Siemens SX45 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

    Redmi 4a: 198.5 g lighter

    SX45:
    330 g
    Redmi 4a:
    131.5 g
  • Width

    Redmi 4a: 16.6 mm narrower

    SX45:
    87 mm
    Redmi 4a:
    70.4 mm
  • Depth

    Redmi 4a: 17.5 mm thinner

    SX45:
    26 mm
    Redmi 4a:
    8.5 mm
  • Height

    SX45: 5.9 mm shorter

    SX45:
    134 mm
    Redmi 4a:
    139.9 mm
  • Release year

    SX45:
    2001
    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. SX45

    Height:
    134 mm
    Width:
    87 mm +16.6 mm versus Redmi 4a
    Depth:
    26 mm +17.5 mm versus Redmi 4a
  2. 2. Redmi 4a

    Height:
    139.9 mm +5.9 mm versus SX45
    Width:
    70.4 mm
    Depth:
    8.5 mm

Weight

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

  1. 1. SX45

    330 g

    +198.5 g versus Redmi 4a

  2. 2. Redmi 4a

    131.5 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. SX45

    SX45: Screen geometry unavailable or conflicting.

  2. 2. Redmi 4a

    Screen diagonal:
    5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    68.9 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 SX45, Redmi 4a, compared at the same storage capacity.
StorageSX45Redmi 4a
16 GB Unknown 2 GB RAM
32 GB Unknown 2 GB RAM
SX45: Original memory entry

32 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. SX45

NFC:
Unknown
Headphone jack:
No
Memory card support:
No

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. SX45

    1550 mAh

  2. 2. Redmi 4a

    3120 mAh

    +1570 mAh versus SX45

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. SX452. Redmi 4a

Everyday essentials
Everyday essentials — specifications for SX45, Redmi 4a.
SpecificationSX45Redmi 4a
Dimensions (HxWxD)
  • 134 Х 87 Х 26 mm
  • 139.9 Х 70.4 Х 8.5 mm
Weight
  • 330 g
  • 131.5 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 0" inch
  • 5" inch
Screen resolution
  • 240 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.
  • 32 MB
  • 16/32 GB
  • 2 GB RAM
Memory card support
  • No
  • microSD
  • up to 256 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1550 mAh
  • Removable Li-Ion
  • 3120 mAh
  • Non-removable Li-Ion
Operating system OS
  • Microsoft Windows CE 3.0 for PocketPC
  • Android 6.0.1 (Marshmallow); MIUI 10
Chipset Unknown
  • Qualcomm MSM8917 Snapdragon 425 (28 nm)
Headphone jack
  • No
  • Yes
Display
Display — specifications for SX45, Redmi 4a.
SpecificationSX45Redmi 4a
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area Unknown
  • 68.0 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio Unknown
  • 69.0%
PPI /points per inch/
  • 0 PPI
  • 296 PPI
Camera and Video
Camera and Video — specifications for SX45, Redmi 4a.
SpecificationSX45Redmi 4a
Rear camera, main
  • 0 MP,
  • 13 MP
  • Single
Camera specs Unknown
  • 13 MP
  • AF
  • f/2.2
Functions Unknown
  • LED flash
  • HDR
  • panorama
Video Unknown
  • 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 SX45, Redmi 4a.
SpecificationSX45Redmi 4a
Processor CPU
  • 64-bit NEC VR4122 150 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 SX45, Redmi 4a.
SpecificationSX45Redmi 4a
Release date
  • 2001
  • 2016
  • November
Colors Unknown
  • Gold
  • Rose Gold
  • Dark Gray
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 110 EUR
Battery life
  • Stand by time- Up to 150 h Talking time- Up to 2 h
Unknown
Body build Unknown
  • plastic body
Communication and Connectivity
Communication and Connectivity — specifications for SX45, Redmi 4a.
SpecificationSX45Redmi 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
  • No
  • Yes
Edge
  • No
  • Yes
Wi-Fi
  • No
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB Unknown
  • microUSB 2.0
Bluetooth
  • No
  • 4.1
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for SX45, Redmi 4a.
SpecificationSX45Redmi 4a
Radio
  • No
  • FM radio
Others
  • 57.6 mm x 76.8 mm -0.24 mm pixel pitch
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for SX45, Redmi 4a.
SpecificationSX45Redmi 4a
Dop
  • Infrared port - Full PocketPC functionality -Media player (MP3) - PDA + mobile phone
  • Sensors Accelerometer
  • gyro
  • proximity
  • Infrared port