Archos 50b Cobalt vs Celkon A355

Compare recorded specifications, size and practical differences.

+ Add a third phone

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

    A355: 62.5 g lighter

    50b Cobalt:
    160 g
    A355:
    97.5 g
  • Screen diagonal

    A355: 2 in smaller diagonal

    50b Cobalt:
    5.5 in
    A355:
    3.5 in
  • Chipset

    50b Cobalt:
    Qualcomm MSM8909 Snapdragon 210 (28 nm)
    A355:
    Spreadtrum 7715
  • Release year

    50b Cobalt:
    2017
    A355:
    2015

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. 50b Cobalt

    Height:
    Unknown
    Width:
    Unknown
    Depth:
    Unknown

    Unavailable dimensions are omitted from the drawing.

  2. 2. A355

    Height:
    115.3 mm
    Width:
    63.3 mm
    Depth:
    10.2 mm

Weight

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

  1. 1. 50b Cobalt

    160 g

    +62.5 g versus A355

  2. 2. A355

    97.5 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.

At least two phones need compatible screen dimensions for a drawing.

  1. 1. 50b Cobalt

    50b Cobalt: Screen geometry unavailable or conflicting.

  2. 2. A355

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

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.

50b Cobalt: Original memory entry

16/32 GB · 1/2 GB RAM

A355: Original memory entry

512 MB · 256 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. 50b Cobalt

NFC:
See details Super AMOLED
Headphone jack:
Yes
Memory card support:
See details microSD · up to 64 GB (dedicated slot)

2. A355

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

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. 50b Cobalt

    2100 mAh

    +900 mAh versus A355

  2. 2. A355

    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. 50b Cobalt2. A355

Everyday essentials
Everyday essentials — specifications for 50b Cobalt, A355.
Specification50b CobaltA355
Dimensions (HxWxD)
  • 144 Х 72 Х 0 mm
  • 115.3 Х 63.3 Х 10.2 mm
Weight
  • 160 g
  • 97.5 g
Technology
  • IPS LCD
Unknown
Screen size
  • 5.5" inch
  • 3.5" inch
Screen resolution
  • 720 x 1280 px
  • 320 x 480 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16/32 GB
  • 1/2 GB RAM
  • 512 MB
  • 256 MB RAM
Memory card support
  • microSD
  • up to 64 GB (dedicated slot)
  • microSD
  • up to 32 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 2100 mAh
  • Removable Li-Ion
  • 1200 mAh
  • Li-Ion
Operating system OS
  • Android 6.0 (Marshmallow)
  • Android 4.4.2 (KitKat)
Chipset
  • Qualcomm MSM8909 Snapdragon 210 (28 nm)
  • Spreadtrum 7715
NFC
  • Super AMOLED
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for 50b Cobalt, A355.
Specification50b CobaltA355
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
Unknown
Screen area
  • 68.9 cm2
  • 36.5 cm2
Screen format
  • 16:9 (height:width)
  • 3:2 (height:width)
Screen to body ratio
  • 136 Х 66.5 Х 9.6 mm
  • 50.0%
PPI /points per inch/
  • 294 PPI
  • 165 PPI
Camera and Video
Camera and Video — specifications for 50b Cobalt, A355.
Specification50b CobaltA355
Rear camera, main
  • 13 MP
  • Single
  • 2 MP
  • Single
Camera specs
  • 13 MP
  • AF
  • 2 MP
Functions
  • Dual-LED flash
  • HDR
  • panorama
  • Dual-LED flash
Video
  • 720p@30fps
  • Yes
Front camera, selfie
  • 2 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • 2 MP
  • VGA
Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for 50b Cobalt, A355.
Specification50b CobaltA355
Processor CPU
  • Quad-core 1.1 GHz Cortex-A7
  • 1.0 GHz
Graphics processor GPU
  • Adreno 304
  • Mali-400
Antutu 7 score *
  • 17582
Unknown
General specs
General specs — specifications for 50b Cobalt, A355.
Specification50b CobaltA355
Release date
  • 2017
  • January
  • 2015
  • May
Colors
  • Gray
  • Light Blue
  • Dart Blue
  • Red
  • Yellow
  • White
Communication and Connectivity
Communication and Connectivity — specifications for 50b Cobalt, A355.
Specification50b CobaltA355
SIM card
  • Single SIM (Mini-SIM)Dual SIM (Mini-SIM/Micro-SIM
  • dual stand-by)
  • Dual SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-3G - HSDPA 900 / 2100-4G - LTE 800 / 1800 / 2100 / 2600
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
Speed
  • HSPA 42.2/11.5 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 b/g/n
GPS
  • Yes
  • with A-GPS
  • Yes
USB
  • microUSB 2.0
  • microUSB
Bluetooth
  • 4.0
  • A2DP
  • 2.0
Harmful irradiation
  • SAR EU - 0.35 W/kg (head) 1.62 W/kg (body)
  • SAR EU - 0.49 W/kg (head) 0.84 W/kg (body)
Music and Audio
Music and Audio — specifications for 50b Cobalt, A355.
Specification50b CobaltA355
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for 50b Cobalt, A355.
Specification50b CobaltA355
Dop
  • Sensors Fingerprint (rear-mounted)
  • Sensors Accelerometer
  • proximity
  • Sensors Accelerometer