Lava Fuel F1 vs Samsung i637 Jack

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

  i637 Jack: 45.9 g lighter

  Fuel F1:

  148 g

  i637 Jack:

  102.1 g

• Width

  i637 Jack: 11 mm narrower

  Fuel F1:

  72 mm

  i637 Jack:

  61 mm

• Screen diagonal

  i637 Jack: 2.6 in smaller diagonal

  Fuel F1:

  5 in

  i637 Jack:

  2.4 in

• Depth

  Fuel F1: 3.2 mm thinner

  Fuel F1:

  9.5 mm

  i637 Jack:

  12.7 mm

• Height

  i637 Jack: 24 mm shorter

  Fuel F1:

  141 mm

  i637 Jack:

  117 mm

• Release year

  Fuel F1:

  2015

  i637 Jack:

  2009

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. Fuel F1

   Height:

   141 mm +24 mm versus i637 Jack

   Width:

   72 mm +11 mm versus i637 Jack

   Depth:

   9.5 mm

2. 2. i637 Jack

   Height:

   117 mm

   Width:

   61 mm

   Depth:

   12.7 mm +3.2 mm versus Fuel F1

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. Fuel F1

   Screen diagonal:

   5 in

   Aspect ratio (height:width):

   16:9

   Approximate rectangular screen area:

   68.9 cm²

2. 2. i637 Jack

   Screen diagonal:

   2.4 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   17.8 cm²

Fuel F1 has approximately 286.4% more rectangular screen area than i637 Jack.

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.