Direct answer
Phone cases carry almost no certification burden and almost all of the category's inventory risk. A case is cut for one model, so it becomes scrap rather than surplus when that model is replaced, and the designs that sell fastest are the ones most likely to belong to someone else. The two controls that matter are a fit sample verified against a real device and documented evidence that you are entitled to sell the design.
Key takeaways
- A case fits one model, so obsolescence is total rather than gradual when the model changes.
- Tooling cost sits behind the unit price and explains most of the minimum order quantity.
- Fit cannot be inspected generically; it has to be checked against the actual handset.
- Branded and character designs need licensing evidence, and the importer carries the exposure at the border.
- Drop-protection claims are marketing unless a test standard and a report sit behind them.
Cases look like the safe entry point into accessories. Nothing is powered, no cell has to be specified, and the certification load that dominates chargers and power banks largely disappears. What replaces it is a pair of risks that arrive later and are harder to reverse: stock cut for a model nobody buys any more, and designs you were never entitled to sell.
Obsolescence here is total
Most accessories degrade in value. A case cut for a superseded model does not degrade — it stops being a product. Nothing else fits it, no discount makes it fit, and the difference between a case for the current generation and the previous one is the whole value of the unit.
Three consequences for how the category is bought:
- Timing beats price. A ten percent better unit price on a model six weeks from replacement is not a saving.
- Depth is the risk, not breadth. Carrying several models shallow is safer than carrying one deep, which inverts the usual advice about SKU discipline.
- The launch window is short and crowded. Demand for a new model’s cases is highest before tooling is widely available and collapses once every seller has stock.
Tooling explains the minimum order
A mould is cut for one model. That cost is recovered across the units of that model and no others, which is why a product costing very little per unit carries a minimum order that feels disproportionate to it.
Worth establishing before the first order:
- Who owns the mould, and whether you paid for it. If you funded tooling, say in writing that it is yours and that the design will not be run for other buyers.
- Whether the design is exclusive to you at all. Most catalogue cases are not, and paying as though they were is a common first-order mistake.
- What happens to the mould when you stop ordering, and whether it can be transferred.
The general relationship between fixed production cost and minimum quantity is covered in what is MOQ, and the negotiating position it creates in how to negotiate MOQ.
Fit has to be checked against the device
Fit is the category’s defining defect and it cannot be assessed from photographs or from a specification sheet. The failure is usually small — a camera cutout a millimetre short, buttons that need a firm press, a lip that stops a screen protector seating — and it produces returns rather than rejections, which makes it expensive in a way that does not show up until later.
The control is a physical fit sample checked against the actual handset:
- Cutouts for camera, ports and speakers, on the device rather than against a drawing
- Button response, pressed repeatedly rather than once
- Whether the case seats fully and stays seated
- Compatibility with wireless charging and with a screen protector, if you claim either
- Finish consistency across units from the same run, not just on the golden sample
Retain a sealed reference sample on both sides, as described in mobile accessories. For cases it is the only defence against a second run being cut on worn tooling.
Rights are the other half of the specification
Cases are decorated goods, and decoration is where the legal exposure sits. Three distinct problems, frequently confused:
| Problem | What is being used | Typical evidence you need |
|---|---|---|
| Counterfeit marks | Someone’s registered brand name or logo | Written authorisation from the rights holder |
| Licensed content | Characters, teams, artwork, music properties | A licence naming your territory and channel |
| Design and trade dress | The distinctive appearance of an existing product | Legal advice on the specific design |
A trademark identifies the source of goods, and registration gives the owner rights to stop others from using a confusingly similar mark on similar products — see Trademark basics. Applied to cases, that means a recognisable logo is not decoration you may copy; it is the part of the product that belongs to someone else.
Enforcement is not only a marketplace matter. Customs authorities treat counterfeit and pirated goods as a priority trade issue and detain and seize consignments at the border, and the obligation falls on the importer of record rather than on the factory that made the goods. See Intellectual Property Rights for how that enforcement is structured in the United States.
The practical rule for a first-time buyer: if a supplier offers a branded or character design and cannot produce a licence naming a territory, the design is not available to you at any price. A supplier who says it is fine because everyone sells it has told you what will happen to your consignment, not what will not.
Material and claims
The specification is short in this category, which is a reason to get it right rather than a reason to skip it:
- Material and grade, named — a soft polyurethane case and a hard polycarbonate one are different products, and hybrids differ again in how they age
- Thickness and hardness, with a tolerance
- Colour references and whether a finish is expected to yellow, which clear cases do
- Print or coating method, and its abrasion resistance if the design is printed
- Packaging and labelling, including barcodes
Protection claims deserve particular care. A drop rating repeated from a supplier’s catalogue becomes your claim once it is on your listing, and the honest version is either a named test standard with a report behind it or no number at all.
Where to go next
For the wider category and how specification drift works across accessories, see mobile accessories. For handset models and the launch cycle that sets case demand, see mobile phones. For the counterparty checks proportionate to an order of this size, see how to verify a wholesale supplier.
Frequently asked questions
Why is the minimum order quantity so high for a cheap product?
Because the mould is the real cost and the unit price is the small part. A case is cut for one model, so the tooling has to be recovered over the units of that model alone, and the supplier sets a minimum that recovers it. The mechanism is the same one that sets minimums across manufactured goods.
Can I sell cases with a brand logo on them?
Not without permission from the rights holder. A registered mark on goods you did not get permission to use is the straightforward counterfeit case, and consignments can be detained and seized at the border with the exposure falling on the importer rather than on the factory that made them.
Are drop test ratings on wholesale cases meaningful?
Only when a named test standard and an actual report sit behind them. A drop height quoted without a method, a surface, a device weight and a number of drops describes nothing, and repeating it in your own listing turns the supplier's claim into your claim.
Sources
- Intellectual Property Rights (IPR) — U.S. Customs and Border Protection
- Trademark basics — U.S. Patent and Trademark Office
