BlackBerry 6720 vs ZTE Open

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

  Open: 15 mm narrower

  6720:

  77 mm

  Open:

  62 mm

• Screen diagonal

  6720: 0.5 in smaller diagonal

  6720:

  3 in

  Open:

  3.5 in

• Depth

  Open: 5.5 mm thinner

  6720:

  18 mm

  Open:

  12.5 mm

• Height

  Open: 7 mm shorter

  6720:

  121 mm

  Open:

  114 mm

• Release year

  6720:

  2003

  Open:

  2013

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. 6720

   Height:

   121 mm +7 mm versus Open

   Width:

   77 mm +15 mm versus Open

   Depth:

   18 mm +5.5 mm versus Open

   Weight:

   138 g

2. 2. Open

   Height:

   114 mm

   Width:

   62 mm

   Depth:

   12.5 mm

   Weight:

   Unknown

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. 6720

   Screen diagonal:

   3 in

   Aspect ratio (height:width):

   1:1

   Approximate rectangular screen area:

   29 cm²

2. 2. Open

   Screen diagonal:

   3.5 in

   Aspect ratio (height:width):

   3:2

   Approximate rectangular screen area:

   36.5 cm²

Open has approximately 25.6% more rectangular screen area than 6720.

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.