i-mate K-JAM 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: 28.5 g lighter

    K-JAM:
    160 g
    Redmi 4a:
    131.5 g
  • Width

    K-JAM: 12.4 mm narrower

    K-JAM:
    58 mm
    Redmi 4a:
    70.4 mm
  • Screen diagonal

    K-JAM: 2.2 in smaller diagonal

    K-JAM:
    2.8 in
    Redmi 4a:
    5 in
  • Chipset

    K-JAM:
    TI OMAP 850
    Redmi 4a:
    Qualcomm MSM8917 Snapdragon 425 (28 nm)
  • Depth

    Redmi 4a: 15.2 mm thinner

    K-JAM:
    23.7 mm
    Redmi 4a:
    8.5 mm
  • Height

    K-JAM: 31.9 mm shorter

    K-JAM:
    108 mm
    Redmi 4a:
    139.9 mm

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. K-JAM

    Height:
    108 mm
    Width:
    58 mm
    Depth:
    23.7 mm +15.2 mm versus Redmi 4a
  2. 2. Redmi 4a

    Height:
    139.9 mm +31.9 mm versus K-JAM
    Width:
    70.4 mm +12.4 mm versus K-JAM
    Depth:
    8.5 mm

Weight

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

  1. 1. K-JAM

    160 g

    +28.5 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.

  1. 1. K-JAM

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 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 183.9% more rectangular screen area than K-JAM.

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 K-JAM, Redmi 4a, compared at the same storage capacity.
StorageK-JAMRedmi 4a
16 GB Unknown 2 GB RAM
32 GB Unknown 2 GB RAM
K-JAM: Original memory entry

64 MB RAM · 128 MB ROM

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. K-JAM

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details miniSD · up to 2 GB

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. K-JAM

    1250 mAh

  2. 2. Redmi 4a

    3120 mAh

    +1870 mAh versus K-JAM

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. K-JAM2. Redmi 4a

Everyday essentials
Everyday essentials — specifications for K-JAM, Redmi 4a.
SpecificationK-JAMRedmi 4a
Dimensions (HxWxD)
  • 108 Х 58 Х 23.7 mm
  • 139.9 Х 70.4 Х 8.5 mm
Weight
  • 160 g
  • 131.5 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.8" 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.
  • 64 MB RAM
  • 128 MB ROM
  • 16/32 GB
  • 2 GB RAM
Memory card support
  • miniSD
  • up to 2 GB
  • microSD
  • up to 256 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1250 mAh
  • Removable Li-Po
  • 3120 mAh
  • Non-removable Li-Ion
Operating system OS
  • Microsoft Windows Mobile 5.0 PocketPC
  • Android 6.0.1 (Marshmallow); MIUI 10
Chipset
  • TI OMAP 850
  • Qualcomm MSM8917 Snapdragon 425 (28 nm)
Headphone jack
  • No
  • Yes
Display
Display — specifications for K-JAM, Redmi 4a.
SpecificationK-JAMRedmi 4a
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 24.3 cm2
  • 68.0 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 38.8%
  • 69.0%
PPI /points per inch/
  • 143 PPI
  • 296 PPI
Camera and Video
Camera and Video — specifications for K-JAM, Redmi 4a.
SpecificationK-JAMRedmi 4a
Rear camera, main
  • 1.3 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 1.3 MP
  • 13 MP
  • AF
  • f/2.2
Functions
  • LED flash
  • 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 K-JAM, Redmi 4a.
SpecificationK-JAMRedmi 4a
Processor CPU
  • 200 MHz ARM926EJ-S
  • 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 K-JAM, Redmi 4a.
SpecificationK-JAMRedmi 4a
Release date
  • 2005
  • September
  • 2016
  • November
Colors
  • Stylish black
  • Gold
  • Rose Gold
  • Dark Gray
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 280 EUR
  • 110 EUR
Battery life
  • Stand by time- Up to 200 h Talking time- Up to 5 h
Unknown
Body build Unknown
  • plastic body
Communication and Connectivity
Communication and Connectivity — specifications for K-JAM, Redmi 4a.
SpecificationK-JAMRedmi 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
  • Wi-Fi 802.11b/g
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • miniUSB
  • microUSB 2.0
Bluetooth
  • 2.0
  • 4.1
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for K-JAM, Redmi 4a.
SpecificationK-JAMRedmi 4a
Radio
  • No
  • FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for K-JAM, Redmi 4a.
SpecificationK-JAMRedmi 4a
Dop
  • Infrared port - Microsoft ActiveSync -Pocket Office -MP3/AAC player - Produced by HTC. Functionally identical to Qtek 9100
  • O2 XDA mini S
  • T-Mobile MDA Vario
  • Sensors Accelerometer
  • gyro
  • proximity
  • Infrared port