Celkon A403 vs Eten M550

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

    A403: 52 g lighter

    A403:
    113 g
    M550:
    165 g
  • Width

    M550: 4 mm narrower

    A403:
    65 mm
    M550:
    61 mm
  • Screen diagonal

    M550: 1.2 in smaller diagonal

    A403:
    4 in
    M550:
    2.8 in
  • Depth

    A403: 11.8 mm thinner

    A403:
    10.2 mm
    M550:
    22 mm
  • Height

    M550: 13 mm shorter

    A403:
    125 mm
    M550:
    112 mm
  • Release year

    A403:
    2015
    M550:
    2006

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. A403

    Height:
    125 mm +13 mm versus M550
    Width:
    65 mm +4 mm versus M550
    Depth:
    10.2 mm
  2. 2. M550

    Height:
    112 mm
    Width:
    61 mm
    Depth:
    22 mm +11.8 mm versus A403

Weight

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

  1. 1. A403

    113 g

  2. 2. M550

    165 g

    +52 g versus A403

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. A403

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    45.5 cm²
  2. 2. M550

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

A403 has approximately 87.6% more rectangular screen area than M550.

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.

A403: Original memory entry

4 GB · 512 MB RAM

M550: Original memory entry

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. A403

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

2. M550

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details SD/SDIO

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. A403

    1400 mAh

  2. 2. M550

    1440 mAh

    +40 mAh versus A403

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. A4032. M550

Everyday essentials
Everyday essentials — specifications for A403, M550.
SpecificationA403M550
Dimensions (HxWxD)
  • 125 Х 65 Х 10.2 mm
  • 112 Х 61 Х 22 mm
Weight
  • 113 g
  • 165 g
Technology Unknown
  • TFT
Screen size
  • 4" inch
  • 2.8" inch
Screen resolution
  • 480 x 800 px
  • 240 x 320 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4 GB
  • 512 MB RAM
  • 64 MB RAM
  • 128 MB ROM
Memory card support
  • microSD
  • up to 32 GB
  • SD/SDIO
Battery Capacity is not battery life. No endurance test is implied.
  • 1400 mAh
  • Li-Ion
  • 1440 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.4.2 (KitKat)
  • Microsoft Windows Mobile 5.0 PocketPC
Chipset
  • Spreadtrum SC7715
Unknown
Headphone jack
  • Yes
  • No
Display
Display — specifications for A403, M550.
SpecificationA403M550
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors Unknown
  • 65K
Screen area
  • 45.5 cm2
  • 24.3 cm2
Screen format
  • 5:3 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 56.1%
  • 35.5%
PPI /points per inch/
  • 233 PPI
  • 143 PPI
Camera and Video
Camera and Video — specifications for A403, M550.
SpecificationA403M550
Rear camera, main
  • 3.15 MP
  • Single
  • 1.3 MP
  • Single
Camera specs
  • 3.15 MP
  • 1.3 MP
Functions
  • LED flash
  • LED flash
Video
  • Yes
  • Yes
Front camera, selfie
  • 1.3 MP
  • Single
  • 0 MP,
Specifications
  • 1.3 MP
Unknown
Performance
Performance — specifications for A403, M550.
SpecificationA403M550
Processor CPU
  • 1.0 GHz
  • Samsung 2440 400 MHz
General specs
General specs — specifications for A403, M550.
SpecificationA403M550
Release date
  • 2015
  • August
  • 2006
  • April
Colors
  • Black
  • Light Blue
  • Red
  • Yellow
  • White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 220 EUR
Battery life Unknown
  • Stand by time- Up to 200 h Talking time- Up to 4 h
Communication and Connectivity
Communication and Connectivity — specifications for A403, M550.
SpecificationA403M550
SIM card
  • Dual SIM
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
Unknown
Speed
  • HSPA
Unknown
GPRS
  • Yes
  • Class 10
Edge
  • Yes
  • No
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • No
GPS
  • A-GPS
  • No
USB
  • microUSB 2.0
  • Proprietary
Bluetooth
  • 2.0
  • 1.2
Harmful irradiation
  • SAR EU - 0.38 W/kg (head) 0.68 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for A403, M550.
SpecificationA403M550
Radio
  • FM radio
  • No
Others Unknown
  • Handwriting recognition
Other features
Other features — specifications for A403, M550.
SpecificationA403M550
Dop
  • Sensors Accelerometer
  • Pocket Office -eBook reader -Windows MPlayer 10 -Organizer -Voice memo