Allview Viper E vs ZTE N721

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.

• WeightN721: 17.5 g lighterN721: 105 g · Viper E: 122.5 g
• WidthN721: 8.8 mm narrowerN721: 56.2 mm · Viper E: 65 mm
• Screen diagonalN721: 1.7 in smaller diagonalN721: 2.8 in · Viper E: 4.5 in
• DepthViper E: 6.4 mm thinnerViper E: 7.8 mm · N721: 14.2 mm
• HeightN721: 25 mm shorterN721: 106 mm · Viper E: 131 mm
• Release year2014 / 2011Viper E: 2014 · N721: 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. Viper E

   Height

   131 mm+25 mm versus N721

   Width

   65 mm+8.8 mm versus N721

   Depth

   7.8 mm

   Weight

   122.5 g

2. 2. N721

   Height

   106 mm

   Width

   56.2 mm

   Depth

   14.2 mm+6.4 mm versus Viper E

   Weight

   105 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.

1. 1. Viper E 4.5 in · 16:9 About 55.8 cm² rectangular area
2. 2. N721 2.8 in · 4:3 About 24.3 cm² rectangular area

Viper E has approximately 129.9% more rectangular screen area than N721.

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.