dual SIM (Mini-SIM)
  • Hybrid Dual SIM (Micro-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 GSM 900 / 1800 / 1900 - SIM 2
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 900 / 2100 -4G - LTE band 3(1800)
  • 7(2600)
  • 20(800)
Speed
  • HSPA 7.2/0.384 Mbps
  • HSPA
  • LTE
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • SiRF Star III chipset
  • Yes
  • with A-GPS
USB
  • miniUSB
  • microUSB 2.0
Bluetooth
  • microUSB 2.0
  • A2DP
  • 4.0
  • A2DP
  • LE
Harmful irradiation Unknown
  • SAR - 0.64 W/kg (head) 1.52 W/kg (body)
Music and Audio
Music and Audio — specifications for DX900, Energy 400 LTE.
SpecificationDX900Energy 400 LTE
Radio
  • panorama
  • FM radio
Others
  • Handwriting recognition
Unknown
Other features
Other features — specifications for DX900, Energy 400 LTE.
SpecificationDX900Energy 400 LTE
Dop
  • Sensors Accelerometer Pocket Office -Voice memo -MP3 player Also known as Acer Tempo DX900
  • Acer Tempo X960
  • Sensors Accelerometer IP67 dust/water resistant (up to 1m for 30 mins)