What are the dimensions of iPhone 17?

The iPhone 17 measures 149.6×71.5×7.95mm and weighs 177g.

What are the dimensions of iPhone SE (3rd gen)?

The iPhone SE (3rd gen) measures 138.4×67.3×7.3mm and weighs 144g.

iPhone 17 vs iPhone SE (3rd gen): Size & Dimensions Compared

Q: Is iPhone 17 bigger than iPhone SE (3rd gen)?

Yes, the iPhone 17 is 11.2mm taller and 4.2mm wider than the iPhone SE (3rd gen).

Q: Are iPhone 17 and iPhone SE (3rd gen) the same size?

No, they differ by 11.2mm in height and 4.2mm in width.

The iPhone 17 is the larger phone, measuring 11.2mm taller and 4.2mm wider.

Visual Size Overlay

iPhone 17iPhone SE (3rd gen)

Height Δ

+11.2mm

Width Δ

+4.2mm

Thickness Δ

+0.7mm

Case CompatibilityWon't Fit

•Camera module layout is different — cutout won't align

Screen ProtectorNot Compatible

Edge types differ (curved vs rounded) — screen protector won't adhere properly.

Dimension	iPhone 17	iPhone SE (3rd gen)	Difference
Height	149.6mm	138.4mm	iPhone SE (3rd gen) -11.2mm (shorter)
Width	71.5mm	67.3mm	iPhone SE (3rd gen) -4.2mm (narrower)
Thickness	7.95mm	7.3mm	iPhone SE (3rd gen) -0.7mm (thinner)
Weight	177g	144g	iPhone SE (3rd gen) -33.0g (lighter)
Screen	6.3"	4.7"	iPhone SE (3rd gen) -1.6" (smaller)

Visual Size Comparison

HeightiPhone 17 +11.2mm

iPhone 17

149.6mm

iPhone SE (3rd gen)

138.4mm

WidthiPhone 17 +4.2mm

iPhone 17

71.5mm

iPhone SE (3rd gen)

67.3mm

ThicknessiPhone 17 +0.7mm

iPhone 17

7.95mm

iPhone SE (3rd gen)

7.3mm

Button & Port Layout

Which is bigger?

The iPhone 17 is the taller phone at 149.6mm (vs 138.4mm). It is also 33g 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 17 has built-in magnets for MagSafe accessories. The iPhone SE (3rd gen) needs a magnetic case or ring adapter.

Spec	iPhone 17	iPhone SE (3rd gen)
Wireless Charging	25W	7.5W
Qi Version	Qi2	Qi
MagSafe	Gen 2	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 17 to iPhone SE (3rd gen)?

Different sizes mean your old case probably won't fit. You'll need a new one.

Check case compatibility →Shop iPhone SE (3rd gen) cases →

Accessories for iPhone 17

🛡️Best iPhone 17 Cases→🔒Rugged Cases for iPhone 17→✨Clear Cases for iPhone 17→👛Wallet Cases for iPhone 17→

Accessories for iPhone SE (3rd gen)

🛡️Best iPhone SE (3rd gen) Cases→🔒Rugged Cases for iPhone SE (3rd gen)→✨Clear Cases for iPhone SE (3rd gen)→👛Wallet Cases for iPhone SE (3rd gen)→

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Will a iPhone 17 case fit iPhone SE (3rd gen)? →Will a iPhone 17 screen protector fit iPhone SE (3rd gen)? →

Frequently Asked Questions

Is iPhone 17 bigger than iPhone SE (3rd gen)?

Yes, the iPhone 17 is 11.2mm taller and 4.2mm wider. The iPhone 17 weighs 177g vs 144g.

Are iPhone 17 and iPhone SE (3rd gen) the same size?

No, the height differs by 11.2mm, width by 4.2mm, and thickness by 0.7mm.