Galaxy S21 Ultra vs Pixel 9a: Size & Dimensions Compared
The Galaxy S21 Ultra is the larger phone, measuring 10.4mm taller and 2.3mm wider.
Visual Size Overlay
- •Camera module layout is different — cutout won't align
Edge types differ (curved vs flat) — screen protector won't adhere properly.
| Dimension | Galaxy S21 Ultra | Pixel 9a | Difference |
|---|---|---|---|
| Height | 165.1mm | 154.7mm | Pixel 9a -10.4mm (shorter) |
| Width | 75.6mm | 73.3mm | Pixel 9a -2.3mm (narrower) |
| Thickness | 8.9mm | 8.9mm | Same |
| Weight | 227g | 186g | Pixel 9a -41.0g (lighter) |
| Screen | 6.8" | 6.3" | Pixel 9a -0.5" (smaller) |
Visual Size Comparison
Button & Port Layout
Which is bigger?
The Galaxy S21 Ultra is the taller phone at 165.1mm (vs 154.7mm). It is also 41g heavier.
Wireless Charging & MagSafe Compatibility
Wireless chargers work with both phones, but magnetic snap varies.
- ✓Both devices support wireless charging. Standard Qi/Qi2 chargers work with either phone.
| Spec | Galaxy S21 Ultra | Pixel 9a |
|---|---|---|
| Wireless Charging | 15W | 15W |
| Qi Version | Qi | 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.
Upgrading from Galaxy S21 Ultra to Pixel 9a?
Different sizes mean your old case probably won't fit. You'll need a new one.
Accessories for Galaxy S21 Ultra
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Frequently Asked Questions
Is Galaxy S21 Ultra bigger than Pixel 9a?
Yes, the Galaxy S21 Ultra is 10.4mm taller and 2.3mm wider. The Galaxy S21 Ultra weighs 227g vs 186g.
Are Galaxy S21 Ultra and Pixel 9a the same size?
No, the height differs by 10.4mm, width by 2.3mm, and thickness by 0.0mm.