Microsoft Lumia 640 LTE vs Samsung i550

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

  i550: 36 g lighter

  Lumia 640 LTE:

  145 g

  i550:

  109 g

• Width

  i550: 19.2 mm narrower

  Lumia 640 LTE:

  72.2 mm

  i550:

  53 mm

• Screen diagonal

  i550: 2.4 in smaller diagonal

  Lumia 640 LTE:

  5 in

  i550:

  2.6 in

• Chipset

  Lumia 640 LTE:

  Qualcomm MSM8926 Snapdragon 400 (28 nm)

  i550:

  TI OMAP 2430

• Depth

  Lumia 640 LTE: 5 mm thinner

  Lumia 640 LTE:

  8.8 mm

  i550:

  13.8 mm

• Height

  i550: 26.3 mm shorter

  Lumia 640 LTE:

  141.3 mm

  i550:

  115 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. Lumia 640 LTE

   Height:

   141.3 mm +26.3 mm versus i550

   Width:

   72.2 mm +19.2 mm versus i550

   Depth:

   8.8 mm

2. 2. i550

   Height:

   115 mm

   Width:

   53 mm

   Depth:

   13.8 mm +5 mm versus Lumia 640 LTE

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. Lumia 640 LTE

   Screen diagonal:

   5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   68.9 cm²

2. 2. i550

   Screen diagonal:

   2.6 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   20.9 cm²

Lumia 640 LTE has approximately 229.2% more rectangular screen area than i550.

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.