The KTC iPhone 18 campaign runs through 31 October 2026 and advertises combined value of up to 36 percent at participating merchants. That headline is a maximum, not a universal saving. The actual outcome depends on the store, model, transaction size, points redeemed, cashback tier and any trade-in or merchant discount. Buyers should compare the final price and financing cost rather than assuming every purchase reaches the top percentage.
Check the merchant table first
Open the current KTC campaign page and find the exact retailer before visiting. Each merchant can have different minimum spend, points requirement, cashback cap and eligible sales channel. Online and physical-store transactions may be treated differently. Save the relevant terms and ask the retailer to confirm the promotion before payment. If staff quote a different benefit, pause and verify it rather than relying on a general campaign banner.
Registration is part of the deal
KTC requires registration for selected benefits on the transaction day. Complete the stated SMS or online step using the cardholder details, then keep the confirmation. Registration after midnight or on a later date may not qualify. The purchase must usually be charged to the eligible card named in the registration. Keep the sales slip, merchant invoice and confirmation until any cashback appears on the account.
Instalment choices
Eligible KTC credit cards may receive zero-percent instalments for up to ten months, while KTC PROUD may offer terms up to 24 months. Longer does not automatically mean better. Check the actual monthly payment, whether a fee or different rate applies, and how the purchase affects available credit. A zero-percent plan can help cash flow, but only when every instalment comfortably fits the household budget.
Compare the whole purchase
Before choosing a model, add storage, case, charger, insurance and any required mobile plan. Compare trade-in values separately because a high trade-in estimate can depend on device condition. Points used for cashback have an opportunity cost, while merchant vouchers may expire or restrict later purchases. The strongest deal is the lowest suitable total cost, not the largest headline percentage.
The campaign ends on 31 October 2026. Stock and merchant allocations can change before then. Confirm the exact model, colour, warranty, return policy, registration and final charged amount before leaving the counter.