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Amoi E78 vs Karbonn A4

Compare recorded specifications, size and practical differences.

Amoi E78

Amoi E78

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Karbonn A4

Karbonn A4

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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.

  • WeightA4: 75 g lighterA4: 75 g · E78: 150 g
  • WidthE78: 5 mm narrowerE78: 61 mm · A4: 66 mm
  • Screen diagonalE78: 1.54 in smaller diagonalE78: 2.46 in · A4: 4 in
  • DepthA4: 3.2 mm thinnerA4: 9.5 mm · E78: 12.7 mm
  • HeightE78: 9.8 mm shorterE78: 115 mm · A4: 124.8 mm
  • Release year2007 / 2013E78: 2007 · A4: 2013

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.

Front
E78: 115 × 61 mm 1 A4: 124.8 × 66 mm 2
Side
E78: 115 × 12.7 mm 1 A4: 124.8 × 9.5 mm 2
  1. 1. E78
    Height
    115 mm
    Width
    61 mm
    Depth
    12.7 mm+3.2 mm versus A4
    Weight
    150 g
  2. 2. A4
    Height
    124.8 mm+9.8 mm versus E78
    Width
    66 mm+5 mm versus E78
    Depth
    9.5 mm
    Weight
    75 g
Weight

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

  1. 1. E78150 g

    +75 g versus A4

  2. 2. A475 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.

Screen size
E78: 2.46 in, 4:3, About 18.7 cm² rectangular area 1 A4: 4 in, 3:2, About 47.6 cm² rectangular area 2
  1. 1. E78 2.46 in · 4:3 About 18.7 cm² rectangular area
  2. 2. A4 4 in · 3:2 About 47.6 cm² rectangular area

A4 has approximately 154.2% more rectangular screen area than E78.

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.

E78: Original memory entry

64 MB

A4: Original memory entry

256 MB · 512 MB

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. E78

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

2. A4

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 capacity

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

  1. 1. E781100 mAh
  2. 2. A41400 mAh

    +300 mAh versus E78

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. E782. A4

Everyday essentials
Everyday essentials
SpecificationE78A4
Dimensions (HxWxD)
  • 115 Х 61 Х 12.7 mm
  • 124.8 Х 66 Х 9.5 mm
Weight
  • 150 g
  • 75 g
Technology
  • TFT
  • TFT
Screen size
  • 2.46" inch
  • 4" inch
Screen resolution
  • 240 x 320 px
  • 320 x 480 px
Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64 MB
  • 256 MB
  • 512 MB
Memory card support
  • microSD (dedicated slot)
  • microSD
  • up to 32 GB (dedicated slot)
BatteryCapacity is not battery life. No endurance test is implied.
  • 1100 mAh
  • Removable Li-Ion
  • 1400 mAh
  • Li-Ion
Operating system OS
  • Microsoft Windows Mobile 5.0 PocketPC
  • Android 2.3.6 (Gingerbread)
NFC
  • Super AMOLED
Unknown
Headphone jack
  • panorama
  • Yes
Display
Display
SpecificationE78A4
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 256K
Screen area
  • 18.7 cm2
  • 47.6 cm2
Screen format
  • 4:3 (height:width)
  • 3:2 (height:width)
Screen to body ratio
  • 26.7%
  • 57.8%
PPI /points per inch/
  • 163 PPI
  • 144 PPI
Camera and Video
Camera and Video
SpecificationE78A4
Rear camera, main
  • 2 MP
  • Single
  • 3.15 MP
  • Single
Camera specs
  • 2 MP
  • 3.15 MP
Video
  • Yes
  • Yes
Front camera, selfie
  • 0 MP,
  • 0.3 MP
  • Single
Specifications
  • Super AMOLED
Unknown
Performance
Performance
SpecificationE78A4
Processor CPU
  • Super AMOLED
Unknown
General specs
General specs
SpecificationE78A4
Release date
  • 2007
  • 2013
  • March
Colors
  • Black
  • white/black
Historical recorded priceLegacy catalogue value; date unknown. Not a current offer. Unknown
  • 70 EUR
Battery life Unknown
  • Stand by time- Up to 250 h Talking time- Up to 4 h 20 min
Communication and Connectivity
Communication and Connectivity
SpecificationE78A4
SIM card
  • Single SIM (Mini-SIM)Dual SIM (Mini-SIM/Micro-SIM
  • Dual SIM (Mini-SIM)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-3G - HSDPA 900 / 2100-4G - LTE
  • Show all network frequencies: -2G - GSM 850 / 1900 - SIM 1 & SIM 2 GSM 900 / 1800 - SIM 1 & SIM 2
Speed
  • Super AMOLED
  • HSPA
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • panorama
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • panorama
  • No
USB
  • panorama
  • Proprietary
Bluetooth
  • Quad-core 1.25 GHz Cortex-A53
  • A2DP
  • Yes
Music and Audio
Music and Audio
SpecificationE78A4
Radio
  • panorama
  • FM radio
Other features
Other features
SpecificationE78A4
Dop
  • File transfer -Organizer -Task synchronizing -Pocket Office
  • Sensors Accelerometer