i-mate K-JAM vs Lava A51

Compare recorded specifications, size and practical differences.

+ Add a third phone

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.

  • Width

    K-JAM: 8 mm narrower

    K-JAM:
    58 mm
    A51:
    66 mm
  • Screen diagonal

    K-JAM: 1.7 in smaller diagonal

    K-JAM:
    2.8 in
    A51:
    4.5 in
  • Chipset

    K-JAM:
    TI OMAP 850
    A51:
    Spreadtrum SC7731C
  • Depth

    A51: 13.8 mm thinner

    K-JAM:
    23.7 mm
    A51:
    9.9 mm
  • Height

    K-JAM: 28 mm shorter

    K-JAM:
    108 mm
    A51:
    136 mm
  • Release year

    K-JAM:
    2005
    A51:
    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. K-JAM

    Height:
    108 mm
    Width:
    58 mm
    Depth:
    23.7 mm +13.8 mm versus A51
    Weight:
    160 g
  2. 2. A51

    Height:
    136 mm +28 mm versus K-JAM
    Width:
    66 mm +8 mm versus K-JAM
    Depth:
    9.9 mm
    Weight:
    Unknown

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. A51

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

A51 has approximately 129.9% 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.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

K-JAM: Original memory entry

64 MB RAM · 128 MB ROM

A51: Original memory entry

8 GB · 512 MB 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. K-JAM

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

2. A51

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

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. A51

    1750 mAh

    +500 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. A51

Everyday essentials
Everyday essentials — specifications for K-JAM, A51.
SpecificationK-JAMA51
Dimensions (HxWxD)
  • 108 Х 58 Х 23.7 mm
  • 136 Х 66 Х 9.9 mm
Weight
  • 160 g
  • 0 g
Technology
  • TFT
  • TFT
Screen size
  • 2.8" inch
  • 4.5" inch
Screen resolution
  • 240 x 320 px
  • 480 x 854 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
  • 8 GB
  • 512 MB RAM
Memory card support
  • miniSD
  • up to 2 GB
  • microSD
  • up to 32 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 1250 mAh
  • Removable Li-Po
  • 1750 mAh
  • Removable Li-Ion
Operating system OS
  • Microsoft Windows Mobile 5.0 PocketPC
  • Android 6.0 (Marshmallow)
Chipset
  • TI OMAP 850
  • Spreadtrum SC7731C
Headphone jack
  • No
  • Yes
Display
Display — specifications for K-JAM, A51.
SpecificationK-JAMA51
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 24.3 cm2
  • 55.8 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 38.8%
  • 62.2%
PPI /points per inch/
  • 143 PPI
  • 218 PPI
Camera and Video
Camera and Video — specifications for K-JAM, A51.
SpecificationK-JAMA51
Rear camera, main
  • 1.3 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 1.3 MP
  • 5 MP
Functions
  • LED flash
  • LED flash
  • panorama
Video
  • Yes
  • Yes
Front camera, selfie
  • 0 MP,
  • 0.3 MP
  • Single
Specifications Unknown
  • VGA
Performance
Performance — specifications for K-JAM, A51.
SpecificationK-JAMA51
Processor CPU
  • 200 MHz ARM926EJ-S
  • Quad-core 1.2 GHz
General specs
General specs — specifications for K-JAM, A51.
SpecificationK-JAMA51
Release date
  • 2005
  • September
  • 2016
  • October
Colors
  • Stylish black
  • Gray
  • Black
  • Gold
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 280 EUR
Unknown
Battery life
  • Stand by time- Up to 200 h Talking time- Up to 5 h
  • Stand by time- Up to 420 h (3G) Talking time- Up to 10 h 30 min (3G)
Communication and Connectivity
Communication and Connectivity — specifications for K-JAM, A51.
SpecificationK-JAMA51
SIM card
  • Mini-SIM
  • Dual SIM
Network Unknown
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
Speed Unknown
  • HSPA
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11b/g
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
USB
  • miniUSB
  • microUSB 2.0
Bluetooth
  • 2.0
  • 2.1
  • EDR
Music and Audio
Music and Audio — specifications for K-JAM, A51.
SpecificationK-JAMA51
Radio
  • No
  • FM radio
Other features
Other features — specifications for K-JAM, A51.
SpecificationK-JAMA51
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 For India