Will iPhone 17 Cases Fit the iPhone 18?
In short
Only if the case is listed for both. Our supplier lists many cases as fitting both the iPhone 17 Pro and 18 Pro, or both the 17 Pro Max and 18 Pro Max, and those will fit. Don't assume any other iPhone 17 case fits an iPhone 18: buy one listed for your exact model, or bring your phone to our kiosk to check.
In this guide (5 sections)
| Your phone | Which cases fit |
|---|---|
| iPhone 18 Pro Max | Cases listed for the 18 Pro Max, including ones listed for both 17 Pro Max and 18 Pro Max |
| iPhone 18 Pro | Cases listed for the 18 Pro, including ones listed for both 17 Pro and 18 Pro |
| Pro vs Pro Max | Never swap: they're different sizes |
Do iPhone 17 Pro Max cases fit the iPhone 18 Pro Max?
The ones listed for both do. When you pick a case on our site, the model list shows every phone it's made for; if both appear, it fits both.
Cases listed for both 17 and 18 Pro models include the REDEFYNE Liquid Silicone Case, the REDEFYNE Airshield, the REDEFINE Shield Heavy Duty and the Mercury Super Protect.
Why don't all iPhone 17 cases fit the iPhone 18?
Small changes to buttons, camera layout or size stop a case fitting properly. Cases are made to tight tolerances, so we only list a model when the maker says it fits.
Which iPhone 18 Pro Max case should I get?
The same rules as for the 17: magnetic if you use MagSafe chargers or mounts, heavy-duty for drops, clear to show the colour, wallet for cards.
- Magnetic and slim: Mercury Silicone Case, REDEFYNE Metal Camera Lens Transparent MagSafe
- Heavy-duty: REDEFYNE Armor Xtreme Kevlar, Rhinos Rugged, Robot Armor belt clip
- Clear: REDEFINE Echo Wave, REDEFYNE Ice-transparent, Mercury Pearl Jelly
- Stand built in: REDEFYNE Lens Flip Stand, REDEFYNE Air Bumper Rotating Stand
- Wallet: Mercury Blue Moon Diary, Hanman 2-in-1 Detachable Wallet
- Waterproof: Redpepper Dot+ IP68
Do screen protectors carry over too?
Only if listed for both. For the 18 Pro models see the Kinglas Privacy Glass, the Kinglas Full Coverage Glass and the Kinglas Metal Ring lens protector.
Frequently asked questions
Q: How do I check which model a case fits?
Open the product and look at the phone picker: you can only choose the phones that case is made for.
Q: What if I buy the wrong model?
Bring it back unused and we'll swap it for the right model the same day.
Q: Is there a separate iPhone Duo case range?
Yes, the iPhone Duo needs its own cases. See iPhone Duo accessories.
Q: Where can I buy iPhone 18 cases in Melbourne?
Mobile Armour at Warringal Shopping Centre, Heidelberg, for click & collect or delivery across Australia.
Fit information is from our supplier's product listings. Products named were available when this guide was written; see all iPhone 18 Pro Max and iPhone 18 Pro accessories.
