Celkon Campus Prime vs Nokia Lumia 638

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

    Campus Prime: 16.8 g lighter

    Campus Prime:
    119.2 g
    Lumia 638:
    136 g
  • Chipset

    Campus Prime:
    Spreadtrum SC7715
    Lumia 638:
    Qualcomm Snapdragon 400 (28 nm)
  • Height

    Lumia 638: 2.5 mm shorter

    Campus Prime:
    132 mm
    Lumia 638:
    129.5 mm
  • Release year

    Campus Prime:
    2015
    Lumia 638:
    2014

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. Campus Prime

    Height:
    132 mm +2.5 mm versus Lumia 638
    Width:
    67 mm
    Depth:
    9.3 mm
  2. 2. Lumia 638

    Height:
    129.5 mm
    Width:
    66.7 mm
    Depth:
    9.2 mm

Weight

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

  1. 1. Campus Prime

    119.2 g

  2. 2. Lumia 638

    136 g

    +16.8 g versus Campus Prime

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. Campus Prime

    Screen diagonal:
    4.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    55.8 cm²
  2. 2. Lumia 638

    Screen diagonal:
    4.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    55.8 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.

Recorded RAM for Campus Prime, Lumia 638, compared at the same storage capacity.
StorageCampus PrimeLumia 638
8 GB Unknown 1 GB RAM
Campus Prime: Original memory entry

4 GB · 512 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. Campus Prime

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

2. Lumia 638

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 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. Campus Prime

    1600 mAh

  2. 2. Lumia 638

    1830 mAh

    +230 mAh versus Campus Prime

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. Campus Prime2. Lumia 638

Everyday essentials
Everyday essentials — specifications for Campus Prime, Lumia 638.
SpecificationCampus PrimeLumia 638
Dimensions (HxWxD)
  • 132 Х 67 Х 9.3 mm
  • 129.5 Х 66.7 Х 9.2 mm
Weight
  • 119.2 g
  • 136 g
Technology Unknown
  • IPS LCD
Screen size
  • 4.5" inch
  • 4.5" inch
Screen resolution
  • 480 x 854 px
  • 480 x 854 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4 GB
  • 512 MB RAM
  • 8 GB
  • 1 GB RAM
Memory card support
  • microSD
  • up to 32 GB
  • microSD
  • up to 256 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1600 mAh
  • Removable Li-Ion
  • 1830 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.4.2 (KitKat)
  • Microsoft Windows Phone 8.1
Chipset
  • Spreadtrum SC7715
  • Qualcomm Snapdragon 400 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Campus Prime, Lumia 638.
SpecificationCampus PrimeLumia 638
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors Unknown
  • 16M
Screen area
  • 55.8 cm2
  • 55.8 cm2
Screen format
  • 16:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 63.1%
  • 64.6%
PPI /points per inch/
  • 218 PPI
  • 218 PPI
Screen protection Unknown
  • Corning Gorilla Glass 3
Camera and Video
Camera and Video — specifications for Campus Prime, Lumia 638.
SpecificationCampus PrimeLumia 638
Rear camera, main
  • 3.15 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 3.15 MP
  • 5 MP
  • 1/4''
  • AF
Functions
  • LED flash
  • panorama
Video
  • Yes
  • Yes
Front camera, selfie
  • 1.3 MP
  • Single
  • 0 MP,
Specifications
  • 1.3 MP
Unknown
Performance
Performance — specifications for Campus Prime, Lumia 638.
SpecificationCampus PrimeLumia 638
Processor CPU
  • 1.0 GHz
  • Quad-core 1.2 GHz Cortex-A7
Graphics processor GPU Unknown
  • Adreno 305
General specs
General specs — specifications for Campus Prime, Lumia 638.
SpecificationCampus PrimeLumia 638
Release date
  • 2015
  • August
  • 2014
  • December
Colors
  • White
  • Black
  • Gold
  • Silver
  • Brown
  • Blue
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 100 EUR
Communication and Connectivity
Communication and Connectivity — specifications for Campus Prime, Lumia 638.
SpecificationCampus PrimeLumia 638
SIM card
  • Dual SIM
  • Micro-SIM
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA 850 / 900 / 1900 / 2100 - RM-1010 -4G - LTE band 3(1800)
  • 7(2600)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11 b/g/n
  • DLNA
  • hotspot
GPS
  • A-GPS
  • Yes
  • with A-GPS
  • GLONASS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 2.0
  • 4.0
  • A2DP
  • LE/ aptX after WP8 Denim update
Harmful irradiation
  • SAR EU - 0.35 W/kg (head) 0.85 W/kg (body)
  • SAR EU - 1.46 W/kg (head) 0.95 W/kg (body)
Music and Audio
Music and Audio — specifications for Campus Prime, Lumia 638.
SpecificationCampus PrimeLumia 638
Radio
  • FM radio
  • FM radio
Others Unknown
  • ClearBlack display
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Campus Prime, Lumia 638.
SpecificationCampus PrimeLumia 638
Dop
  • Sensors Accelerometer
  • Sensors Accelerometer