Palm Centro vs Xiaomi Redmi 4a

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

    Centro: 7.5 g lighter

    Centro:
    124 g
    Redmi 4a:
    131.5 g
  • Width

    Centro: 16.9 mm narrower

    Centro:
    53.5 mm
    Redmi 4a:
    70.4 mm
  • Screen diagonal

    Centro: 2.75 in smaller diagonal

    Centro:
    2.25 in
    Redmi 4a:
    5 in
  • Depth

    Redmi 4a: 10.1 mm thinner

    Centro:
    18.6 mm
    Redmi 4a:
    8.5 mm
  • Height

    Centro: 32.7 mm shorter

    Centro:
    107.2 mm
    Redmi 4a:
    139.9 mm
  • Release year

    Centro:
    2008
    Redmi 4a:
    2016

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. Centro

    Height:
    107.2 mm
    Width:
    53.5 mm
    Depth:
    18.6 mm +10.1 mm versus Redmi 4a
  2. 2. Redmi 4a

    Height:
    139.9 mm +32.7 mm versus Centro
    Width:
    70.4 mm +16.9 mm versus Centro
    Depth:
    8.5 mm

Weight

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

  1. 1. Centro

    124 g

  2. 2. Redmi 4a

    131.5 g

    +7.5 g versus Centro

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. Centro

    Screen diagonal:
    2.25 in
    Aspect ratio (height:width):
    1:1
    Approximate rectangular screen area:
    16.3 cm²
  2. 2. Redmi 4a

    Screen diagonal:
    5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    68.9 cm²

Redmi 4a has approximately 322% more rectangular screen area than Centro.

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 Centro, Redmi 4a, compared at the same storage capacity.
StorageCentroRedmi 4a
16 GB Unknown 2 GB RAM
32 GB Unknown 2 GB RAM
Centro: Original memory entry

64 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. Centro

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details microSD · up to 4 GB (dedicated slot)

2. Redmi 4a

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (uses SIM 2 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. Centro

    1150 mAh

  2. 2. Redmi 4a

    3120 mAh

    +1970 mAh versus Centro

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. Centro2. Redmi 4a

Everyday essentials
Everyday essentials — specifications for Centro, Redmi 4a.
SpecificationCentroRedmi 4a
Dimensions (HxWxD)
  • 107.2 Х 53.5 Х 18.6 mm
  • 139.9 Х 70.4 Х 8.5 mm
Weight
  • 124 g
  • 131.5 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.25" inch
  • 5" inch
Screen resolution
  • 320 x 320 px
  • 720 x 1280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64 MB
  • 16/32 GB
  • 2 GB RAM
Memory card support
  • microSD
  • up to 4 GB (dedicated slot)
  • microSD
  • up to 256 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1150 mAh
  • Removable Li-Ion
  • 3120 mAh
  • Non-removable Li-Ion
Operating system OS
  • Palm OS 5.4.9
  • Android 6.0.1 (Marshmallow); MIUI 10
Chipset Unknown
  • Qualcomm MSM8917 Snapdragon 425 (28 nm)
Headphone jack
  • No
  • Yes
Display
Display — specifications for Centro, Redmi 4a.
SpecificationCentroRedmi 4a
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 16.3 cm2
  • 68.0 cm2
Screen format
  • 1:1 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 28.5%
  • 69.0%
PPI /points per inch/
  • 201 PPI
  • 296 PPI
Camera and Video
Camera and Video — specifications for Centro, Redmi 4a.
SpecificationCentroRedmi 4a
Rear camera, main
  • 1.3 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 1.3 MP
  • 13 MP
  • AF
  • f/2.2
Functions Unknown
  • LED flash
  • HDR
  • panorama
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0 MP,
  • 5 MP
  • Single
Specifications Unknown
  • 5 MP
  • f/2.2
Performance

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

Performance — specifications for Centro, Redmi 4a.
SpecificationCentroRedmi 4a
Processor CPU
  • 32-bit Intel XScale PXA270 312 MHz
  • Quad-core 1.4 GHz Cortex-A53
Graphics processor GPU Unknown
  • Adreno 308
Antutu 7 score * Unknown
  • 43152
GeekBench 4 Single Core * Unknown
  • 664
GeekBench 4 Multi-Core * Unknown
  • 1740
GeekBench 4 RenderScript * Unknown
  • 1350
GeekBench 5 Single Core * Unknown
  • 123
GeekBench 5 Multi-Core * Unknown
  • 396
General specs
General specs — specifications for Centro, Redmi 4a.
SpecificationCentroRedmi 4a
Release date
  • 2008
  • February
  • 2016
  • November
Colors
  • Obsidian
  • Glacier
  • Midnight
  • Cobalt
  • Onyx
  • Electric Blue
  • Rose
  • Olive
  • Gold
  • Rose Gold
  • Dark Gray
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
  • 110 EUR
Battery life
  • Stand by time- Up to 300 h Talking time- Up to 4 h
Unknown
Body build Unknown
  • plastic body
Communication and Connectivity
Communication and Connectivity — specifications for Centro, Redmi 4a.
SpecificationCentroRedmi 4a
SIM card
  • Mini-SIM
  • Hybrid Dual SIM (Nano-SIM/ Micro-SIM
  • dual stand-by)
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 20(800)
  • 38(2600)
  • 40(2300)
Speed Unknown
  • HSPA
  • LTE
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • No
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • Proprietary
  • microUSB 2.0
Bluetooth
  • 1.2
  • A2DP
  • 4.1
  • A2DP
  • LE
Harmful irradiation
  • SAR - 0.27 W/kg (head) 0.22 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for Centro, Redmi 4a.
SpecificationCentroRedmi 4a
Radio
  • No
  • FM radio
Others
  • 5-way navigation button
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Centro, Redmi 4a.
SpecificationCentroRedmi 4a
Dop
  • Infrared port - Document editor (Word
  • Excel
  • PowerPoint
  • PDF) -MP3 player -Organizer -Voice memo
  • Sensors Accelerometer
  • gyro
  • proximity
  • Infrared port