Phone accessories are the category many Vietnamese sellers start with because the 1688 price is low, the goods are light, and shipping looks cheap. The reality after platform fees, freight, and ad costs is that margin is much thinner than the back-of-envelope math suggests, and a lot of shops are selling at a per-order loss without knowing it.
Why the numbers look better than they are
The problem is not the supplier or the product. It is how landed cost gets calculated. The typical mistake: take the 1688 price, multiply by the exchange rate (around VND 3,600 per yuan, check it when you run the numbers), add a rough freight estimate, subtract from the selling price, see 40 to 50 percent left, and assume that is the margin. It is not.
Phone accessories have two traits that cause landed cost to be undercounted consistently. First, the goods are light and small, so most sellers use air freight or express routes where the carrier charges by a minimum weight or by parcel, not by actual grams. A phone case that weighs 80 grams still gets billed at a 200 to 300 gram minimum on most air routes, so the real freight cost per unit is higher than a simple weight calculation implies. Second, the category is saturated, meaning selling prices on platforms get squeezed close together, and every fee that hits you but not your estimate shrinks an already narrow spread.
Building the real landed cost for a phone case
Take a phone case priced at around 8 yuan on 1688 (roughly VND 29,000 at the rate above). That is the factory price, nothing else included.
Add each layer:
- Domestic China freight from the factory to the consolidation warehouse: usually 1 to 3 yuan per small parcel, depending on the province. Spread across individual units in a mixed shipment, budget around VND 3,000 to 8,000 per unit.
- Freight to Vietnam: air freight for small accessories typically runs around VND 80,000 to 130,000 per kilogram depending on the carrier and route. A 100-gram case billed at a 300-gram minimum costs roughly VND 25,000 to 40,000 per piece. Road or rail routes are cheaper (around VND 30,000 to 50,000 per kilogram) but transit time is roughly 15 to 25 days.
- Order-agent service fee if you go through an intermediary: usually 3 to 6 percent of order value. On an 8-yuan case, that adds roughly VND 1,000 to 2,000 per unit.
- Defects and shrinkage: phone cases run a real defect rate of about 2 to 5 percent depending on the supplier. Cracked cases, wrong colors, camera cutouts that do not align. Factor this into landed cost by dividing total batch cost by sellable units, not units ordered.
Adding it all up: a case with a 1688 price of 8 yuan, after air freight, agent fees, and shrinkage, typically lands at around VND 70,000 to 90,000 per unit. The exact figure depends on your specific route and supplier, but this range is a reasonable working estimate.
What platforms and ads take
Once landed cost is set, the next step is the fees.
Assume you list the case at VND 149,000 on TikTok Shop:
- TikTok Shop platform fee varies by program, but the combined transaction fee and affiliate commission (if you run affiliate) typically lands at around 8 to 15 percent of the selling price. At 10 percent, that is VND 14,900 per order.
- Domestic shipping to the buyer is separate from import freight. This is the cost to get the parcel from your warehouse to the customer. If the platform subsidizes part of it, you still absorb some or all of it on many orders, often VND 15,000 to 25,000 for a small item.
- Advertising: for a competitive accessories SKU, paid ad costs tend to run 20 to 35 percent of revenue if you rely on paid traffic. Organic reach or affiliate programs can bring that number down meaningfully, but the category is competitive enough that paid spend is usually required to move volume.
Working through a moderate scenario: platform fee 10 percent (VND 14,900) plus domestic shipping VND 20,000 plus ads at 20 percent of revenue (VND 29,800).
Total platform and ad cost: around VND 64,700.
With landed cost at VND 80,000 and fees plus ads at VND 64,700, total costs reach VND 144,700. Sell at VND 149,000 and you net roughly VND 4,300 per order. That is the favorable scenario. At 25 percent ad spend, the order is already underwater.
Why margin is so thin in this category
Phone accessories have almost no barrier to entry. Anyone can source them, 1688 carries hundreds of suppliers selling identical designs at nearly identical prices, and platforms like TikTok Shop and Shopee are built to surface price competition in favor of buyers. The result is a structural pressure on selling prices that rarely lets up.
The competitive loop is hard to break: cheap 1688 supply pulls in more sellers, more sellers push prices down, lower prices compress margin, thin margin forces heavier ad spend to move volume faster, heavier ad spend compresses margin further.
Higher-spec accessories require a higher 1688 price but allow a higher platform selling price with fewer direct competitors. MagSafe-compatible cases, genuine leather or carbon-fiber cases, and accessories for recently released models that have not yet been flooded by resellers tend to have noticeably better real margin than generic plastic cases.
Accessory bundles are a practical way to improve margin per order without reducing unit cost. A case paired with a screen protector and a phone mount sold as a set typically holds better margin than each item sold individually, because competitors are fewer and price comparison is harder for the buyer.
Which segments within phone accessories still work
Not all phone accessories have the same margin profile. Some segments hold up better.
- Accessories for new flagship models: when a new iPhone or Samsung flagship launches, demand spikes before supply on 1688 catches up. The seller who imports fast and lands stock early can charge a better price with fewer competitors in that window.
- Interest-driven niche cases: anime character cases, custom-print cases, cases for less mainstream devices (higher-end Xiaomi, Nothing Phone) face less price competition than generic cases, and buyers tend to compare less aggressively on price.
- Functional accessories with credibility: GaN fast chargers, power banks with accurate capacity ratings, cables with strong review histories. This segment attracts buyers who care about quality over price, and margin holds better as a result.
- Cases for mid-tier models with less competition: instead of iPhone 15 cases (everyone sells them), look at cases for popular mid-range phones in the VND 5 to 8 million bracket. Fewer shops exploit the niche, 1688 supply is still available, but competition is substantially lighter.
The calculation to run before you commit
Before you lock in any accessories batch, run through three numbers:
- Real landed cost after freight and shrinkage (not the 1688 price times the exchange rate).
- Total platform fee and domestic shipping cost (do not miss affiliate commission or any voucher subsidy the platform requires you to fund).
- Expected ad cost per order based on your own history or a realistic platform benchmark.
If those three numbers combined leave a margin above 15 to 20 percent of the selling price, the SKU is worth testing. Under 10 percent in a favorable scenario is a signal to be cautious: any small variation in freight cost, ad efficiency, or return rate can push the order into loss territory quickly.
Phone accessories are not a category to avoid. They are a category that requires more precise math than most sellers are running.
Bottom line
Real margin on 1688 phone accessories is nearly always thinner than the initial estimate. Minimum-weight freight billing, multi-layer platform fees, and ad costs together absorb most of the apparent spread between the 1688 price and the selling price. The SKUs that hold real margin in this category tend to be niche products, accessories for recently released models, or items differentiated enough to avoid a straight price race. Run the full landed-cost calculation before you commit, not after the stock lands.