Do iPhone Duo cases fit every iPhone Duo model number?

Yes. Every model number of the iPhone Duo has the same body, so cases and screen protectors made for the iPhone Duo fit all of them. What differs between versions is mostly the SIM, 5G bands and region.

A3720 is the iPhone Duo

Q: What phone is A3720?

A3720 is the iPhone Duo. Apple lists this version for: Australia and most other countries.

Apple lists this version for: Australia and most other countries. This is the model number sold in Australia.

For your iPhone Duo

Ask us about this phone

Not sure what’s wrong with it? Diagnostics at Riverwood Plaza are free.

Software updates

Gets iOS 27

Yes. The iPhone Duo runs iOS 27, Apple’s current version.

Other iPhone Duo model numbers

A3447 — United States, Puerto Rico
A3719 — Bahrain, Canada, Guam, Japan, Kuwait, Mexico, Oman, Qatar, Saudi Arabia, United Arab Emirates and US Virgin Islands
A3721 — China mainland

Check it yourself

Where to find the model number.

Settings → General → About, then tap the Model Number line once to switch from the part number to the A number. Got a different number? Look it up here.

More free tools

Repair or replace? →Which phone do I have? →Will my case fit? →Can my power bank fly? →

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