LG K51S vs ZTE Speed

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

  Speed: 10.7 mm narrower

  K51S:

  76.7 mm

  Speed:

  66 mm

• Screen diagonal

  Speed: 2 in smaller diagonal

  K51S:

  6.5 in

  Speed:

  4.5 in

• Rear camera layout

  K51S:

  Quad

  Speed:

  Single

• Depth

  K51S: 2 mm thinner

  K51S:

  8.2 mm

  Speed:

  10.2 mm

• Height

  Speed: 30.6 mm shorter

  K51S:

  165.2 mm

  Speed:

  134.6 mm

• Release year

  K51S:

  2020

  Speed:

  2014

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. K51S

   Height:

   165.2 mm +30.6 mm versus Speed

   Width:

   76.7 mm +10.7 mm versus Speed

   Depth:

   8.2 mm

   Weight:

   Unknown

2. 2. Speed

   Height:

   134.6 mm

   Width:

   66 mm

   Depth:

   10.2 mm +2 mm versus K51S

   Weight:

   136.1 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.

At least two phones need compatible screen dimensions for a drawing.

1. 1. K51S

   Screen diagonal:

   6.5 in

   Aspect ratio (height:width):

   20:9

   Approximate rectangular screen area:

   102 cm²

2. 2. Speed

   Speed: Screen geometry unavailable or conflicting.

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.