Celkon A40 vs Xiaomi Redmi 7A

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

    A40: 38.5 g lighter

    A40:
    126.5 g
    Redmi 7A:
    165 g
  • Width

    A40: 6.4 mm narrower

    A40:
    64 mm
    Redmi 7A:
    70.4 mm
  • Screen diagonal

    A40: 1.45 in smaller diagonal

    A40:
    4 in
    Redmi 7A:
    5.45 in
  • Depth

    Redmi 7A: 1.2 mm thinner

    A40:
    10.8 mm
    Redmi 7A:
    9.6 mm
  • Height

    A40: 20.1 mm shorter

    A40:
    126.2 mm
    Redmi 7A:
    146.3 mm
  • Release year

    A40:
    2014
    Redmi 7A:
    2019

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. A40

    Height:
    126.2 mm
    Width:
    64 mm
    Depth:
    10.8 mm +1.2 mm versus Redmi 7A
  2. 2. Redmi 7A

    Height:
    146.3 mm +20.1 mm versus A40
    Width:
    70.4 mm +6.4 mm versus A40
    Depth:
    9.6 mm

Weight

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

  1. 1. A40

    126.5 g

  2. 2. Redmi 7A

    165 g

    +38.5 g versus A40

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. A40

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    45.5 cm²
  2. 2. Redmi 7A

    Screen diagonal:
    5.45 in
    Aspect ratio (height:width):
    18:9
    Approximate rectangular screen area:
    76.7 cm²

Redmi 7A has approximately 68.3% more rectangular screen area than A40.

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.

A40: Original memory entry

4 GB · 512 MB RAM

Redmi 7A: Original memory entry

32 GB · 2/3 RAM 16 GB · 2 GB 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. A40

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

2. Redmi 7A

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. A40

    1500 mAh

  2. 2. Redmi 7A

    4000 mAh

    +2500 mAh versus A40

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. A402. Redmi 7A

Everyday essentials
Everyday essentials — specifications for A40, Redmi 7A.
SpecificationA40Redmi 7A
Dimensions (HxWxD)
  • 126.2 Х 64 Х 10.8 mm
  • 146.3 Х 70.4 Х 9.6 mm
Weight
  • 126.5 g
  • 165 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 4" inch
  • 5.45" inch
Screen resolution
  • 480 x 800 px
  • 720 x 1440 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4 GB
  • 512 MB RAM
  • 32 GB
  • 2/3 RAM 16 GB
  • 2 GB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD
  • up to 256 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1500 mAh
  • Li-Ion
  • 4000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 4.2.2 (Jelly Bean)
  • Android 9.0 (Pie); MIUI 10.2.7
Chipset Unknown
  • Qualcomm SDM439 Snapdragon 439 (12 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A40, Redmi 7A.
SpecificationA40Redmi 7A
Touchscreen
  • touchscreen
  • capacitive touchscreen
Display colors Unknown
  • 16M
Screen area
  • 45.5 cm2
  • 76.7 cm2
Screen format
  • 5:3 (height:width)
  • 18:9 (height:width)
Screen to body ratio
  • 56.4%
  • 74.4%
PPI /points per inch/
  • 233 PPI
  • 295 PPI
Camera and Video
Camera and Video — specifications for A40, Redmi 7A.
SpecificationA40Redmi 7A
Rear camera, main
  • 5 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 5 MP
  • 13 MP
  • f/2.2
  • 1.12µm
  • PDAF - China -12 MP
  • 1/2.9''
  • 1.25µm
  • PDAF - India
Functions Unknown
  • LED flash
  • HDR
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 5 MP
  • Single
Specifications
  • VGA
  • 13 MP
  • f/2.2
  • 1.12µm
  • PDAF - China
Performance

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

Performance — specifications for A40, Redmi 7A.
SpecificationA40Redmi 7A
Processor CPU
  • Dual-core 1.3 GHz
  • Octa-core (2x2.0 GHz Cortex-A53 & 6x1.45 GHz Cortex A53)
Graphics processor GPU Unknown
  • Adreno 505
Antutu 8 score * Unknown
  • 90664
General specs
General specs — specifications for A40, Redmi 7A.
SpecificationA40Redmi 7A
Release date
  • 2014
  • January
  • 2019
  • May
Colors
  • White
  • Yellow
  • Blue
  • Matte Black
  • Morning blue
  • Matte Blue
  • Matte Gold
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 100 EUR
Communication and Connectivity
Communication and Connectivity — specifications for A40, Redmi 7A.
SpecificationA40Redmi 7A
SIM card
  • Dual SIM
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE (unspecified)
Speed Unknown
  • HSPA
  • LTE-A
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 2.0
  • 4.2
  • A2DP
  • LE
Harmful irradiation Unknown
  • SAR - 0.74 W/kg (head) 0.79 W/kg (body)
Music and Audio
Music and Audio — specifications for A40, Redmi 7A.
SpecificationA40Redmi 7A
Radio
  • FM radio
  • FM radio
  • built-in antenna
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for A40, Redmi 7A.
SpecificationA40Redmi 7A
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Accelerometer
  • proximity
  • compass - Fast battery charging 10W - China only - Splash resistant - For India and China