Motorola Moto Z4 vs Motorola ROKR E2

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

  ROKR E2: 58 g lighter

  Moto Z4:

  165 g

  ROKR E2:

  107 g

• Width

  ROKR E2: 25.5 mm narrower

  Moto Z4:

  75 mm

  ROKR E2:

  49.5 mm

• Screen diagonal

  ROKR E2: 4.4 in smaller diagonal

  Moto Z4:

  6.4 in

  ROKR E2:

  2 in

• Depth

  Moto Z4: 10.6 mm thinner

  Moto Z4:

  7.4 mm

  ROKR E2:

  18 mm

• Height

  ROKR E2: 52 mm shorter

  Moto Z4:

  158 mm

  ROKR E2:

  106 mm

• Release year

  Moto Z4:

  2019

  ROKR E2:

  2006

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. Moto Z4

   Height:

   158 mm +52 mm versus ROKR E2

   Width:

   75 mm +25.5 mm versus ROKR E2

   Depth:

   7.4 mm

2. 2. ROKR E2

   Height:

   106 mm

   Width:

   49.5 mm

   Depth:

   18 mm +10.6 mm versus Moto Z4

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. Moto Z4

   Screen diagonal:

   6.4 in

   Aspect ratio (height:width):

   19.5:9

   Approximate rectangular screen area:

   100.5 cm²

2. 2. ROKR E2

   Screen diagonal:

   2 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   12.4 cm²

Moto Z4 has approximately 711.7% more rectangular screen area than ROKR E2.

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.

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.