Samsung Galaxy Ace 3 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.

• Weight

  Galaxy Ace 3: 58 g lighter

  Galaxy Ace 3:

  115 g

  Mi 9:

  173 g

• Width

  Galaxy Ace 3: 12 mm narrower

  Galaxy Ace 3:

  62.7 mm

  Mi 9:

  74.7 mm

• Screen diagonal

  Galaxy Ace 3: 2.39 in smaller diagonal

  Galaxy Ace 3:

  4 in

  Mi 9:

  6.39 in

• Rear camera layout

  Galaxy Ace 3:

  Single

  Mi 9:

  Triple

• Depth

  Mi 9: 2.2 mm thinner

  Galaxy Ace 3:

  9.8 mm

  Mi 9:

  7.6 mm

• Height

  Galaxy Ace 3: 36.3 mm shorter

  Galaxy Ace 3:

  121.2 mm

  Mi 9:

  157.5 mm

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. Galaxy Ace 3

   Height:

   121.2 mm

   Width:

   62.7 mm

   Depth:

   9.8 mm +2.2 mm versus Mi 9

2. 2. Mi 9

   Height:

   157.5 mm +36.3 mm versus Galaxy Ace 3

   Width:

   74.7 mm +12 mm versus Galaxy Ace 3

   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. Galaxy Ace 3

   Screen diagonal:

   4 in

   Aspect ratio (height:width):

   5:3

   Approximate rectangular screen area:

   45.5 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 120.1% more rectangular screen area than Galaxy Ace 3.

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.