Celkon A27 vs ZTE X990

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.

  • Screen diagonal

    X990: 2.13 in smaller diagonal

    A27:
    4.63 in
    X990:
    2.5 in
  • Release year

    A27:
    2013
    X990:
    2010

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. A27

    Height:
    Unknown
    Width:
    Unknown
    Depth:
    Unknown
    Weight:
    Unknown

    Unavailable dimensions are omitted from the drawing.

  2. 2. X990

    Height:
    107 mm
    Width:
    61 mm
    Depth:
    12 mm
    Weight:
    90 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.

  1. 1. A27

    Screen diagonal:
    4.63 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    59.1 cm²
  2. 2. X990

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

A27 has approximately 205.3% more rectangular screen area than X990.

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.

X990: Original memory entry

5 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. A27

NFC:
Unknown
Headphone jack:
Unknown
Memory card support:
See details microSD · up to 32 GB (dedicated slot)

2. X990

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details microSD · up to 8 GB (dedicated slot)

Battery capacity

Capacity is not battery life. No endurance test is implied.

At least two unambiguous positive capacity values are needed for a chart. Original entries remain in the specifications.

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. A272. X990

Everyday essentials
Everyday essentials — specifications for A27, X990.
SpecificationA27X990
Dimensions (HxWxD)
  • Х Х mm
  • 107 Х 61 Х 12 mm
Weight
  • 0 g
  • 90 g
Technology Unknown
  • TFT
Screen size
  • 4.63" inch
  • 2.5" inch
Screen resolution
  • 480 x 853 px
  • 320 x 240 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded. Unknown
  • 5 MB
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD
  • up to 8 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1800 mAh
  • Li-Ion
  • 0 mAh,
Operating system OS
  • Android 4.0 (Ice Cream Sandwich)
  • Microsoft Windows Mobile 6.5 Professional
Headphone jack Unknown
  • No
Display
Display — specifications for A27, X990.
SpecificationA27X990
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors Unknown
  • 256K
Screen area
  • 59.1 cm2
  • 19.4 cm2
Screen format
  • 16:9 (height:width)
  • 4:3 (height:width)
Screen to body ratio Unknown
  • 29.7%
PPI /points per inch/
  • 211 PPI
  • 160 PPI
Camera and Video
Camera and Video — specifications for A27, X990.
SpecificationA27X990
Rear camera, main
  • 8 MP
  • Single
  • 2 MP
  • Single
Camera specs
  • 8 MP
  • 2 MP
Video
  • Yes
  • Yes
Front camera, selfie
  • 0.3 MP
  • Single
  • 0 MP,
Performance
Performance — specifications for A27, X990.
SpecificationA27X990
Processor CPU
  • 1.0 GHz
Unknown
General specs
General specs — specifications for A27, X990.
SpecificationA27X990
Release date
  • 2013
  • February
  • 2010
  • March
Colors
  • Blue
  • Black
  • White
  • White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 130 EUR
Unknown
Battery life
  • Stand by time- Up to 180 h Talking time- Up to 6 h
  • Stand by time- Up to 480 h Talking time- Up to 8 h
Communication and Connectivity
Communication and Connectivity — specifications for A27, X990.
SpecificationA27X990
SIM card
  • Dual SIM (Mini-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
  • Class 12
  • Class 10
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • No
GPS
  • Yes
  • No
USB
  • Proprietary
  • microUSB 2.0
Bluetooth
  • Yes
  • 2.0
  • A2DP
Harmful irradiation Unknown
  • SAR EU - 0.96 W/kg (head)
Music and Audio
Music and Audio — specifications for A27, X990.
SpecificationA27X990
Radio
  • FM radio
  • Stereo FM radio
  • RDS
Other features
Other features — specifications for A27, X990.
SpecificationA27X990
Dop
  • Sensors Accelerometer
  • Windows Live Messenger -MP3/WMA/eAAC+ player -MP4/H.264 player -MS Office -Organizer -Voice memo -Predictive text input Also known as Messenger by SFR 251 Edition