OnePlus 7T vs Samsung Galaxy M21

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.

• Chipset

  7T:

  Qualcomm SDM855 Snapdragon 855+ (7 nm)

  Galaxy M21:

  Exynos 9611 (10nm)

• Depth

  7T: 0.8 mm thinner

  7T:

  8.1 mm

  Galaxy M21:

  8.9 mm

• Release year

  7T:

  2019

  Galaxy M21:

  2020

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. 7T

   Height:

   160.9 mm

   Width:

   74.4 mm

   Depth:

   8.1 mm

2. 2. Galaxy M21

   Height:

   159 mm

   Width:

   75.1 mm

   Depth:

   8.9 mm +0.8 mm versus 7T

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. 7T

   Screen diagonal:

   6.55 in

   Aspect ratio (height:width):

   20:9

   Approximate rectangular screen area:

   103.6 cm²

2. 2. Galaxy M21

   Screen diagonal:

   6.4 in

   Aspect ratio (height:width):

   19.5:9

   Approximate rectangular screen area:

   100.5 cm²

7T has approximately 3% more rectangular screen area than Galaxy M21.

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.