Amoi E78 vs ZTE V821

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

  V821: 30 g lighter

  E78:

  150 g

  V821:

  120 g

• Width

  V821: 4.5 mm narrower

  E78:

  61 mm

  V821:

  56.5 mm

• Depth

  V821: 0.9 mm thinner

  E78:

  12.7 mm

  V821:

  11.8 mm

• Release year

  E78:

  2007

  V821:

  2011

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. E78

   Height:

   115 mm

   Width:

   61 mm +4.5 mm versus V821

   Depth:

   12.7 mm +0.9 mm versus V821

2. 2. V821

   Height:

   116 mm

   Width:

   56.5 mm

   Depth:

   11.8 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.

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

1. 1. E78

   Screen diagonal:

   2.46 in

   Aspect ratio (height:width):

   4:3

   Approximate rectangular screen area:

   18.7 cm²

2. 2. V821

   V821: 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.

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.

At least two unambiguous positive capacity values are needed for a chart. Original entries remain in the specifications.

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.