BlackBerry Key2 vs Xiaomi Mi 9

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.

• Display technology

  OLED versus LCD

  Key2:

  LCD

  Mi 9:

  OLED

• Weight

  Key2: 5 g lighter

  Key2:

  168 g

  Mi 9:

  173 g

• Width

  Key2: 2.9 mm narrower

  Key2:

  71.8 mm

  Mi 9:

  74.7 mm

• Screen diagonal

  Key2: 1.89 in smaller diagonal

  Key2:

  4.5 in

  Mi 9:

  6.39 in

• Chipset

  Key2:

  Qualcomm SDM660 Snapdragon 660 (14 nm)

  Mi 9:

  Qualcomm SDM855 Snapdragon 855 (7 nm)

• Rear camera layout

  Key2:

  Dual

  Mi 9:

  Triple

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. Key2

   Height:

   151.4 mm

   Width:

   71.8 mm

   Depth:

   8.5 mm +0.9 mm versus Mi 9

2. 2. Mi 9

   Height:

   157.5 mm +6.1 mm versus Key2

   Width:

   74.7 mm +2.9 mm versus Key2

   Depth:

   7.6 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.

1. 1. Key2

   Screen diagonal:

   4.5 in

   Aspect ratio (height:width):

   3:2

   Approximate rectangular screen area:

   60.3 cm²

2. 2. Mi 9

   Screen diagonal:

   6.39 in

   Aspect ratio (height:width):

   19.5:9

   Approximate rectangular screen area:

   100.2 cm²

Mi 9 has approximately 66.2% more rectangular screen area than Key2.

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.