Xiaomi Mi 9 vs YU Ace

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 technologyOLED versus LCDMi 9: OLED · Ace: LCD
• WidthAce: 4.2 mm narrowerAce: 70.5 mm · Mi 9: 74.7 mm
• Screen diagonalAce: 0.94 in smaller diagonalAce: 5.45 in · Mi 9: 6.39 in
• ChipsetQualcomm SDM855 Snapdragon 855 (7 nm) / Mediatek MT6739WW (28 nm)Mi 9: Qualcomm SDM855 Snapdragon 855 (7 nm) · Ace: Mediatek MT6739WW (28 nm)
• Rear camera layoutTriple / SingleMi 9: Triple · Ace: Single
• DepthMi 9: 2 mm thinnerMi 9: 7.6 mm · Ace: 9.6 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. Mi 9

   Height

   157.5 mm+9.5 mm versus Ace

   Width

   74.7 mm+4.2 mm versus Ace

   Depth

   7.6 mm

   Weight

   173 g

2. 2. Ace

   Height

   148 mm

   Width

   70.5 mm

   Depth

   9.6 mm+2 mm versus Mi 9

   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. Mi 9 6.39 in · 19.5:9 About 100.2 cm² rectangular area
2. 2. Ace 5.45 in · 18:9 About 76.7 cm² rectangular area

Mi 9 has approximately 30.8% more rectangular screen area than Ace.

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.