i-mate JAMin vs Microsoft Lumia 640 Dual SIM

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

  Lumia 640 Dual SIM: 5 g lighter

  JAMin:

  150 g

  Lumia 640 Dual SIM:

  145 g

• Width

  JAMin: 14.2 mm narrower

  JAMin:

  58 mm

  Lumia 640 Dual SIM:

  72.2 mm

• Screen diagonal

  JAMin: 2.2 in smaller diagonal

  JAMin:

  2.8 in

  Lumia 640 Dual SIM:

  5 in

• Chipset

  JAMin:

  TI OMAP 850

  Lumia 640 Dual SIM:

  Qualcomm MSM8926 Snapdragon 400 (28 nm)

• Depth

  Lumia 640 Dual SIM: 9.4 mm thinner

  JAMin:

  18.2 mm

  Lumia 640 Dual SIM:

  8.8 mm

• Height

  JAMin: 33.3 mm shorter

  JAMin:

  108 mm

  Lumia 640 Dual SIM:

  141.3 mm

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. JAMin

   Height:

   108 mm

   Width:

   58 mm

   Depth:

   18.2 mm +9.4 mm versus Lumia 640 Dual SIM

2. 2. Lumia 640 Dual SIM

   Height:

   141.3 mm +33.3 mm versus JAMin

   Width:

   72.2 mm +14.2 mm versus JAMin

   Depth:

   8.8 mm

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. JAMin

   Screen diagonal:

   2.8 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   24.3 cm²

2. 2. Lumia 640 Dual SIM

   Screen diagonal:

   5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   68.9 cm²

Lumia 640 Dual SIM has approximately 183.9% more rectangular screen area than JAMin.

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.

Practical features

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

Battery capacity

Capacity is not battery life. No endurance test is implied.

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.