Adhesive in iPhone Duo cases is nothing unusual

Adhesive strips hold the thin top part of the case in place around the hinge and are easy to remove. For those who want to avoid adhesive, Apple offers the magnetic Folio for $129.

Adhesive strips in iPhone Duo cases are nothing unusual

Apple’s first foldable smartphone, the iPhone Duo, is set to go on sale on October 23, 2026. Even before its launch, users have been actively discussing the included silicone case. Many were surprised to find that it attaches to the phone with adhesive strips. However, this is a common design for accessories made for foldable smartphones.

Buyers accustomed to regular iPhones and Apple’s branded cases may find adhesive an unusual choice, especially if they are buying a foldable phone for the first time. The iPhone Duo case consists of two parts. The main piece fits over the back and covers the body, leaving the camera module exposed. The second, narrower and more compact piece wraps around the edge of the phone’s upper half—the part the user flips open to reveal the large inner display.

The top part of the accessory is very thin, especially near the hinge. It does not cover the iPhone Duo’s titanium hinge, so without adhesive, this part of the case could come loose from the smartphone.

According to Jaron Schneider, the adhesive patches are small and do not create an excessively strong bond. They are enough to keep the case in place, but the accessory is easy to remove. No stubborn residue is left on the phone afterward: any small marks come off as easily as fingerprints.

Apple’s other accessory, the Folio With Kickstand, is designed differently. It is more of a protective cover for the front and back of the smartphone, with a kickstand, than a full case: the edges of the iPhone Duo remain exposed. The Folio attaches using magnets alone and does not use adhesive. However, Schneider noted that its thickness made him remove the accessory frequently.

Spigen cases for the iPhone Duo also use adhesive strips. Some models from the brand have more of these patches on the inside and include replacement stickers. They can be swapped out, for example, if the owner regularly removes the case to clean the smartphone.

Confusion about how the case attaches was partly caused by Apple’s product description. The listing does not mention adhesive, but says that the built-in magnets “align perfectly with iPhone Duo.” This does not mean the accessory is held in place by magnets alone, but some buyers interpreted the description that way. On October 16, 2026, user Dylan (@DylanMcD8) wrote in response to a post by Parker Ortolani on social media: “Wait, it has stickers?! I thought it was magnetic.”

A table compiled by user currywarrior20 with members of the iPhone Duo owners’ community can help buyers compare the available accessories. It includes information on more than 60 cases, including models from Apple, Torras, ESR, dbrand, Benks, Spigen, Latercase, Mous, Ridge, Nomad, Speck, Casetify, and OtterBox.

The table lists features, prices, materials, whether the case uses adhesive, and whether it covers the hinge. For example, some Spigen models protect this part of the phone as well. Of the 62 accessories currently included in the table, only 12 are confirmed not to use adhesive. It is still unclear, however, how many of the listed options can already be considered practical solutions for the iPhone Duo.

The list does not include Sandmarc’s new leather case, which is compatible with the Sandmarc lens and filter system. Another resource for buyers is a video review that looks at cases for the smartphone.

Some owners are concerned that the adhesive may weaken over time if they frequently remove and reattach the accessory. This is possible, but most users do not regularly take their cases off.

The situation has already been dubbed “casegate” online. The most likely outcome, however, is simpler: most buyers will put the iPhone Duo case on, see the adhesive strips, and stop thinking about them. For those who want an option without adhesive, Apple offers the Folio With Kickstand for $129. It does not wrap around the body and is held to the smartphone by magnets. There should be no questions about how this model attaches—unless, like the members of Insane Clown Posse, the owner has trouble understanding how magnets work.

Despite the concerns about the cases, the iPhone Duo has already received positive reviews from some reviewers. The accessory images show Apple products; the photos were also taken by Jaron Schneider.