Galaxy S21 Ultra vs Oppo A79: Size & Dimensions Compared
The Galaxy S21 Ultra and Oppo A79 are nearly the same size, differing by just 0.5mm in height and 0.4mm in width.
Visual Size Overlay
Galaxy S21 UltraOppo A79
Height Δ
-0.5mm
Width Δ
-0.4mm
Thickness Δ
+0.9mm
Case CompatibilityWon't Fit
- •Body dimensions are nearly identical, but the camera cutout is incompatible (vertical-quad vs vertical-dual)
Screen ProtectorNot Compatible
Edge types differ (curved vs flat) — screen protector won't adhere properly.
| Dimension | Galaxy S21 Ultra | Oppo A79 | Difference |
|---|---|---|---|
| Height | 165.1mm | 165.6mm | Oppo A79 +0.5mm (taller) |
| Width | 75.6mm | 76mm | Oppo A79 +0.4mm (wider) |
| Thickness | 8.9mm | 7.99mm | Oppo A79 -0.9mm (thinner) |
| Weight | 227g | 193g | Oppo A79 -34.0g (lighter) |
| Screen | 6.8" | 6.72" | Oppo A79 -0.1" (smaller) |
Visual Size Comparison
HeightOppo A79 +0.5mm
Galaxy S21 Ultra
165.1mm
Oppo A79
165.6mm
WidthOppo A79 +0.4mm
Galaxy S21 Ultra
75.6mm
Oppo A79
76mm
ThicknessGalaxy S21 Ultra +0.9mm
Galaxy S21 Ultra
8.9mm
Oppo A79
7.99mm
Button & Port Layout
Which is bigger?
The Galaxy S21 Ultra and Oppo A79 are essentially the same size.
Wireless Charging & MagSafe Compatibility
Only one phone supports wireless charging.
- ⚠The Oppo A79 does not support wireless charging. Only the Galaxy S21 Ultra can use a wireless charger.
| Spec | Galaxy S21 Ultra | Oppo A79 |
|---|---|---|
| Wireless Charging | 15W | No |
| Qi Version | Qi | — |
| MagSafe | No | No |
| Built-in Magnets | No | No |
MagSafe cases are NOT cross-compatible between these devices — the case body is shaped to each phone, even though the internal magnet ring may be the same.
Accessories for Galaxy S21 Ultra
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Will a Galaxy S21 Ultra case fit Oppo A79? →Will a Galaxy S21 Ultra screen protector fit Oppo A79? →
Frequently Asked Questions
Is Galaxy S21 Ultra bigger than Oppo A79?
No, the Oppo A79 is 0.5mm taller. The Galaxy S21 Ultra weighs 227g vs 193g.
Are Galaxy S21 Ultra and Oppo A79 the same size?
Very close — they differ by only 0.5mm in height and 0.4mm in width.