iPhone 17 Pro Cases Fit iPhone 18 Pro - Or At Least Otterbox Thinks So - MacRumors

“OtterBox claims that its iPhone 17 Pro cases will also fit the newly announced iPhone 18 Pro, suggesting Apple has kept the chassis dimensions unchanged between generations. U.S. consumers could therefore avoid an immediate upgrade expense for protective accessories, and retailers may see a surge in inventory turnover as existing case stock remains relevant. The compatibility rumor is reinforced by multiple outlets, including Forbes noting identical case dimensions and 9to5Mac confirming OtterBox’s confidence. Early online listings on sites like Gizchina hint at a rapid rollout of 18 Pro‑specific cases, potentially driving early‑season sales in the U.S. accessory market. Expert Analysis: Maintaining case compatibility smooths the supply chain for U.S. accessory manufacturers and reduces waste, while giving consumers a cost‑saving incentive to adopt the new iPhone sooner. However, if Apple introduces subtle design tweaks later in the year, it could reignite a replacement cycle, creating a secondary sales boost for case makers.”