iPhone 12 vs iPhone SE (3rd gen): Size & Dimensions Compared
The iPhone 12 is the larger phone, measuring 8.3mm taller and 4.2mm wider.
Visual Size Overlay
- •Camera module layout is different — cutout won't align
Screen sizes differ (6.1" vs 4.7") — protector won't fit.
| Dimension | iPhone 12 | iPhone SE (3rd gen) | Difference |
|---|---|---|---|
| Height | 146.7mm | 138.4mm | iPhone SE (3rd gen) -8.3mm (shorter) |
| Width | 71.5mm | 67.3mm | iPhone SE (3rd gen) -4.2mm (narrower) |
| Thickness | 7.4mm | 7.3mm | iPhone SE (3rd gen) -0.1mm (thinner) |
| Weight | 164g | 144g | iPhone SE (3rd gen) -20.0g (lighter) |
| Screen | 6.1" | 4.7" | iPhone SE (3rd gen) -1.4" (smaller) |
Visual Size Comparison
Button & Port Layout
Which is bigger?
The iPhone 12 is the taller phone at 146.7mm (vs 138.4mm). It is also 20g heavier.
Wireless Charging & MagSafe Compatibility
Wireless chargers work with both phones, but magnetic snap varies.
- ⚠Your MagSafe charger will charge the iPhone SE (3rd gen) via Qi, but it won't magnetically snap on.
- ✓Only the iPhone 12 has built-in magnets for MagSafe accessories. The iPhone SE (3rd gen) needs a magnetic case or ring adapter.
| Spec | iPhone 12 | iPhone SE (3rd gen) |
|---|---|---|
| Wireless Charging | 15W | 7.5W |
| Qi Version | Qi | Qi |
| MagSafe | Gen 1 | No |
| Built-in Magnets | Yes | No |
| Magnet Ring | closed circle | unknown |
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 iPhone 12 to iPhone SE (3rd gen)?
Different sizes mean your old case probably won't fit. You'll need a new one.
Accessories for iPhone 12
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Frequently Asked Questions
Is iPhone 12 bigger than iPhone SE (3rd gen)?
Yes, the iPhone 12 is 8.3mm taller and 4.2mm wider. The iPhone 12 weighs 164g vs 144g.
Are iPhone 12 and iPhone SE (3rd gen) the same size?
No, the height differs by 8.3mm, width by 4.2mm, and thickness by 0.1mm.